All Wiring Diagrams for Pontiac Grand Prix SE 1999

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 2) for Pontiac Grand Prix SE 1999

List of elements for Automatic A/C Wiring Diagram (1 of 2) for Pontiac Grand Prix SE 1999:

(i/p harn, 34 cm from heater-a/c control breakout)
(i/p harn, 4 cm from i/p compt lamp switch breakout)
(i/p harness, 4 cm from dlc breakout)
+5 v
A/c module)
A/c request
A/c sol ctrl
A/c solenoid
Ambient outside temperature sensor (behind front panel, mounted to radiator air baffle)
Battery
Bi-lev sol ctrl
Bi-level solenoid
Blower motor
Blower motor resistor (in right side of heater- a/c module)
C 1995 vftc
C10
C11
C12
C13
C14
C15
C16
Cntrl in
D10
D11
D12
D13
D14
D15
D16
Data link connector (under left side of dash, right of steering column)
Def sol ctrl
Defrost solenoid
English/metric
Fuse block
G200 (right side of dash)
Grd
Ground
Heater solenoid
Heater-a/c control
Hot at all times
Hot in run
Htr sol ctrl
Hvac fuse 10a
Hvac hi fuse 30a
Ignition
Inside air temperature sensor (right side of instrument cluster)
Inside temp input
Left electric actuator (left side of heater- a/c module)
Lt elec actuator
Motor drive
Nca
Outside temp input
Recirc sol ctrl
Recirc solenoid
Red
Right electric actuator (right side of heater-
Rt elec actuator
S211 (i/p harn 11 cm from dlc)
S213 (i/p harn, 4 cm from blower control module breakout)
S237 (i/p harn, 30 cm from dlc breakout)
S245
S258
Sensor ground
Serial data
Solid state
Spd cntrl
Sun load input
Sun load temperature sensor (top center of dash)
Tan
Vacuum/ electric solenoid (on right side of heater-a/c module)
Volt to blw ctrl

Automatic A/C Wiring Diagram (2 of 2) for Pontiac Grand Prix SE 1999

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List of elements for Automatic A/C Wiring Diagram (2 of 2) for Pontiac Grand Prix SE 1999:

(engine harn, 4 cm from engine coolant fan wiring harn breakout)
(i/p harn, 17 cm from dlc breakout)
A/c clu diode
A/c clu fuse 10a
A/c clu relay
A/c compressor clutch coil
A/c request
A10
C 1995 vftc
C10
C11
Comp ctrl
Cool fan 1 maxi fuse 30a
Cool fan 1 relay
Cool fan 2 maxi fuse 30a
Cool fan 2 relay
Cool fan 3 relay
Engine coolant fan motor 1 (lh - 3.1l) (rh - 3.8l)
Engine coolant fan motor 2 (rh - 3.1l) (lh - 3.8l)
F11
G117 (left front of engine)
Hi spd ctrl
Hot at all times
Hot in on or run
Low spd ctrl
Powertrain control module (left front side of engine compt, in air cleaner assembly)
Radio batt fuse 10a
S105
S105 (engine harn, 4 cm from engine coolant fan wiring harn breakout)
S202
Serial data
Tan
Underhood electrical center

Compressor Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Compressor Wiring Diagram for Pontiac Grand Prix SE 1999:

(manual a/c) c1
A/c clu diode
A/c clu fuse 10a
A/c clu relay
A/c compressor clutch coil
A/c compressor relay control
A/c reqest
A/c request
C11
C2 (auto a/c)
C2 (manual a/c)
D14
Fuse block
G117 (left front of engine)
Harness breakout)
Heater- a/c control
Hot in run
Hot in run or start
Hvac fuse 10a
Ignition
Powertrain control module (left front side of eng compt, in air cleaner assembly)
S206 (i/p harn, 4 cm from data link connector breakout)
Signal
Underhood electrical center

Manual A/C Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Manual A/C Wiring Diagram for Pontiac Grand Prix SE 1999:

(i/p harn, 4 cm from dlc breakout)
A/c compressor clutch
A/c clu diode
A/c clu fuse 10a
A/c clu relay
A/c request sig
A/c sol cntrl
A/c solenoid
A10
Bi-level
Bi-level solenoid
Bi-lvl sol cntrl
Blend
Blower motor
Blower motor relay
Blower motor resistor
Blower sw off
C10
C11
Clutch req
Comp ctrl
Cool fan 1 maxi fuse 40a
Cool fan 1 relay
Cool fan 2 maxi fuse 30a
Cool fan 2 relay
Cool fan 3 relay
Def
Defrost sol cntrl
Defrost solenoid
Dic/ hvac fuse 10a
Engine coolant fan motor 1
Engine coolant fan motor 2
F11
Fuse block
G117 (left front of engine)
G200 (right side of dash)
G200 (right side of dash) a
Ground
Heat
Heater solenoid
Heater-a/c control
Hi spd ctrl
Hot at all times
Hot in on or start
Hot in run
Htr solenoid
Hvac ctrl fuse 20a
Hvac hi fuse 30a
Ignition
Left electronic actuator (left side of heater- a/c module)
Left temp act
Low spd ctrl
Max
Nca
Off
Powertrain control module (in air cleaner assy)
Radio batt fuse 10a
Recirc sol cntrl
Recirc solenoid
Red
S105
S105 (engine harn, 4 cm from engine coolant fan wiring harn breakout)
S206
S230 (i/p harn, 4 cm from radio breakout)
Tan
Underhood electrical center
Vacuum/ electric solenoid (on right side of heater-a/c module)
Vent

ANTI-LOCK BRAKES

Anti-lock Brake Wiring Diagrams for Pontiac Grand Prix SE 1999

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List of elements for Anti-lock Brake Wiring Diagrams for Pontiac Grand Prix SE 1999:

(base of steering column) g202
(engine harn, 4 cm from ebtcm breakout)
(on brake pedal bracket)
A/c clu/ abs ign fuse 10a
Abs ind
Anti-lock wanring ind
B c1
Battery
Brake pressure modulator valve
C 1995 vftc
Check tire press ind
Connector (right of steering column)
Data link
Driver information display
Electronic brake & traction control module (left side of engine compt)
Electronic power steering system
Fuse block
G102 (left front strut tower)
Ground
Hot at all times
Hot in run, bulb test or start
Ignition
Ind ctrl
Instrument cluster
Ip-ign fuse 10a
Left front wheel speed sensor
Left rear wheel speed sensor
Lf whl spd
Lo trac ind
Low tire pres
Low trac ind
Lr whl spd
Msva high
Msva low
Nca
Pnk
Powertrain control module (left front of engine compt)
Pump motor
Pump mtr ctrl
Red
Req tps sig
Rf whl spd
Right front wheel speed sensor
Right rear wheel speed sensor
Rr whl spd
S131
S205 (i/p harn, below dash)
S209
Serial data
Stop lamp fuse 15a
Stop lamp switch
Stop lp feed
Tach out c2
Tach signal
Tan
Tcs ind
Tcs signal
Torque del c2
Torque req c1
Trac ctrl
Trac off ind
Trac switch
Trip calculator
Underhood accessory wiring junction block
W/ driver information display
W/ trip calculator

ANTI-THEFT

Anti-theft Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Anti-theft Wiring Diagram for Pontiac Grand Prix SE 1999:

(i/p harn, behind right side of instrument cluster)
(inside left door sill, forward of left front seat)
(right front door sill)
(right side of dash cross beam, behind fuse block)
Accy 1
Battery
Body control module (behind left side of dash)
C13
D10
D11
D13
D14
D15
D16
Door locks system
Driver dr ajar in
Ext lights out
Fuel enable input
Fuel enable sig
Fuse block
G201
G309
G316
Grd
Ground
Headlamp circuit breaker 20a
Headlights system
Horn relay out
Horns system
Hot at all times
Hot in accy or run
Hot in run, bulb test or start
I/p-ign fuse 10a
Ign 1
Instrument cluster system (driver information center)
Int lamp fuse 10a
Interior lights system (rear compartment courtesy light)
Left front door ajar switch
Left front door lock switch
Left key cylinder lock switch
Left rear door ajar switch
Lock
Lock sw input
Mall fuse 10a
Mall pgm fuse 10a
Nca
Pass dr ajar in
Pnk
Powertrain control module (in air cleaner assembly)
Program
Radio batt fuse 20a
Rear compart- ment lid ajar switch
Rear compartment courtesy light switch (on rear compartment lid)
Rfa cmdi
Right front door ajar switch
Right front door lock switch
Right key cylinder lock switch
Right rear door ajar switch
S202
S209
S265
S273
S285
S303
S309 (body harn, below right side of front passenger's seat)
S406
S416
S428 (body harn, below rear window panel)
S504
S604
Security led
Tamper input
Tamper sig out
Tan
Theft deterrent indicator light
Theft deterrent relay (behind left side of dash)
Theft deterrent shock sensor (on right side of knee bolster bracket)
Trunk ajar sw
Un- lock
Underhood accessory wiring junction block (right strut tower)
Unlock sw input

BODY COMPUTER

Body Computer Wiring Diagrams for Pontiac Grand Prix SE 1999

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List of elements for Body Computer Wiring Diagrams for Pontiac Grand Prix SE 1999:

(1998-99)
Accessory 1
Accessory time delay relay (behind glove box, mounted to underside of cross car beam)
Anti-theft system
Aux chime
Battery courtesy
Battery door locks
Body control module (bcm) (below left side of dash, left of steering column)
C10
C11
C12
C13
C14
C15
C16
Courtesy lamps control
D10
D11
D12
D13
D14
D15
D16
Dome
Door lock
Door lock input
Door locks system
Door unlock input
Driver door ajar
Driver door lock
Engine controls system
Exterior lamps
Exterior lights system
Fuel enable
Fuse block (behind right side of dash)
G201 (right side of dash cross beam, behind fuse block)
Ground
Headlamp circuit breaker 20a
Headlamp switch
Headlights system
Horn
Horn system
Hot at all times
Hot in acc or run
Hot in run, bulb test, or start
I/p ign fuse 10a
Ign key switch input
Ignition 1
Instrument cluster system
Int lamp fuse 10a
Interior lamps "on"
Interior lights system
Key lock sw input
Left turn input
Mall fuse 10a
Mall pgm fuse 10a
Mall program
Park input
Park lamps "off" input
Pass door ajar
Pass door unlock
Pnk
Protected battery feed
Pwr lock fuse 15a
Radio fuse 10a
Rap
Rap fuse 10a
Remote control door lock receiver (left side of dash, behind driver information center)
Rfa cmdi
Rfa link
Right turn input
S202
S209
S265
S285
Seat belt switch input
Seat belt telltale
Security led
Security system tamper
Tan
Theft deterrent indicator lamp (top center of dash)
Theft deterrent relay (below left side of dash, mounted to bcm mounting bracket)
Trunk ajar switch
Underhood accessory wiring junction block (mounted to right strut tower)
Vehicle speed input (5v)
Warning systems

COMPUTER DATA LINES

Computer Data Lines for Pontiac Grand Prix SE 1999

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List of elements for Computer Data Lines for Pontiac Grand Prix SE 1999:

Cig ltr fuse 15a
D12
Data clss 2
Data link connector (dlc) (under left side of dash, right of steering column)
E&c serial data
Electronic brake traction control module (ebtcm) (left side of engine compt, part of brake pressure modulator valve)
Fuse block
G201 (right side of dash cross beam, behind fuse block)
Heater-a/c control (w/ cj2)
Hot at all times
Inflatable restraint sensing & diagnostic module (sdm) (below carpet, under right front seat)
Instrument cluster head-up display
Multi disc cd player
Powertrain control module (pcm) (left front side of engine compt, in air cleaner assembly)
Radio
S131 (engine harn, 4 cm from ebtcm breakout)
S211
S225 (dash harn, 5 cm from dlc)
S237 (dash harn, 30 cm from dlc breakout)
S238
Tan
Trip calculator
Uart data

COOLING FAN

Cooling Fan Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Cooling Fan Wiring Diagram for Pontiac Grand Prix SE 1999:

A10
All times
C10
C11
Cool fan 2 maxi fuse 30a
Cool fan 1 maxi fuse 40a
Cool fan 1 relay
Cool fan 2 relay
Cool fan 3 relay
Engine coolant fan motor 1 (lh 3.1l) (rh 3.8l)
Engine coolant fan motor 2 (rh 3.1l) (lh 3.8l)
F11
G117 (left front of engine)
Hi spd ctrl
Hot at
Low spd ctrl
Powertrain control module (left front side of engine compt, in air cleaner assembly)
S105 (engine harn, 4 cm from engine coolant fan wiring harness breakout)
Underhood electrical center

CRUISE CONTROL

Cruise Control Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Cruise Control Wiring Diagram for Pontiac Grand Prix SE 1999:

All times
Cruise control module (front of left strut tower)
Cruise control release switch (on brake pedal bracket)
Cruise control switch
Cruise fuse 10a
Cruise on/off
Cruise release
Cruise set/coast
Disable input
Disable output
Engage ouput
Engaged input
Exterior lights system
Fuse block (behind right side of dash)
G102 (left side of engine compt, base of strut tower)
Ground
Hot at
Hot in run, bulb
Ignition
Nca
Off
Pnk
Powertrain control module (pcm) (left front of engine compt)
R/a
Resume/accel
S205 (i/p harness, near steering column)
S266
Set sw
Stop lamp fuse 15a
Stoplight switch (on brake pedal support bracket)
Test or start
Underhood acessory wiring junction block (mounted to right strut tower)
Vehicle speed input
Vehicle speed out
Vehicle speed sensor (vss) (lower right side of engine compt, on transaxle)
Vss high
Vss low

DEFOGGERS

Defogger Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Defogger Wiring Diagram for Pontiac Grand Prix SE 1999:

(1999-00)
(2000-01)
(c60)
(c60) (cj2)
(cj2)
(inside left door sill, forward of left front seat)
(right side of dash cross beam, behind fuse block)
A nca
C c2
C16
D15
Defog enable
Defog ind
Defog request
Defogger ind
Dic/hvac fuse 10a
Display dimming
Exterior lights system
G201
G309
Ground
Hot at all times
Hot in run
Hvac control module
I/p fuse block
Ign
Interior lights system
J c2
K c2
M c2
Nca
Park lamps on
R defog fuse 30a
Radio noise suppressor wire (in right "c" pillar, in middle of rear window panel)
Rear defogger switch
Rear window defogger grid
Rear window defogger relay (behind glove box, mounted to underside of cross-car beam)
S206
S213
S303

ELECTRONIC POWER STEERING

Electronic Power Steering Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Electronic Power Steering Wiring Diagram for Pontiac Grand Prix SE 1999:

(base of steering column) g202
1995 vftc c
A/c clu/ abs ign fuse 10a
Data
Data link connector (dlc) (under left side of dash, right of steering column)
Electronic brake control module (ebcm) (left side of engine compartment, part of brake pressure modulator valve)
Ground
Hot in run, bulb test & start
Ignition
Msva high
Msva low
Nca
Pnk
Powertrain control module (pcm) (left front side of engine compartment, in air cleaner assembly)
S131 (engine wiring harness, left side of engine compartment, approximately 4 cm from ebcm breakout)
Steering gear
Steering gear (msva) actuator (left rear of engine compartment, behind transaxle)
Tan
Underhood accessory wiring junction block (mounted to right strut tower)

ENGINE PERFORMANCE

3.1L

3.1L VIN M, Engine Performance Wiring Diagrams (1 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.1L VIN M, Engine Performance Wiring Diagrams (1 of 4) for Pontiac Grand Prix SE 1999:

(eng harn, left side of eng compt 2 in from ebtcm breakout) s131
(on transaxle stud)
(pins 21-27 not used)
(pins 39-42 not used)
(pins 49-52 not used)
(pins 62-63 not used)
1-2 ss valve control
2-3 ss valve control
3x ref high
3x ref low
A12
Anti-theft system
Bypass control
C10
Camshaft position sensor (front of eng, below intake plenum)
Canister vent fuse 10a
Charge ind control
Ckp sensor signal
Cmp signal
Cooling fan system
Crankshaft position sensor (24x) (front of eng, behind harmonic balancer)
Crankshaft position sensor (7x) (lower right side of of eng, below exhaust manifold)
Cruise control system
Cruise disable output
D11
Data link connector (under left side of dash, right of steering column)
Ecm fuse 10a
Ecm sense fuse 10a
Egr sensor ground
Egr val control (low)
Elek ign fuse 15a
Evap purge val drviver
Fuel gauge siganl
Fuel inj 1 driver
Fuel inj 2 driver
Fuel inj 3 driver
Fuel inj 5 driver
Fuel inj 6 driver
Fuse block (behind right side of dash, in glove box opening)
G129
G129 (on transaxle stud)
High speed fans control
Ho2s 1 low
Ho2s 2 low
Hot at all times
Hot coolant ind control
Hot in run, bulb test or start
Iac coil b high
Iat sensor ground
Ic control
Ign1-uh fuse 15a
Ignition
Ignition control module (top right side of engine)
Inj fuse 10a
Instrument cluster system
Knock sensor (left side of eng, above starter)
Knock sensor signal
Low speed fans control
Maf sensor signal
Map 5v ref
Map/ect sensor ground
Nca
Pcm ground
Pnk
Pnk b
Power (battery)
Powertrain control module (left front side of eng compt, in air cleaner assembly)
Red
S106
Serial data (class 2)
Serial data (uart)
Spark plugs
Starting/ charging system
Tan
Tcc brake switch input
Tft sensor ground
Theft deter fuel enable
Tp sensor ground
Tr switch input b
Underhood accessory wiring junction block (mounted to right strut tower)
Vss high
Vss low
Vss output

3.1L VIN M, Engine Performance Wiring Diagrams (2 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.1L VIN M, Engine Performance Wiring Diagrams (2 of 4) for Pontiac Grand Prix SE 1999:

(mounted to right strut tower) underhood accessory wiring junction block
A12
Accessory wiring junction block (mounted to right strut tower)
B10
D10
Evaporative emissions canister purge solenoid valve (top right side of eng, behind ignition control module)
Evaporative emissions canister vent solenoid valve (behind left side of rear fascia splash shield, behind wheelwell)
F12
Fuel injectors
G129 (on transaxle stud)
Instrument cluster system
Pnk
Red
S105
S109
Stop- light switch (on brake pedal support c2 bracket)
Tan
Transaxle range switch (left side of eng compt, on transaxle)
Underhood c2
Vehicle speed sensor (lower right side of eng compt, on transaxle)

3.1L VIN M, Engine Performance Wiring Diagrams (3 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.1L VIN M, Engine Performance Wiring Diagrams (3 of 4) for Pontiac Grand Prix SE 1999:

(body harn, below rear window panel, 4 in from break- out to fuel tank harn connector)
(eng harn, inboard of coolant bottle, 2 in from the pcm breakout)
(fuel inj harn, on top of eng, 1 in from inj 3 breakout)
(on bottom of engine oil pan) engine oil level indicator switch
(on throttle body assembly) idle air control (iac) valve
(on transaxle stud) g129
(top rear of eng, in air cleaner duct) mass air flow sensor
A/c refrigerant pressure sensor (on left side of eng compt, on accumulator)
Coil a
Coil b
Engine coolant temperature (ect) sensor (top left rear of eng, below throttle body)
Exhaust gas recirculation valve (top right rear of eng, near throttle body)
Fuel tank
Fuel tank pressure sensor
Instrument cluster
Intake air temperature (iat) sensor (left front of eng compt, in air cleaner duct)
Malfunction indicator lamp
Manifold absolute pressure sensor (top right side of eng, above valve cover)
Pnk
Red
S106
S121
S167
S409
Tan
Throttle position sensor (on throttle body assembly)
Underhood accessory wiring junction block (mounted to right strut tower)

3.1L VIN M, Engine Performance Wiring Diagrams (4 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.1L VIN M, Engine Performance Wiring Diagrams (4 of 4) for Pontiac Grand Prix SE 1999:

(not used) b4
(pin 45-48 not used)
(pin 51-54 not used)
(pins 12-15 not used)
(pins 19-21 not used)
(pins 29,31,32 not used)
(pins 62-65 not used)
(pins 75-77 not used)
(right door sill)
1-2 shift solenoid
2-3 shift solenoid
5v ref
87a
A/c compress clutch rly
A/c refrig press signal
A/c request signal
Air conditioning system
Auto transaxle fluid temperature sensor
Change oil soon ind
Ckp sensor batt (+)
Ckp sensor ground
Cmp sensor batt (+)
Cmp sensor ground
Cruise control system
Cruise status
Ect sensor signal
Egr pintle position signal
Egr solenoid control
Egr valve 5v ref
Eng oil level switch in
Evap can vent sol cont
Fuel inj 4 driver
Fuel level sensor
Fuel level sensor input
Fuel pump
Fuel pump fuse 15a
Fuel pump relay
Fuel pump relay control
Fuel tank
Fuel tank press signal
Fuse block (behind right side of dash, in glove box opening)
G129 (on transaxle stud)
G316
Gen terminal l control
Heated oxygen sensor (ho2s) 1 (in right bank exhaust manifold)
Heated oxygen sensor (ho2s) 2 (in exhaust system, rear of catalytic converter)
Ho2s sensor 1 high
Ho2s sensor 2 high
Hot at all times
Hot in run, bulb test or start
Hot in run, bulb test, or start
I/p-ign fuse 10a
Iac coil a low
Iac coil b low
Iac valve a high
Iat sensor signal
Ign1-uh fuse 15a
Instrument cluster system
Low oil level ind control
Map sensor signal
Mil control
Nca
Pnk
Pnk e
Powertrain control module (left front side of eng compt, in air cleaner assembly)
Red
S105
S209
S406
Sensor ground
Starting/ charging system
Tach signal
Tan
Tcc fuse 10a
Tcc pwm sol val control
Tcc pwm solenoid
Tcc solenoid
Tcc solenoid control
Tft sensor signal
Tp sensor signal
Tps 5v ref
Tr switch input a
Tr switch input c
Tr switch parity input
Transaxle
Underhood accessory wiring junction block (mounted to right strut tower)

3.8L

3.8L VIN 1, Engine Performance Wiring Diagrams (1 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN 1, Engine Performance Wiring Diagrams (1 of 4) for Pontiac Grand Prix SE 1999:

(eng harn, left side of eng compt, 2 in from breakout to ebtcm)
(ign harn, top of eng, near ign control module)
(not used)
(pin 11 not used)
(pin 14 not used)
(pins 21 & 23-27 not used)
(pins 40-42 not used)
(pins 49-52 not used)
(pins 66-67 not used)
1-2 ss valve control
18x ref signal
2-3 ss valve control
3x ref signal
A/c press sens ground
A/t iss sensor high
A/t iss sensor low
A12
Anti- theft system
B12
Bank 1 ks signal
Bank 2 ks signal
Battery
Bypass control
C10
C12
Camshaft position sensor (front of eng, above crankshaft pulley)
Canister vent fuse 10a
Charge indicator ctrl
Cmp signal
Cooling fans system
Crankshaft position sensor (front of eng, behind harmonic balancer)
Cruise control system
Cruise disable output
D11
Data link connector (dlc) (under left side of dash, right of steering column)
Ecm fuse 10a
Ecm sense fuse 10a
Ect sensor ground
Egr sensor ground
Egr val control (gnd)
Elek ign fuse 15a
Evap purge val drviver
F/pump speed ctrl rly
Fuel inj 1 driver
Fuel inj 2 driver
Fuel inj 4 driver
Fuel inj 5 driver
Fuel inj 6 driver
Fuel level output
Fuse block (behind right side of dash, in glove box opening)
G120 (on ignition control module bracket)
G129 (on transaxle stud)
High speed fans control
Hos1 low
Hos2 low
Hot at all times
Hot coolant ind ctrl
Hot in run bulb test, or start
Hot in run, bulb test or start
Iac coil b high
Iat sensor ground
Ignition
Ignition control
Ignition control module (top left front of eng)
Inj fuse 10a
Instrument cluster system
Knock sensor bank 1 (left side of eng, above starter)
Knock sensor bank 2 (right side of eng, below exhaust manifold)
Low speed fans control
Maf sensor signal
Map sensor 5v ref
Map sensor ground
Pcm ground
Pnk
Pnk p
Powertrain control module (left front side of eng compt, in air cleaner assembly)
Red
Ref low
S106
S131
S144
S145
S218 (i/p harn, near blower motor)
Serial data (class ii)
Serial data (uart)
Spark plugs
Starting/charging system
Tan
Tcc brake switch input
Tft sensor ground
Theft fuel enable signal
Torque requested
Tp sensor ground
Tr switch input b
Trans fluid press sw a
Underhood accessory wiring junction block (mounted to right strut tower)
Vss high
Vss low
Vss output

3.8L VIN 1, Engine Performance Wiring Diagrams (2 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN 1, Engine Performance Wiring Diagrams (2 of 4) for Pontiac Grand Prix SE 1999:

(i/p harn, 12 in from data link connector breakout)
(mounted to right strut tower) underhood accessory wiring junction block
(on transaxle stud)
(w/u40)
A12
B10
D10
Electronic brake traction control module (left side of eng compt, part of brake pressure, modulator valve)
Evaporative emissions (evap) canister purge solenoid valve (top right of eng, near center of valve cover)
Evaporative emissions (evap) canister vent solenoid valve (behind left side of rear fascia splash shield, behind wheelwell)
F12
Fuel injectors
G129
G201 (right side of dash crossbeam, behind fuse block)
Instrument cluster
Instrument cluster system
Nca
Performance shift switch
Pnk
Red
S105
S106
S211
S236
Stop- light switch (on brake pedal support c2 bracket)
Tan
Transaxle range switch (left side of eng compt, on transaxle)
Underhood accessory wiring junction block (mounted to right strut tower)
Vehicle speed sensor (lower right side of eng compt, on transaxle)

3.8L VIN 1, Engine Performance Wiring Diagrams (3 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN 1, Engine Performance Wiring Diagrams (3 of 4) for Pontiac Grand Prix SE 1999:

(1999)
(2000)
(body harn, below rear window panel)
(eng harn, inboard of coolant bottle, 2 in from pcm breakout)
(in exhaust system, rear of catalytic converter) heated oxygen sensor (ho2s) 2
(in right bank exhaust manifold) heated oxygen sensor (ho2s) 1
(on bottom of engine oil pan) engine oil level indicator switch
(on throttle body assembly) idle air control (iac) valve
(on transaxle stud)
(top rear of eng, part of throttle body assembly) mass airflow (maf) sensor
A tan
A/c refrigerant pressure sensor (on left side of eng compt, on accumulator)
Coil a
Coil b
D pnk
Engine coolant temperature (ect) sensor (top left rear of eng, below throttle body)
Exhaust gas recirculation (egr) valve (top right rear of eng, near throttle body)
Fuel tank
Fuel tank pressure sensor
G129
Hot in run, bulb test or start
Ign1-uh fuse 15a
Instrument cluster
Intake air temperature (iat) sensor (left front of eng compt, in air cleaner duct)
Malfunction indicator lamp
Manifold absolute pressure (map) sensor (top right rear of eng, above valve cover)
Nca
Pnk
Red
S105
S167
S409
Tan
Tcc fuse 10a
Throttle position (tp) sensor (on throttle body assembly)
Underhood accessory wiring junction block (mounted to right strut tower)

3.8L VIN 1, Engine Performance Wiring Diagrams (4 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN 1, Engine Performance Wiring Diagrams (4 of 4) for Pontiac Grand Prix SE 1999:

(1999)
(2000)
(not used)
(on transaxle stud)
(pin 47-48 not used)
(pins 12-15 not used)
(pins 29,31-32 not used)
(pins 40-41 not used)
(pins 51-54 not used)
(pins 62 & 64-65 not used)
(pins 71-76 not used)
(right door sill, forward of right front seat)
1-2 shift solenoid
2-3 shift solenoid
5v ref
87a
A auto transaxle fluid temperature sensor
A/c compress clutch rly
A/c refrig press signal
A/c request signal
A/t iss solenoid
Air conditioning system
Automatic transaxle fluid pressure manual valve position switch
Boost control sol driver
Change oil soon ind ctrl
Cruise control system
Cruise engaged input
Ect sensor signal
Egr pintle position signal
Egr pintle sens 5v ref
Egr valve control
Eng oil level sw input
Evap can vent sol cont
F/pmp spd cont relay
Fuel inj 3 control
Fuel level sensor
Fuel level sensor input
Fuel pump
Fuel pump fuse 15a
Fuel pump relay
Fuel pump relay control
Fuel pump resistor (outside of right front frame rail)
Fuel tank
Fuel tank press signal
Fuse block (behind right side of dash, in glove box opening)
G129
G316
Gen terminal l control
Ho2s 1 signal
Ho2s 2 signal
Hot at all times
Hot in run, bulb test, or start
I/p ign fuse 10a
Iac coil a high
Iac coil a low
Iac coil b low
Iat sensor signal
Ign1-uh fuse 15a
Instrument cluster system
Low oil level ind ctrl
Map sensor signal
Mil control
Nca
Pc sol valve high
Pc sol valve low
Pc solenoid
Performance shift switch
Pnk
Pnk e
Powertrain control module (pcm) (left front side of eng compt, in air cleaner assembly)
Red
S106
S209
S406
Sensor ground
Starting/ charging system
Supercharger by-pass valve (top rear of eng, above left valve cover)
Tach control
Tan
Tcc pwm solenoid
Tcc pwm solenoid control
Tcc release switch input
Tft sensor signal
Torque delivered
Tp sensor 5v ref
Tp sensor signal
Tr switch input a
Tr switch input c
Tr switch parity input
Trans fluid press sw b
Trans fluid press sw c
Transaxle
Underhood accessory wiring junction block (mounted to right strut tower)

3.8L VIN K, Engine Performance Wiring Diagrams (1 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN K, Engine Performance Wiring Diagrams (1 of 4) for Pontiac Grand Prix SE 1999:

(eng harn, left side of eng compt, 2 in from breakout to ebtcm)
(ign harn, top of eng, near ign control module)
(not used)
(pin 11 not used)
(pin 14 not used)
(pins 21 & 23-27 not used)
(pins 40-42 not used)
(pins 49-52 not used)
(pins 66-67 not used)
1-2 ss valve control
18x ref signal
2-3 ss valve control
3x ref signal
A/c press sens ground
A/t iss sensor high
A/t iss sensor low
A12
B12
Bank 1 ks signal
Bank 2 ks signal
Battery
Body control module (bcm) (behind left side dash, left of steering column)
Bypass control
C10
C12
Camshaft position sensor (front of eng, above crankshaft pulley)
Canister vent fuse 10a
Charge indicator ctrl
Cmp signal
Cooling fans system
Crankshaft position sensor (front of eng, behind harmonic balancer)
Cruise control system
Cruise disable output
D11
Data link connector (dlc) (under left side of dash, right of steering column)
Ecm fuse 10a
Ecm sense fuse 10a
Ect sensor ground
Egr sensor ground
Egr val control (gnd)
Elek ign fuse 15a
Evap purge val drviver
Fuel inj 1 driver
Fuel inj 2 driver
Fuel inj 4 driver
Fuel inj 5 driver
Fuel inj 6 driver
Fuel level output
Fuse block (behind right side of dash, in glove box opening)
G120 (on ignition control module bracket)
G129 (on transaxle stud)
High speed fans control
Hos1 low
Hos2 low
Hot at all times
Hot coolant ind ctrl
Hot in run bulb test, or start
Hot in run, bulb test or start
Iac coil b high
Iat sensor ground
Ignition
Ignition control
Ignition control module (top left front of eng)
Inj fuse 10a
Instrument cluster system
Knock sensor bank 1 (left side of eng, above starter)
Knock sensor bank 2 (right side of eng, below exhaust manifold)
Low speed fans control
Maf sensor signal
Map sensor 5v ref
Map sensor ground
Pcm ground
Pnk
Pnk p
Powertrain control module (left front side of eng compt, in air cleaner assembly)
Red
Ref low
S106
S131
S144
S145
S218 (i/p harn, near blower motor)
Serial data (class ii)
Serial data (uart)
Spark plugs
Starting/charging system
Tan
Tcc brake switch input
Tft sensor ground
Theft fuel enable signal
Tp sensor ground
Tr switch input b
Trans fluid press sw a
Underhood accessory wiring junction block (mounted to right strut tower)
Vss high
Vss low
Vss output

3.8L VIN K, Engine Performance Wiring Diagrams (2 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN K, Engine Performance Wiring Diagrams (2 of 4) for Pontiac Grand Prix SE 1999:

(mounted to right strut tower) underhood accessory wiring junction block)
(on transaxle stud)
A12
B10
D10
Evaporative emissions (evap) canister purge solenoid valve (top right of eng, near center of valve cover)
Evaporative emissions (evap) canister vent solenoid valve (behind left side of rear fascia splash shield, behind wheelwell)
F12
Fuel injectors
G129
Instrument cluster system
Pnk
Red
S105
S106
Stop- light switch (on brake pedal support c2 bracket)
Tan
Transaxle range switch (left side of eng compt, on transaxle)
Underhood accessory wiring junction block (mounted to right strut tower)
Vehicle speed sensor (lower right side of eng compt, on transaxle)

3.8L VIN K, Engine Performance Wiring Diagrams (3 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN K, Engine Performance Wiring Diagrams (3 of 4) for Pontiac Grand Prix SE 1999:

(body harn, below rear window panel)
(eng harn, inboard of coolant bottle, 2 in from pcm breakout)
(in exhaust system, rear of catalytic converter) heated oxygen sensor (ho2s) 2
(in right bank exhaust manifold) heated oxygen sensor (ho2s) 1
(on bottom of engine oil pan) engine oil level indicator switch
(on throttle body assembly) idle air control (iac) valve
(on transaxle stud)
(top rear of eng, part of throttle body assembly) mass airflow (maf) sensor
A tan
A/c refrigerant pressure sensor (on left side of eng compt, on accumulator)
Coil a
Coil b
D pnk
Engine coolant temperature (ect) sensor (top left rear of eng, below throttle body)
Exhaust gas recirculation (egr) valve (top right rear of eng, near throttle body)
Fuel tank
Fuel tank pressure sensor
G129
Hot in run, bulb test or start
Ign1-uh fuse 15a
Instrument cluster
Intake air temperature (iat) sensor (left front of eng compt, in air cleaner duct)
Malfunction indicator lamp
Manifold absolute pressure (map) sensor (top of eng, on front of intake manifold)
Nca
Pnk
Red
S105
S167
S409
Tan
Tcc fuse 10a
Throttle position (tp) sensor (on throttle body assembly)
Underhood accessory wiring junction block (mounted to right strut tower)

3.8L VIN K, Engine Performance Wiring Diagrams (4 of 4) for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN K, Engine Performance Wiring Diagrams (4 of 4) for Pontiac Grand Prix SE 1999:

(not used)
(on transaxle stud)
(pin 47-48 not used)
(pins 12-15 not used)
(pins 29,31-32 not used)
(pins 40-41 not used)
(pins 51-54 not used)
(pins 62 & 64-65 not used)
(pins 71-76 not used)
(right door sill, forward of right front seat)
1-2 shift solenoid
2-3 shift solenoid
5v ref
87a
A auto transaxle fluid temperature sensor
A/c compress clutch rly
A/c refrig press signal
A/c request signal
A/t iss solenoid
Air conditioning system
Automatic transaxle fluid pressure manual valve position switch
Change oil soon ind ctrl
Cruise control system
Cruise engaged input
Ect sensor signal
Egr pintle position signal
Egr pintle sens 5v ref
Egr valve control
Eng oil level sw input
Evap can vent sol cont
Fuel inj 3 control
Fuel level sensor
Fuel level sensor input
Fuel pump
Fuel pump fuse 15a
Fuel pump relay
Fuel pump relay control
Fuel tank
Fuel tank press signal
Fuse block (behind right side of dash, in glove box opening)
G129
G316
Gen terminal l control
Ho2s 1 signal
Ho2s 2 signal
Hot at all times
Hot in run, bulb test, or start
I/p ign fuse 10a
Iac coil a high
Iac coil a low
Iac coil b low
Iat sensor signal
Instrument cluster system
Low oil level ind ctrl
Map sensor signal
Mil control
Pc sol valve high
Pc sol valve low
Pc solenoid
Pnk
Pnk e
Powertrain control module (pcm) (left front side of eng compt, in air cleaner assembly)
Red
S106
S209
S406
Sensor ground
Starting/ charging system
Tach control
Tan
Tcc pwm solenoid
Tcc pwm solenoid control
Tcc release switch input
Tft sensor signal
Tp sensor 5v ref
Tp sensor signal
Tr switch input a
Tr switch input c
Tr switch parity input
Trans fluid press sw b
Trans fluid press sw c
Transaxle
Underhood accessory wiring junction block (mounted to right strut tower)

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Back-up Lamps Wiring Diagram for Pontiac Grand Prix SE 1999:

A8 c1
B/u lamp fuse 10a
G316 (right front door sill)
Hot at all times
Left back-up lamp
Mirrors system (automatic day/night mirror)
Park/neutral position switch (left of engine, on transaxle)
Right back-up lamp
S402
Underhood fuse block

Exterior Lamps Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Exterior Lamps Wiring Diagram for Pontiac Grand Prix SE 1999:

(behind left side of dash, left of steering column) body control module (bcm)
(right front door sill) g316
A c1
A left
A10
A11
Anti-lock brakes system
B c1
B10
B11
C11
C12
C14
Center high mount stop lamp (chmsl)
Closed in night mode
Cruise control switch
D11
Daytime running lamps (drl) control module (behind left side of dash)
F10
F11
Fuse block
G108 (left side of front end upper tie bar)
G201 (right side of dash, on crossbeam behind fuse block)
Hazard
Hazard fuse 15a
Hazard lamp/ turn signal lamp flasher (below left side of dash, mounted on multi-purpose bracket near bcm)
Head
Headlamp switch
Headlights system (fog lamps switch)
Hot at all times
Hot in run, bulb test or start
Instrument cluster
Instrument cluster heads- up-display (hud) module (top left side of dash)
Left
Left front park/turn lamp
Left rear side marker lamp
Left tail/ stop/ turn lamp
Left turn indic
License lamp
Nca
Normal
Off
Park
Park lps fuse 20a
Pk lps sw
Pnk
Right
Right front park/turn lamp
Right rear side marker lamp
Right tail/ stop/ turn lamp
Right turn indic
S124
S204 (i/p harness, 4 cm from data link connector breakout)
S205 (i/p harness, left side of dash)
S230
S282 (i/p harn, 4 cm from headlamp switch)
S289 (i/p harness, right side of cluster, 7 cm from trip computer conn breakout)
S290 (i/p harness, right side of cluster, behind trip computer conn breakout)
S406
Side marker lamps
Stop fuse 15a
Stop lamp switch (on brake pedal support bracket)
Turn fuse 10a
Turn signal switch
Underhood accessory wiring junction block

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 3) for Pontiac Grand Prix SE 1999

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List of elements for Ground Distribution Wiring Diagram (1 of 3) for Pontiac Grand Prix SE 1999:

(eng harn, 44 cm from pcm conn)
(eng harn, front of eng compt, 4 cm from breakout to engine coolant fan jumper conn)
(forward lamp harn, behind left headlamp)
(vin k,1 only)
(vin k,1)
(vin m)
A a
A/c clu diode
A/c compressor clutch coil
B b
Battery
C1 d
C11
Cool fan relay
Engine coolant level indicator module
Engine oil level switch
Engine oil pressure indicator switch
Fuel pump relay
G101 (at base of battery)
G108 (left side of front end upper tie bar)
G110 (left front of eng, on ignition control module bracket)
G129 (on transaxle stud)
Heated oxygen sensor (ho2s) 1
Heated oxygen sensor (ho2s) 2
Horns
Ignition control module (icm)
Ignition main relay
Left engine coolant fan motor
Left fog lamp
Left headlamp
Left park/turn lamp
Mass air- flow (maf) sensor
Nca
Park/ neutral position switch
Powertrain control module (pcm)
Right engine coolant fan motor
Right fog lamp
Right headlamp
Right park/turn lamp
S105
S106
S124
Underhood accessory wiring junction block
Vin k, 1
Vin m
Windshield washer pump motor
Windshield washer solvent level switch

Ground Distribution Wiring Diagram (2 of 3) for Pontiac Grand Prix SE 1999

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List of elements for Ground Distribution Wiring Diagram (2 of 3) for Pontiac Grand Prix SE 1999:

(auto temp)
(i/p harn, behind center of dash, 11 cm from data link connector (dlc) breakout)
(i/p harn, left rear of eng compt)
(i/p harn, right side of steering column)
(left side of eng compt, at base of left strut tower)
(man temp)
(steering column)
A18
Ashtray lamp
Automatic transaxle control position indicator lamp
Blower motor control module
Blower motor resistor
Body control module (bcm)
Brake fluid level indicator switch
C1 d
C1 k c2
C1 l
C2 a
C395
Cigar lighter
Cruise control module
Data link connector (dlc)
Daytime running lamp (drl) control module
Driver information display
Driver seat heater switch
Electronic brake traction control module (ebtcm)
Floor console accessory power receptacle
Fog lamp switch
G102
G201 (right side of dash cross beam, behind fuse block)
G202 (base of steering column)
G204 (left side of steering column)
G207
Hazard lamp/ turn signal lamp flasher
Headlamp switch
Heater- a/c control
Heater-a/c control (cj2)
I/p compartment lamp
Ignition key alarm switch
Ignition switch
Inflatable restraint sensing and diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Instrument cluster
Instrument cluster head up display (hud) dimmer switch
Instrument cluster head-up display (hud)
Left electric actuator
Left steering wheel radio control switches
Low frequency audio amplifier
Multi disc cd player (w/ u18)
Nca
Performance shift switch (vin1)
Power drop connector
Radio
Radio antenna module (w/ u77)
Remote control door lock receiver (rcdrl)
Right steering wheel radio control switches
S125
S211
S213 (i/p harn, 4 cm from blower motor resistors/control module breakout)
S230
S285 (i/p harn, right side of steering column, 14 cm from data link connector (dlc) breakout)
S418 (body harn, forward of rear seat riser)
Steering column electric park lock
Tan
Theft deterrent shock sensor
Trip calculator
W/ auto temp control
W/ floor console
W/ u1s
W/ u85
W/o auto temp control
W/o u1s
Windshield wiper motor

Ground Distribution Wiring Diagram (3 of 3) for Pontiac Grand Prix SE 1999

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List of elements for Ground Distribution Wiring Diagram (3 of 3) for Pontiac Grand Prix SE 1999:

(2 door)
(4 door)
(body harn, 10 cm from fuel tank harn breakout)
(dome lamp harn, 4 cm from windshield header courtesy/ reading lamps breakout)
(rear compt lid harn, 8 cm from rear compt lid release switch breakout)
(rear lamp harn, behind right tail lamp, 4 cm from right tail/ stop/turn lamp breakout)
C1 c
Center high mounted stoplamp
Driver seat adjuster switch
Driver seat cushion cover
Driver seat heater control module
Fore/aft lumbar adjuster relay
Fuel pump
Fuel tank
G309 (inside left door sill, forward of left front seat)
G316 (right front door sill)
Heated seat back cushion cover
Inside rear- view mirror
Left backup lamp
Left front door ajar switch
Left front door lock switch
Left front window switch
Left key cylinder lock switch
Left rear door ajar switch
Left rear side marker lamp
Left roof rail courtesy/ reading lamp
Left sunshade illuminated mirror
Left tail/ stop/turn lamp
License lamp
Nca
Outside remote control rearview mirror switch
Rear compartment lid ajar switch
Rear compartment courtesy lamp switch
Rear compartment lid lock release actuator solenoid
Rear defogger grid
Right backup lamp
Right front door lock
Right front door lock switch
Right front window switch
Right key cylinder lock switch
Right rear door ajar switch
Right rear side marker lamp
Right roof rail courtesy/ reading lamp
Right sunshade illuminated mirror
Right tail/ stop/turn lamp
Roof console accessory power receptacle
S303 (body harn, below left side of driver seat, 5 cm from breakout to ground g309)
S330 (driver seat harn, below driver seat, 26 cm from breakout to 6-pin connector)
S390
S402
S406
S416
S504 (left door harn, 6 cm from left door lock switch breakout)
S604 (right front door harn, 6 cm from dor lock switch breakout)
Seat belt switch
Sunroof module
Up/down lumbar adjuster relay
W/ heated seats
W/ power seats
W/o power seats
Windshield header courtesy/ reading lamp

HEADLIGHTS

Headlight Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Headlight Wiring Diagram for Pontiac Grand Prix SE 1999:

(i/p harn, behiind top of cluster, approx 9cm from cluster breakout)
(i/p harn, behind left side of dash, approx 4cm from headlamp sw breakout)
(i/p harn, right side of steering column, approx 17cm from data link conn breakout)
(i/p harn, right side of steering column, approx 4cm from data link conn breakout)
Body control module (left of steering column)
Closed in day mode
Closed in low light mode
Daytime running lamps ambient light sensor (top center of dash)
Daytime running lamps control module (behind left side of dash)
Daytime running lamps diode
Dic/ hvac fuse 10a
Drl fuse 10a
E10
E11
E12
E13
Energized in low light mode
Exterior lights system
Flash
Fog lamp switch
Fog lp fuse 10a
Fog lps relay
Fuse block (behind right side of dash)
G108 (left side of front end upper tie bar)
G201 (right side of dash, behind fuse block)
Ground
Head
Headlamp circuit breaker 20a
Headlamp dimmer switch
Headlamp switch
Hi-beam input
High
Hot at all times
Hot in run
Hot in run, bulb test and start
Ignition input
Illumination
Instru- ment cluster
Instrument cluster head-up display
Instrument cluster system
Interior lights system
Left fog lamp
Left head- lamp
Light sensor input
Low
Low high
Off
On ind
Park
Park brake indicator switch
Park brake input
Park lamp off
Park lp fuse 20a
Pnk
Regulator (5v)
Right fog lamp
Right head- lamp
S124
S204
S206
S219
S221
S230
S261 (i/p harn, right side of steering column, approx 24cm from data link conn breakout)
S265 (except base)
S282
S285
Tan
Theft deterrent relay (behind left side of dash)
Underhood accessory wiring junction block (mounted to right strut tower)

HORN

Horn Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Horn Wiring Diagram for Pontiac Grand Prix SE 1999:

A7 c3
Body control module (left of steering column)
G108 (left side of front end upper tie bar)
G201 (right side of dash cross beam, behind fuse block)
G207 (on steering column)
Horn (behind right front fascia)
Horn fuse 15a
Horn relay
Horn switch
Hot at all times
Inflatable restraint steering wheel module
Nca
S124
S229
S230
Slip ring
Turn signal cancel cam
Turn signal switch
Underhood fuse block (mounted on right strut tower)
Vehicle interface unit (viu) (in trunk, at left wheelwell)
W/0 onstar
W/onstar

INSTRUMENT CLUSTER

Instrument Cluster Wiring Diagram (1 of 2) for Pontiac Grand Prix SE 1999

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List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Pontiac Grand Prix SE 1999:

(5 bulbs)
(dash harn, left side of dash, 36cm from body control module) s207
(right side of dash cross beam)
A-c1
A-c2
A10
Abs ind
Accy
Airbag ind
Anti-lock brakes system
B-c1
B-c2
B10
Brake fluid level indicator switch (in brake fluid reservoir)
Brake warn ind
Brk ind ctrl
Btsi fuse 10a
Bulb test
C-c1
C-c2
Charge ind
D-c1
D-c2
D10
Daytime running lamps control module (behind left side of dash)
Dic/hvac fuse 10a
E-c1
E-c2
Engine controls system
Engine coolant level indicator module (mounted on right side of radiator)
Engine coolant temperature gauge
Engine coolant temperature sensor (top left rear of engine, below throttle body)
Exterior lights system
F-c2
F10
Fuel flow out
Fuel gauge
Fuel level sender
Fuel tank
Fuse block (behind right side of dash, in right door opening)
G-c1
G-c2
G102 (left side of engine compt, at base of left strut tower)
G129 (on transaxle stud)
G201
G201 (right side of dash cross beam)
G201 (right side of dash cross beam, behind fuse block)
H-c1
H-c2
Headlights system
High beam ind
Hot at all times
Hot coolant ind
Hot in off, run, bulb test or start
Hot in run
Hot in run, bulb test or start
I-c1
I-c2
Ignition switch
Illumination
Instrument cluster
Interior lights system
Ip-ign fuse 10a
J-c1
J-c2
K-c1
K-c2
L-c1
L-c2
Left turn ind
Lock
Low coolant ind
Low fuel ind
Low oil level ind
M-c1
Malfunction ind. lamp
N-c1
Nca
O-c1
O-c2
Off
Oil pressure ind
P-c2
Park brake indicator switch (on park brake assembly)
Perf shift ind
Pnk
Powertrain control module (left front side of engine compt, in air cleaner assembly)
Prk brk sw
Prndl logic decoder
Q-c1
Q-c2
R-c2
Radio fuse 10a
Right turn ind
Run
S106
S125
S202
S206
S209
S211
S230
S264
S285
S409
Seat belt warning ind
Speedometer
Start
Stepper motor drive
Tachometer
Tan
Underhood accessory wiring junction block (mounted to right strut tower)
Warning systems

Instrument Cluster Wiring Diagram (2 of 2) for Pontiac Grand Prix SE 1999

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List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Pontiac Grand Prix SE 1999:

(behind left side of dash, left of steering column) body control module
(i/p wiring harn, behind right side of dash, approx 22 cm from remote control door lock receiver breakout) s273
(mounted to right strut tower) underhood accessory wiring junction block
(not used)
A10
A11
A12
Anti-lock brakes system
Aux chime out
B10
B11
B12
Batt (b+) in
C15
Change oil ind
Charge ind
Charge warn
Chnge oil ind
Computer data lines system
Coolant temp
Cruise control system
D11
D12
Display dimmer
Driver information display (did) or trip calculator
Dwn
E&c serial data
E/m switch
E/m switch in
E11
Engine oil press
Engine oil pressure indicator switch (3.1l: lower left of engine, above starter) 3.8l: lower right front of engine, above transaxle)
Exterior lights system
G108 (left side of front end upper tie bar)
G201 (right side of dash cross beam, behind fuse block)
G207 (steering column)
G309 (inside left door sill, forward of left front seat)
G316 (right front door sill)
Ground
Headlights system
Hi coolant tmp
High beam ind
Hud motor down
Hud motor up
Hud on/off
Ign pwr in
Instrument cluster head-up display (hud)
Instrument cluster head-up display (hud) dimmer switch
Interior lights system
Left front door lock (ajar switch)
Left rear door lock (ajar switch)
Left turn ind
Lft frt door ind
Lft rr door ind
Low fuel ind
Low oil lvl ind
Low trac ind
Low wash fl ind
Mil ind
Not used
Off
Perf shift ind
Pnk
Powertrain control module (left front side of engine compt, in air cleaner assembly)
Pwm dim in
Rear compartment courtesy lamp switch (on rear compt lid, near latch)
Right front door lock (ajar switch)
Right rear door lock (ajar switc)
Right turn ind
Rt frt door ind
Rt rr door ind
S124
S211
S230
S285
S303
S406
S416
S504
S604
Serial data i/o
Spare ind
Tach sig out
Tan
Tire press ind
Trac off ind
Trac sw out
Trunk ajar ind
Underhood accessory wiring junction block (mounted to right strut tower)
Vf park in
Vss 4000/ppm
Vss sig in
Vss sig out
W/ driver information display (base)
W/ trip computer (up-level)
Warning systems
Windshield washer solvent level switch (right front of eng compt)

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Courtesy Lamps Wiring Diagram for Pontiac Grand Prix SE 1999:

(1999 only)
(body harn, below rear s428
(body harn, below right front seat)
(body harn, under right front door sill)
(dash harn, 8 cm from blower motor resistors breakout)
(dome lamp harn, near right "c" pillar)
(inside left door sill, forward of left front seat)
A nca
B+ feed
Base
Body control module (behind left side of dash, left of steering column)
C96
Ctsy lps ctrl
Dash compartment lamp
Dash compartment lamp switch
Dlc breakout)
Dome
Driver dr ajar
G201 (right side of dash cross beam, behind fuse block)
G309
G316 (right front door sill)
Headlamp switch
Hot at all times
Instrument cluster system
Int lps on
Left roof rail courtesy lamp
Left dash courtesy lamp
Left front door ajar indicator switch
Left front door courtesy warning lamp
Left front roof rail courtesy/ reading lamp
Left rear door ajar indicator switch
Left sunshade lighted vanity mirror
Nca
Nca b
Nca c
Off
Park lp fuse 20a
Pass dr ajar
Rear compartment courtesy lamp
Rear compartment courtesy lamp diode
Rear compartment courtesy lamp switch
Red/
Right dash courtesy lamp
Right front door ajar indicator switch
Right front door courtesy warning lamp
Right rear door ajar indicator switch
Right sunshade lighted vanity mirror
S230
S259
S303
S309
S311 (body harn, below right front seat)
S317
S390
S393 (dome lamp harn, approx 4 cm from right courtesy lamp breakout)
S398
S416
S504
S604
Tan
Underhood accessory wiring junction block
Window panel)
Windshield header courtesy/ reading lamps

Instrument Illumination Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Instrument Illumination Wiring Diagram for Pontiac Grand Prix SE 1999:

(1999)
(2 door)
(2 door) (4 door)
(2000)
(4 door)
Ashtray lamp
Automatic transaxle control position indicator bulb
C16
C60
Cj2
Dash dimmer switch
Driver information display (w/o u4o)
Driver seat heater switch
Fog lamp switch
Fuse block
G201 (right side of dash cross beam, behind fuse block)
G309 (inside left front door sill, forward of left front seat)
G316 (right front door sill)
Head
Headlamp switch
Heater- a/c control
Heater- a/c control (cj2)
Hot at all times
Inflatable restraint steering wheel module coil
Instrument cluster
Instrument cluster head-up display dimmer switch
Left front door lock switch
Left front window switch
Lights on input
Nca
Off
Park
Park lp fuse 20a
Prndl dim
Radio
Right front door lock switch
Right front window switch
S203 (dash harn, above cluster)
S211
S212 (dash harn, right side of dash)
S213
S230
S303
S374 (console harn, near transaxle control switch)
S375
S406
S504
S505
S506
S604
S606
Steering wheel radio control switches
Str whl ilum fuse 2a
Trip calcu- lator
Underhood accessory wiring junction block

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 4) for Pontiac Grand Prix SE 1999

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List of elements for Power Distribution Wiring Diagram (1 of 4) for Pontiac Grand Prix SE 1999:

(c60)
(cj2)
(i/p harn, left side of dash) s265
(i/p harness, behind center of dash)
(i/p harness, below center of dash) s238
(not used)
(steering column)
Accessory time delay (rap) relay (diagram 2 of 4)
Alt sense fuse 10a
Aux/ cnsl fuse 15a
B/u lamp fuse 10a
Base
Batt main 1 maxi fuse 60a
Batt main 2 maxi fuse 60a
Battery
Blower motor control module
Blower motor resistor
Body control module (bcm)
C60
Cd chg fuse 10a
Cig ltr fuse 15a
Cigar lighter
Cj2
Cool fan 1 maxi fuse 30a
Cool fan 1 relay
Cool fan 2 maxi fuse 30a
Cool fan 2 relay
Cool fan relay
Data link connector (dlc)
E c12
E12
Ecm sense fuse 10a
Electronic brake traction control module (ebtcm)
F/pmp spd cont relay
Floor console accessory power receptacle
Fog lamp relay
Fog lp fuse 10a
Fuel pump fuse 15a
Fuel pump relay
Fuse block
Fusible link (10 ga- rust)
G207
Generator
Hazard fuse 15a
Headlamp circuit breaker 20a
Headlamp switch
Headlamps maxi fuse 60a
Heater- a/c control
Horn fuse 15a
Horn relay
Hvac hi fuse 30a
Ign main 1 maxi fuse 40a
Ign main 2 maxi fuse 60a
Int lamp fuse 10a
Multi disc cd player
Nca
Outside remote control rearview mirror switch
Park lp fuse 20a
Park/ neutral position switch
Power drop connector
Powertrain control module (pcm)
Pwr mir fuse 10a
Radio
Radio batt fuse 10a
Rap fuse 10a
Red
Remote battery stud
Remote control door lock receiver (rcdlr)
Roof console accessory power receptacle
S202
Starter
Stop lamp fuse 15a
Stop lamp switch
Theft deterrent indicator lamp
Theft deterrent relay
Theft deterrent shock sensor
To accessory time delay relay (diagram 2 of 4)
To ign main relay (diagram 3 of 4)
To ignition switch (diagram 2 of 4)
To power lock fuse (diagram 4 of 4)
To seat circuit breaker (diagram 4 of 4)
Trip calculator
Turn signal switch
Underhood accessory wiring junction block
Uplevel

Power Distribution Wiring Diagram (2 of 4) for Pontiac Grand Prix SE 1999

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List of elements for Power Distribution Wiring Diagram (2 of 4) for Pontiac Grand Prix SE 1999:

(2 door) (4 door)
(dome lmp harn, 11 cm from reading lamp breakout)
(front floor console harn, near a/t control) s376
(i/p harn, behind right side of instrument cluster)
(i/p harn, below right side of dash)
(i/p harn, below right side of dash) s220
(i/p harn, near steering column) s249
2 door
4 door
A13
Accessory time delay (rap) relay (behind right side of dash)
Accy
Automatic transmission control (btsi)
Body control module (bcm)
Btsi fuse 10a
Bulb test
C13
C201
Canister vent fuse 10a
Cruise control module
Cruise control release switch
Cruise control switch
Cruise fuse 10a
Daytime running lamp (drl) control module
Driver information display
Drl fuse 10a
Ecm fuse 10a
Evaporative emission (evap) canister vent solenoid valve
From ign main 1 maxi fuse (diagram 1 of 4)
From ign main 2 maxi fuse (diagram 1 of 4)
From ignition switch (diagram 2 of 4)
From rap fuse (diagram 1 of 4)
Fuse block
H c
I/p-ign fuse 10a
Ignition switch
Inflatable restraint sensing and diagnostic module (sdm)
Inflatable restraint steering wheel module coil
Inside rearview mirror
Instrument cluster
Instrument cluster head-up display (hud) dimmer switch
Left front window switch
Lock
Mall fuse 10a
Mall pgm fuse 10a
Nca
Off
Park/ neutral position switch
Pnk
Pnk b
Power drop connector
Pwr drop fuse 10a
Pwr wdo circuit breaker 25a
Radio
Radio fuse 10a
Red
Right front window switch
Run
S209
S228
S264 (i/p harn, below center of dash)
S266 (i/p harn, 21 cm from stop lamp switch)
S310 (body harn, under right frt door sill)
S394
Sir fuse 15a
Start
Steering wheel radio control switches
Stop lamp switch
Str whl ctrl fuse 2a
Sunroof fuse 20a
Sunroof module
To canister vent fuse (diagram 2 of 4)
To dic/hvac fuse (diagram 4 of 4)
To ign main relay (diagram 3 of 4)
Trip calculator
Turn fuse 10a
Turn signal switch
Windshield wiper motor
Windshield wiper switch
Wiper fuse 25a

Power Distribution Wiring Diagram (3 of 4) for Pontiac Grand Prix SE 1999

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List of elements for Power Distribution Wiring Diagram (3 of 4) for Pontiac Grand Prix SE 1999:

(4t60-e)
(4t65-e)
(auto trans harn, inside trans housing) s115
(fuel inj harn, 2 cm from fuel inj 2 breakout)
(not used)
(vin k &
1-2 shift solenoid valve
2-3 shift solenoid valve
A/c clu relay
A/c/clu abs/ign fuse 10a
A12
Automatic transaxle
B (vin m)
B12
C12
D11
Electronic brake traction control module (ebtcm)
Elek ign fuse 15a
Evaporative emissions (evap) canister purge solenoid valve
From ecm fuse (diagram 2 of 4)
From remote l battery stud (diagram 1 of 4)
Fuel injector
G129 (on transaxle)
Heated oxygen sensor (ho2s) 1
Heated oxygen sensor (ho2s) 2
Ign main relay
Ign1-uh fuse 15a
Ignition control module (icm)
Inj fuse 10a
Mass airflow (maf) sensor
Nca
P vin 1)
Pnk
Pnk c10
Powertrain control module (pcm)
Red
S106
S109
Stop- lamp switch
Supercharger bypass valve
Tcc fuse 10a
Torque converter clutch pulse width modulation solenoid valve
Torque converter clutch solenoid valve (4t60e-only)
Underhood accessory wiring junction block
Vin 1
Vin k & vin 1
Vin k & vin m
Vin m

Power Distribution Wiring Diagram (4 of 4) for Pontiac Grand Prix SE 1999

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List of elements for Power Distribution Wiring Diagram (4 of 4) for Pontiac Grand Prix SE 1999:

(driver seat harn, below driver seat)
(i/p harness, right side of steering column) s206
Automatic temperature control
Body control module (bcm)
Daytime running lamp (drl) control module
Dic/ hvac fuse 10a
Driver seat adjuster switch
Driver seat heater control module
Driver seat heater switch
Driver seat lumbar adjuster switch
Fore/aft lumbar adjuster relay
From batt main 2 maxi fuse (diagram 1 of 4)
From ignition switch (diagram 2 0f 4)
Fuse block
H seat/ lum fuse 15a
Heater- a/c control
Hvac ctrl fuse 20a
Left electric actuator
Low frequency audio amplifier
Manual a/c
Nca
Pwr lock fuse 15a
R defog fuse 30a
Radio amp fuse 20a
Rear window defogger relay
Red
Right electric actuator
S331
S332
Seat circuit breaker 20a
Trip calculator
Up/down lumbar adjuster relay
Vacuum electric solenoid
W/ heated seats
W/ power lumbar
W/o heated seats
W/o power lumbar

POWER DOOR LOCKS

Power Door Lock Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Power Door Lock Wiring Diagram for Pontiac Grand Prix SE 1999:

left of steering column)
(body harness, under right front seat) s314
(right front door harness, 6cm from right door lock switch breakout) s604
(right side of dash cross beam, behind fuse block)
(w/ rke only)
Accy 1
B/u lamp fuse 10a
Battery
Battery (b+)
Body control module (behind left side of dash,
C13
Door lk (batt)
Door lock
Door unlk cyl
Door unlock
Drvr dr unlk
Fuse block (right side of dash)
G201
G309 (left door sill)
G316 (right door sill)
Ground
Hot at all times
Hot in accy or run
Hot in run, bulb test or start
I/p-ign fuse 10a
Ignition 1
Int lamp fuse 10a
Interior lights system
Left front door lock actuator
Left front door lock switch
Left key cylinder lock switch assembly (left front door)
Left rear door lock actuator
Lock
Mall fuse 10a
Nca
Park input
Park/neutral/position switch (on transaxle)
Pass dr unlk
Pnk
Pwr lock fuse 15a
Radio fuse 10a
Remote control door lock receiver (rke) (left side of dash, behind driver information center)
Rfa link
Right front door lock actuator
Right front door lock switch
Right key cylinder lock switch assembly (right front door)
Right rear door lock actuator
Rr lid release
S202
S209
S285
S303 (body harness, under left front seat)
S315 (body harness, under right front seat)
S504 (left front door harness, 6cm from left door lock switch breakout)
Tan
Trunk, tailgate, fuel doors system
Underhood accessory wiring junction block (mounted to right strut tower)
Unlock

POWER MIRRORS

Electrochromic Mirror Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Electrochromic Mirror Wiring Diagram for Pontiac Grand Prix SE 1999:

(right front door sill) g316
(windshield side) ambient sensor
A8 c1
B/u lamp fuse 10a
Exterior lights system
Fuse block (behind right side of dash)
Gnd
Headlight sensor (mirror side)
Hot at all times
Hot in accy, run, or retained accessory power
Inside rearview mirror (electro- chromic)
Mirror on
Off
On indicator control
Reset to daytime high reflectivity in reverse
S390
S394
Solid state
Sunroof fuse 20a
Transaxle range switch (left side of engine compartment, on transaxle)
Underhood accessory wiring junction block (mounted to right strut tower)

Power Mirrors Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Power Mirrors Wiring Diagram for Pontiac Grand Prix SE 1999:

(inside left door sill, forward of left front seat) g309
Ecb
Fuse block (behind right side of dash)
Hot at all times
Left mirror
Left outside rearview mirror
Mirror motor pack
Outside remote control rearview mirror switch
Pwr mirr fuse 10a
Right mirror
Right outside rearview mirror
Right/ left motor
S504
Up/ down motor

POWER SEATS

6-Way Power Seat Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for 6-Way Power Seat Wiring Diagram for Pontiac Grand Prix SE 1999:

A nca
Back
Down
Driver seat adjuster motor assembly
Driver seat adjuster switch
Entire seat
For- ward
Forward/ back adjuster motor w/ ecb
Front height
Front height adjuster motor w/ ecb
Fuse block
G309 (inside left door sill, forward of left front seat)
Hot at all times
Nca
Rear height
Rear height adjuster motor w/ ecb
S330
S331
Seat circuit breaker 20a
Tan

Driver's Heated Seat Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Driver's Heated Seat Wiring Diagram for Pontiac Grand Prix SE 1999:

Dic/hvac fuse 10a
Driver seat back cushion cover
Driver seat cushion cover
Driver seat heater control module (below right side of driver's seat, mounted on seat track)
Driver seat heater switch
Fuse block
G201 (right side of dash cross beam, behind fuse block)
G309 (inside left door sill, forward of left front seat)
Ground
H seat/lum fuse 15a
Heated seat element
Heating element
Hot at all times
Hot in run
Illum
Interior lights system
Lo/hi in
Lumbar circuit
Nca
On in
Pnk
Pnk b
S206
S303
S330
S332
S375
Sensor
Thermistor

Lumbar Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Lumbar Wiring Diagram for Pontiac Grand Prix SE 1999:

Aft
Down
Driver lumbar horizontal motor
Driver seat lumbar switch
Fore
G309 (inside left door sill, forward of left front seat)
H seat lum fuse 15a
Heated seat circuit
Hot at all times
I/p fuse block
Lumbar horizontal adjuster relay
Pnk
Power seat circuit
Red
S330
S331
Seat circuit breaker 20a
Seat lumbar vertical adjuster relay
Seat lumbar vertical motor
Tan

POWER TOP/SUNROOF

Power Top/Sunroof Wiring Diagrams for Pontiac Grand Prix SE 1999

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List of elements for Power Top/Sunroof Wiring Diagrams for Pontiac Grand Prix SE 1999:

(not used)
(sun roof harn, between sun roof actuator connector c4 & sun roof module connector c1) s399
Battery
Close
Fuse block (behind right side of dash, in glove box opening)
G316 (right front door sill)
Gnd
Hot in run, acc, or rap energized
Open
Pnk
Pos 1
Pos 2
Red
S390
S394
Soft stop
Sun roof actuator (front center of sun roof module)
Sun roof fuse 20a
Sun roof module (front center of sun roof)
Sun roof switch
Vent

POWER WINDOWS

Power Window Wiring Diagram, 2 Door for Pontiac Grand Prix SE 1999

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List of elements for Power Window Wiring Diagram, 2 Door for Pontiac Grand Prix SE 1999:

(pontiac) (chevrolet)
B tan
Chevy
Down
Ecb
Express
Express down module
Fuse block (behind right side of dash)
G309 (left front door sill)
G316 (right front door sill)
Hot in run
Illumination lamp
Interior lights system
Left front
Left front window motor
Left front window switch
Pont
Power window circuit breaker 20a
Right front
Right front window motor
Right front window switch
S303
S310 s318
S504
S604
Tan

Power Window Wiring Diagram, 4 Door for Pontiac Grand Prix SE 1999

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List of elements for Power Window Wiring Diagram, 4 Door for Pontiac Grand Prix SE 1999:

(buick)
(buick, olds)
(buick: body harn, on floor under driver's seat)
(chev, pontiac)
(chev: crossbody harn below right front seat)
(olds: body harn, center of floor behind front seats)
(oldsmobile)
(pontiac: body harn, on floor near center of vehicle)
Buick oldsmobile
Buick, olds chevrolet
Chevrolet
Down
Ecb
Express
Express down module
Fuse block (behind right side of dash, in glove box opening)
Fuse block (behind right side of dash, in right door opening)
Fuse block (on right side of dash)
G309 (left front door sill)
G316 (right front door sill)
Hot in acc, run or during rap
Hot in run
Illumination lamp
Interior lights system
Left front
Left front window motor
Left front window switch
Left rear
Left rear window motor
Left rear window switch
Lock out switch
Pontiac
Power window circuit breaker 20a
Pwr wdo circuit breaker 25a
Pwr window pwr sunroof circuit breaker 30a
Right front
Right front window motor
Right front window switch
Right rear
Right rear window motor
Right rear window switch
S303
S307
S310 s410
S504
S604
Tan

RADIO

Radio Wiring Diagrams, with Amplifier for Pontiac Grand Prix SE 1999

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List of elements for Radio Wiring Diagrams, with Amplifier for Pontiac Grand Prix SE 1999:

(behind dash, right of steering column)
A10
A11
A12
Am/fm
Antenna
B10
B11
B12
Bare
Battery
Cd chg fuse 10a
Cd com
Computer data lines system
Drain
E & c data
Fixed mast antenna
Front window antenna grid
Fuse block
Fuse out
Fused feed
G202
G202 (behind dash, right of steering column)
Ground
Hot at all times
Hot in acc run or rap
Illum
Inflatable restraint steering wheel control module
Interior lights system
Left front door speaker
Left front door upper speaker
Left radio control switches
Left rear speaker
Lf feed
Lf lev
Lf low
Lf rtn
Low frequency audio amplifier (center of rear window panel)
Low rtn
Lr low
Lr rtn
Lr spk feed
Lr sub feed
Lr sub rtn
Lt cd sig
Multi-disc cd player
Mute
Nca
Nca a
Nca b
Pnk
Preset
Radio
Radio amp fuse 20a
Radio antenna module (above headliner rear windshield area)
Radio fuse 10a
Radio on
Radio, hvac fuse 15a
Rear window antenna grid
Red
Rf feed
Rf low
Rf spkr
Right front door speaker
Right front door upper speaker
Right radio control switches
Right rear speaker
Rr feed
Rr low
Rr return
Rr sub feed
Rt cd sig
S202
S239
S418
Seek dn
Seek up
Shield
Source
St whl in
Str whl ctrl fuse 10a
Tan
Tape audio
Tape left
Tape right
Vol dn
Vol up
W/ fixed mast antenna
W/ rear window antenna

Radio Wiring Diagrams, without Amplifier for Pontiac Grand Prix SE 1999

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List of elements for Radio Wiring Diagrams, without Amplifier for Pontiac Grand Prix SE 1999:

(behind dash, right of steering column)
Am/fm
Antenna
Bare
Battery
Cd chg fuse 10a
Cd com
Computer data lines system
Drain
E & c data
Fixed mast antenna
Front window antenna grid
Fuse block
Fuse out
Fused feed
G202
G202 (behind dash, right of steering column)
Ground
Hot at all times
Hot in acc run or rap
Illum
Inflatable restraint steering wheel control module
Interior lights system
Left front door speaker
Left front door upper speaker
Left radio control switches
Left rear speaker
Lf +
Lf -
Lr +
Lr -
Lt cd sig
Multi-disc cd player
Mute
Nca
Nca a
Nca b
Preset
Radio
Radio antenna module (above headliner rear windshield area)
Radio fuse 10a
Radio on
Radio, hvac fuse 15a
Rear window antenna grid
Red
Rf +
Rf -
Right front door speaker
Right front door upper speaker
Right radio control switches
Right rear speaker
Rr +
Rr -
Rt cd sig
S202
S239
S418
Seek dn
Seek up
Source
St whl in
Str whl ctrl fuse 10a
Tan
Tape audio
Tape left
Tape right
Vol dn
Vol up
W/ fixed mast antenna
W/ rear window antenna

SHIFT INTERLOCKS

Shift Interlock Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Shift Interlock Wiring Diagram for Pontiac Grand Prix SE 1999:

A16
Automatic tranmission shift lock control actuator (btsi) (on underside of steering column)
Automatic transaxle control (btsi) (center of console assembly)
Btsi fuse 10a
Btsi solenoid
C201
Fuse block
G129 (transaxle stud)
G201 (right side of dash cross beam, behind fuse block)
Hot in off, run, bulb test & start
Park lock solenoid
Park position switch
Pnk
Pnk a
S105
S213
S264
S376
Steering column electric park lock (in steering column, near ignition key cylinder)
Stoplamp switch (right side of brake pedal bracket)
Transaxle range switch (left side of engine compt)
Underhood accessory wiring junction block (mounted to right strut tower)
W/ cloumn shift
W/ floor shift
W/console only

STARTING/CHARGING

Charging Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Charging Wiring Diagram for Pontiac Grand Prix SE 1999:

(not used) a
B12
Battery
Charge ind
Cluster minifuse 10a
Computer data lines
Electronic brake traction control module (ebtcm) (left side of engine compt)
Fuse block (behind right side of dash)
Fusible link (10 ga- rust)
G101 (at base of battery)
G129 (on transaxle stud)
Gen minifuse 10a
Gen. term. f monitor
Gen. term. l output
Hot in run, bulb test or start
Instrument cluster
L generator
P b+
Pnk
Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly)
Red
Remote battery stud
Ser. data class 2
Solid state
Splice pack (s205) (below dash, right of steering column)
Starter solenoid
Underhood accessory wiring junction block (on right strut tower)

Starting Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Starting Wiring Diagram for Pontiac Grand Prix SE 1999:

Accy
B12
Battery
Bulb test
Crank maxifuse 40a
Crank relay
Crank relay control
Crank sig
Crank signal fuse 10a
F10
Fuse block (behind right side of dash)
G101 (at base of battery)
G129 (on transaxle stud)
Hold- in coil
Hot at all times
Ign main 1 maxifuse 40a
Ignition switch
Lock
Nca
Off
Pcm- bcm fuse 10a
Pnk
Power distribution (fuse links)
Powertrain control module (pcm) (left side of engine compt, in air cleaner assembly)
Pull- in coil
Red
Red d5
Remote battery stud
Run
S228
S234
Start
Starter motor
Starter solenoid
Transaxle range switch (on transaxle)
Underhood accessory wiring junction block (on right strut tower)

SUPPLEMENTAL RESTRAINTS

Supplemental Restraint Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Supplemental Restraint Wiring Diagram for Pontiac Grand Prix SE 1999:

(driver's seat harn, below driver's seat)
(i/p harn, behind right side of instrument cluster
A10
A11
A12
A13
A14
A15
A16
A17
A18
Air bag indicator
Bar
Body control module (bcm) (behind left side of dash)
Computer data lines system
Connector (dlc) (under dash, right of steering column)
Data link
Driver high
Driver low
Fuse block (behind right side of dash)
G202 (base of steering column)
G309 (inside door sill)
Ground
Hot in run, bulb test or start
I/p-ign fuse 10a
Ign pos volt
Inflatable restraint i/p module (upper right side of dash)
Inflatable restraint sensing and diagnostic module (sdm) (below carpet, under right front seat)
Inflatable restraint steering wheel module (on front of steering wheel)
Inflatable restraint steering wheel module coil
Instrument cluster
Nca
Pass high
Pass low
Pnk
S209
S218 (i/p harn)
S226 (i/p harn, behind right side of instrument cluster)
S330
Seat belt sig
Seat belt switch
Serial data
Shorting
Shorting bar
Sir fuse 15a
Warning ind

TRANSMISSION

3.1L

3.1L VIN M, A/T Wiring Diagram, 4T60-E for Pontiac Grand Prix SE 1999

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List of elements for 3.1L VIN M, A/T Wiring Diagram, 4T60-E for Pontiac Grand Prix SE 1999:

(engine harn, approx 4 cm from breakout to ebtcm module) s131
(fuel inj harn, approx 2 cm from breakout to fuel inj 3) s121
1-2 shift sol
2-3 shift sol
5v reference a
A12
Automatic transaxle (4t60-e)
Automatic transaxle fluid temperature sensor
B10
Battery in
Body control module, driver information display, electronic brake control lamp driver module & head-up display dimmer switch
C10
Class ii data
D10
D11
Data link connector (partial) (below dash, right of steering column)
Ecm fuse 10a
Ecm sense fuse 10a
Ect sensor in
Engine coolant temperature sensor (below throttle body)
F12
Fuse block (right side of dash)
G129 (left side of engine on transaxle stud)
G129 (lower left side of engine on transaxle stud)
Hot at all times
Hot in run, bulb test or start
I/p ign fuse 10a
Ign main relay
Ignition in
Instrument cluster
Malfunction indicator lamp
Manifold absolute pressure sensor
Mil ctrl
Pcm ground
Pnk
Powertrain control module (in engine air cleaner assembly)
Red
S105
S106
S209
S218 (dash harn, approx 4 cm from breakout to blower motor)
Sensor return
Stop lamp switch
Tan
Tcc fuse 10a
Tcc pwm sol
Tcc sol
Tcc/ brake switch
Tcc/brake sw in
Tft sensor in
Throttle position sensor
Tp sensor in
Tp sensor return
Tr sw a
Tr sw b
Tr sw c
Tr sw in-a
Tr sw in-b
Tr sw in-c
Tr sw in-p
Tr sw prty
Transaxle range switch (left side of engine compt on transaxle)
Uart data
Underhood accessory wiring j/b
Underhood accessory wiring j/b (right front strut tower)
Vehicle speed sensor (lower right rear of engine compt, on transaxle)
Vss hi in
Vss lo in

3.8L

3.8L VIN 1, A/T Wiring Diagram, 4T65-E for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN 1, A/T Wiring Diagram, 4T65-E for Pontiac Grand Prix SE 1999:

(behind fuse block) g201
(dash harn, approx 30 cm from breakout to dlc)
(engine harn, approx 4 cm from breakout to ebtcm module) s131
1-2 shift sol
2-3 shift sol
5v reference a
A/t iss sensor hi
A/t iss sensor lo
A12
Automatic transaxle (4t65-e)
Automatic transaxle fluid pressure manual valve position switch
Automatic transaxle fluid temperature sensor
Automatic transaxle input shaft speed sensor
B10
Battery in
Body control module, driver information display, hud dimmer switch & trip calculator
C10
Class ii data
D10
D11
Data link connector (partial) (below dash, right of steering column)
Ecm fuse 10a
Ecm sense fuse 10a
Ect sensor in
Ect sensor return
Engine coolant temperature sensor (below throttle body)
F12
Fuse block (right side of dash)
G129 (left side of engine on transaxle stud)
G129 (lower left side of engine on transaxle stud)
Hot at all times
Hot in run, bulb test or start
I/p ign fuse 10a
Ign main relay
Ignition in
Instrument cluster
Malfunction indicator lamp
Mil ctrl
Nca
Pc sol hi
Pc sol lo
Pcm ground
Perf shift indicator
Perform shift in
Performance shift switch (3.8l vin 1- supercharged)
Pnk
Powertrain control module (in engine air cleaner assembly)
Pressure control sol
Red
Rev
S105
S106
S209
S211
S218 (dash harn, approx 2 cm from breakout to blower motor)
S236
Stop lamp switch
Tan
Tcc fuse 10a
Tcc pwm sol
Tcc release
Tcc release in
Tcc/ brake switch
Tcc/brake sw in
Tft sensor in
Tft sensor return
Throttle position sensor
Tp sensor in
Tp sensor return
Tr sw a
Tr sw b
Tr sw c
Tr sw in-a
Tr sw in-b
Tr sw in-c
Tr sw in-p
Tr sw prty
Trans range a in
Trans range b in
Trans range c in
Transaxle range switch (left side of engine compt on transaxle)
Uart data
Underhood accessory wiring j/b
Underhood accessory wiring j/b (right front strut tower)
Vehicle speed sensor (lower right rear of engine compt, end of transaxle)
Vss hi in
Vss lo in

3.8L VIN K, A/T Wiring Diagram, 4T65-E for Pontiac Grand Prix SE 1999

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List of elements for 3.8L VIN K, A/T Wiring Diagram, 4T65-E for Pontiac Grand Prix SE 1999:

(behind fuse block) g201
(dash harn, approx 30 cm from breakout to dlc)
(engine harn, approx 4 cm from breakout to ebtcm module) s131
1-2 shift sol
2-3 shift sol
5v reference a
A/t iss sensor hi
A/t iss sensor lo
A12
Automatic transaxle (4t65-e)
Automatic transaxle fluid pressure manual valve position switch
Automatic transaxle fluid temperature sensor
Automatic transaxle input shaft speed sensor
B10
Battery in
Body control module, driver information display, hud dimmer switch & trip calculator
C10
Class ii data
D10
D11
Data link connector (partial) (below dash, right of steering column)
Ecm fuse 10a
Ecm sense fuse 10a
Ect sensor in
Ect sensor return
Engine coolant temperature sensor (below throttle body)
F12
Fuse block (right side of dash)
G129 (left side of engine on transaxle stud)
G129 (lower left side of engine on transaxle stud)
Hot at all times
Hot in run, bulb test or start
I/p ign fuse 10a
Ign main relay
Ignition in
Instrument cluster
Malfunction indicator lamp
Mil ctrl
Nca
Pc sol hi
Pc sol lo
Pcm ground
Perf shift indicator
Perform shift in
Performance shift switch (3.8l vin 1- supercharged)
Pnk
Powertrain control module (in engine air cleaner assembly)
Pressure control sol
Red
Rev
S105
S106
S209
S211
S218 (dash harn, approx 2 cm from breakout to blower motor)
S236
Stop lamp switch
Tan
Tcc fuse 10a
Tcc pwm sol
Tcc release
Tcc release in
Tcc/ brake switch
Tcc/brake sw in
Tft sensor in
Tft sensor return
Throttle position sensor
Tp sensor in
Tp sensor return
Tr sw a
Tr sw b
Tr sw c
Tr sw in-a
Tr sw in-b
Tr sw in-c
Tr sw in-p
Tr sw prty
Trans range a in
Trans range b in
Trans range c in
Transaxle range switch (left side of engine compt on transaxle)
Uart data
Underhood accessory wiring j/b
Underhood accessory wiring j/b (right front strut tower)
Vehicle speed sensor (lower right rear of engine compt, end of transaxle)
Vss hi in
Vss lo in

TRUNK, TAILGATE, FUEL DOOR

Trunk, Tailgate, Fuel Door Wiring Diagrams for Pontiac Grand Prix SE 1999

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List of elements for Trunk, Tailgate, Fuel Door Wiring Diagrams for Pontiac Grand Prix SE 1999:

B/u lamp fuse 10a
Body control module (bcm) (left of steering column)
C1 c
C1 e4
G316 (right front door sill)
Hot at all times
Park input
Park/ neutral position switch (left side of engine compt, on transaxle)
Rear compartment lid lock release actuator solenoid (mounted to rear compt lid, near latch)
Rear compartment lid release relay (below left side of dash, mounted to bcm mounting bracket)
Rear compartment lid release switch
Remote control door lock reciever (rcdlr) (left side of dash, behind driver information center)
S416
Underhood accessory wiring junction block (mounted to right front strut tower)

WARNING SYSTEMS

Warning System Wiring Diagrams for Pontiac Grand Prix SE 1999

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List of elements for Warning System Wiring Diagrams for Pontiac Grand Prix SE 1999:

(i/p harn, approx 4 cm from from headlamp switch break- out)
(i/p harn, approx 7 cm from driver's information display/trip calculator breakout) s289
(i/p harn, approx at the driver's information display/trip calculator breakout) s290
Accessory 1
Auxiliary chime
Base
Battery
Body control module (bcm) (below left side of dash, left of steering column)
C12
C13
C14
C15
C201
D12
Driver information display (did)
Driver's door ajar input
Exterior lights system
Fasten belts output
Fasten belts warning ind
Fuse block
G201 (right side of dash cross beam, behind fuse block)
G309 (inside left front door sill, forward of left front seat)
Ground
Hazard lamp & turn signal lamp flasher (below left side of dash)
Head
Head- lights system
Headlamp switch
Hot at all times
Hot in accy or run
Hot in run, bulb test or start
I/p-ign fuse 10a
Ignition 1
Ignition key alarm switch
Instru- ment cluster
Instrument cluster system
Int lamp fuse 10a
Key in ignition input
Left front door lock (ajar indicator switch)
Left turn input
Lights off input
Mall fuse 10a
Mall pgm fuse 10a
Mall program
Nca
Off
Park
Park lp fuse 20a
Pnk
Powertrain control module (pcm) (left front side of engine compt, in side air cleaner)
Right turn input
S209
S226 (i/p harn, approx 11 cm from blower motor resistor/ control module breakout)
S282
S285
S303
S504
Seat belt switch (part of driver's seat belt assembly)
Seat belt switch input
Tan
Trip calculator
Turn signal switch
Underhood accessory wiring junction block
Up level
Vehicle speed input

WIPER/WASHER

Wiper/Washer Wiring Diagram for Pontiac Grand Prix SE 1999

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List of elements for Wiper/Washer Wiring Diagram for Pontiac Grand Prix SE 1999:

1998-99
A12
F12
Fuse block (behind right side of dash)
G101 (right side of front end upper tie bar)
G102 (at base of left strut tower)
G108 (left side of front end upper tie bar)
Hot in acc or run
Mist
Off
Pulse
Red
S123
S124
S125
S249
Underhood accessory wiring junction block (on right strut tower)
Underhood electrical center (right strut tower)
Washer switch
Windshield washer pump
Windshield washer pump motor
Windshield wiper motor
Windshield wiper/washer switch
Wiper fuse 25a
Wiper motor controller
Wiper switch