GMC Jimmy V1500 1991 - ELECTRICAL COMPONENT LOCATOR 1991 ELECTRICAL COMPONENT LOCATIONS General Motors Corp. - Electrical Components

GMC Jimmy V1500 1991 - BUZZERS, RELAYS & TIMERS

GMC Jimmy V1500 1991 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C-Heater Blower Relay	On evaporator case, on right side of firewall.
Auxiliary Cooling Fan Relay	On left front inner fender well.
Cold Advance Control Relay (6.2L)	On right side of firewall.
Fuel Pump Relay
Engine Compartment	On right side of firewall, on relay bracket. See Fig. 1 .
Engine	On right side of firewall, on relay bracket. See Fig. 2 .
Hazard Flasher Relay	On convenience center.
Horn Relay	Behind dash, left of steering column.
Power Door Lock Relay	On right side of steering column support.
Turn Signal Flasher Relay	Under left side of dash, on fuse block.

GMC Jimmy V1500 1991 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Circuit Breakers
Power Window	Part of window motor.
Convenience Center	Behind dash, right of steering column.
Fuse Block	Under left side of dash. See Fig. 1 .
Fusible Link
Auxiliary Battery Relay (Red)	At battery junction block, on right side of firewall.
Charging System (Red)	In wiring harness to alternator (gas).
Charging System (Rust)	In wiring harness to alternator (diesel).
Glow Plug Controller (Red)	At starter solenoid.

GMC Jimmy V1500 1991 CONTROL UNITS LOCATION

Component	Location
CHECK ENGINE Light Driver Module (6.2L)	Under left side of dash, taped to harness.
Cruise Control Module	Mounted on left side of steering column support.
Electronic Control Module (ECM)
Engine Compartment	Under right side of dash. See Fig. 1 .
Engine	Under right side of dash. See Fig. 2 .
Elec. Spark Control (ESC) Module
Engine Compartment	On top right side of engine. See Fig. 1 .
Engine	On top right side of engine. See Fig. 2 .
Fuel Pump Module (5.7L H/D)	Under left side of dash on brake pedal support. See Fig. 1 .
Glow Plug Controller (6.2L)	On left rear of intake manifold.
Low Coolant Warning Module	Behind left side of dash.
Powertrain Control Module (PCM)	Under left side of dash.
Rear Wheel (ABS) Controller	Below brake master cylinder.
Windshield Wiper Delay Module	On bottom of steering column.

GMC Jimmy V1500 1991 SENDING UNITS & SENSORS LOCATION

Component	Location
Coolant Temperature Sender (6.2L)	On front side of left cylinder head. See Fig. 3 .
Coolant Temperature Sensor (5.0L & 5.7L)
Engine Compartment	In right front corner of intake manifold. See Fig. 1 .
Engine	In right front corner of intake manifold. See Fig. 2 .
Input Speed Sensor	On left side of transmission. See Fig. 4 .
Knock Sensor
Engine Compartment	On lower right side of engine block, near starter. See Fig. 1 .
Engine	On lower right side of engine block, near starter. See Fig. 2 .
Manifold Absolute Pressure (MAP) Sensor
Diesel	On left side of firewall.
Gas	On right side of intake manifold. See Fig. 1 .
Oil Pressure Sending Unit/Switch	On left rear of block. See Fig. 1 .
Output Speed Sensor	On left side of transmission. See Fig. 4 .
Throttle Position Sensor (TPS)
5.0L & 5.7L
Engine Compartment	On throttle body. See Fig. 1 .
Engine	On throttle body. See Fig. 2 .
6.2L	On fuel injection pump.
Vehicle Speed Sensor (VSS)
2WD	Mounted on transmission tail shaft. See Fig. 1 .
4WD	Mounted on transfer case tail shaft. See Fig. 4 .

GMC Jimmy V1500 1991 MOTORS LOCATION

Component	Location
A/C-Heater Blower Motor	On right side of firewall, in engine compartment.
Auxiliary Cooling Fan Motor	In engine compartment, below radiator support.
Idle Air Control (IAC) Motor
Engine Compartment	On right side of throttle body. See Fig. 1 .
Engine	On right side of throttle body. See Fig. 2 .
Windshield Wiper Motor	On left side of firewall.

GMC Jimmy V1500 1991 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Cold Advance Control (CAC) Solenoid	On injection pump, under housing cover. See Fig. 5 .
EGR Dump Valve Solenoid	On top of engine, on bracket over left valve cover. See Fig. 3 .
EGR Vacuum Solenoid
5.0L & 5.7L
Engine Compartment	On top of engine, on bracket over right valve cover. See Fig. 1 .
Engine	On top of engine, on bracket over right valve cover. See Fig. 2 .
6.2L	On top of engine, on bracket over left valve cover. See Fig. 3 .
Exhaust Pressure Regulator (EPR) Solenoid (6.2L)	On top of engine, on bracket over left valve cover. See Fig. 3 .
Fast Idle Solenoid (6.2L)	On injection pump, under housing cover. See Fig. 5 .
Fuel Shut Off Solenoid (6.2L)	On left front of engine. See Fig. 5 .
Torque Conv. Clutch (TCC) Solenoid	On left rear of automatic transmission. See Fig. 1 .

GMC Jimmy V1500 1991 SWITCHES LOCATION

Component	Location
A/C Pressure Cycling Switch	On accumulator.
Auxiliary Cooling Fan Temp. Switch	On right side of cylinder block.
Backup Light Switch (A/T)	At bottom of steering column.
Brake/Stoplight Switch	On brake pedal support bracket.
Brake Warning Switch	In hydraulic brake combination valve.
Coolant Temperature Switch (6.2L)	On front center of engine. See Fig. 5 .
Clutch Switch (Cruise)	On clutch pedal bracket.
Fast/Cold Idle Switch (6.2L)	On right rear of engine block. See Fig. 5 .
Fuel Pump Oil Pressure Switch	On top rear of engine.
TCC Governor Pressure Switch	In transmission.

GMC Jimmy V1500 1991 MISCELLANEOUS LOCATION

Component	Location
A/C Diode	At front of A/C compressor.
A/C-Heater Blower Motor
Noise Capacitor	In blower motor power feed line.
Resistor	On evaporator housing, next to blower motor.
ALDL Diagnostic Connector	Under left side of dash. See Fig. 1 .
Digital Ratio Adapter	Integral to instrument cluster.
Engine Block Heater (Opt.)	On left rear of engine, below exhaust manifold.
Fuel Heater/Water Detector (6.2L)	On firewall, in engine compartment. See Fig. 5 .
Fuel Pump Prime/Test Connector	On right side of firewall. See Fig. 1 .