AIR CONDITIONING – GMC Sierra Classic 1500 2007 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for GMC Sierra Classic 1500 2007

List of elements for Automatic A/C Wiring Diagram (1 of 3) for GMC Sierra Classic 1500 2007:

• (diesel)
• (gasoline)
• 5v ref
• A/c comp cl rly ctrl
• A/c comp fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay
• A/c ind
• A/c low pressure switch (right side of accumulator)
• A/c on
• A/c recirc
• A/c ref pre sens sig
• A/c refrigerant pressure sensor (on high pressure hose)
• A10
• A11
• A12
• A5 c1
• Air temperature sensor (lower left) (lower left floor duct assembly)
• Air temperature sensor (lower right) (bottom of hvac module)
• Air temperature sensor (upper left) (below dash trim panel)
• Air temperature sensor (upper right) (below dash trim panel)
• Amb air temp sig
• Ambient air temperature sensor (in right front bumper filler assembly)
• Auto
• B c5
• B(+)
• B10
• B11
• B12
• Blower motor (right side of dash)
• Blower motor control processor (behind right side of dash)
• Blower speed ctrl
• Blwr fuse 40a
• C4 e
• C5 c1
• Class 2 ser data
• Class 2 serial data
• D red
• Fan dn
• Fan up
• Frt def
• G104 (on left rear of engine block)
• G200 (near right "a" pillar)
• G203 (near left "a" pillar)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Hvac 1 fuse 10a
• Hvac control module (behind center of dash)
• Hvac/ ecas fuse 10a
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p relay block (near left kick panel)
• Ign 3
• Ign e fuse 10a
• Inside air temp sig
• Inside air temperature sensor assembly (in headliner above driver)
• Inst lamp dim ctrl
• Interior lights system
• Left temp control
• Lo lt air temp sig
• Lo press sens sig
• Lo rt air temp sig
• Logic
• Low ref
• Lt temp door ctrl
• Lt tmp door po sig
• Mode
• Mode door ctrl
• Mode door po sig
• Off
• Powertrain control module or engine control module (diesel) (left front of engine compt)
• Recir
• Recir door ctrl
• Recirc door po sig
• Red
• Right i/p fuse block (lower right side of dash)
• Right temp control
• Rt temp door ctrl
• Rt tmp door po sig
• S102 (in engine harness)
• S218 (in i/p harn)
• S345 (in headliner harness)
• Sp205 (in i/p harn)
• Speed ctrl
• Tan
• Temp sen assy ctrl
• Underhood fuse block (left side of engine compt)
• Up lt air temp sig
• Up rt air temp sig

Automatic A/C Wiring Diagram (2 of 3) for GMC Sierra Classic 1500 2007

List of elements for Automatic A/C Wiring Diagram (2 of 3) for GMC Sierra Classic 1500 2007:

• Air temperature actuator (left) (bottom of hvac module)
• Air temperature actuator (right) (top of hvac module)
• Ambient light sens lo ref
• Ambient light sens sig
• Ambient light sensor
• Ambient light/sunload sensor assembly (top center of dash)
• B12
• Body control module (lower left side of dash, below steering column)
• Class 2 serial data
• Drvr sunload sensor sig
• I/p junction block (lower right side of dash)
• Logic
• Mode actuator (left side of hvac module)
• Pass sunload sensor sig
• Recirculation actuator (top center of hvac module)
• Sunload sensor (left)
• Sunload sensor (right)
• Tan

Automatic A/C Wiring Diagram (3 of 3) for GMC Sierra Classic 1500 2007

List of elements for Automatic A/C Wiring Diagram (3 of 3) for GMC Sierra Classic 1500 2007:

• (in forward lamp harness) s166
• 10 series
• Cool/ fan relay 1
• Cool/ fan relay 2
• Cool/ fan relay 3
• Cool/fan fuse 10a
• Cool/fan fuse 40a
• Engine coolant temperature (ect) sensor (on left cylinder head)
• G115 (on lower right radiator support)
• Hot at all times
• Left cooling fan
• Powertrain control module (pcm)
• Right cooling fan
• Underhood cooling fan fuse block (left side of engine compt)

Compressor Wiring Diagram for GMC Sierra Classic 1500 2007

List of elements for Compressor Wiring Diagram for GMC Sierra Classic 1500 2007:

• (diesel)
• (gasoline)
• 5v ref
• A/c comp cl rly ctrl
• A/c comp fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay
• A/c low pressure switch (right side of accumulator)
• A/c on switch
• A/c ref pre sens sig
• A/c refrigerant pressure sensor (on high pressure hose)
• A12
• B11
• Class 2 ser data
• Class 2 serial data
• G104 (on left rear of engine block)
• Hot at all times
• Hot in run or start
• Hvac control module (behind center of dash)
• Ign e fuse 10a
• Lo press sens sig
• Logic
• Low ref
• Powertrain control module or engine control module (diesel) (left front of engine compt)
• Sp205 (in i/p harn)
• Underhood fuse block (left side of engine compartment)

Heater Wiring Diagram for GMC Sierra Classic 1500 2007

List of elements for Heater Wiring Diagram for GMC Sierra Classic 1500 2007:

• (left side of engine compt)
• (right side of engine compt)
• Aux htr pump fuse 10a
• Aux htr pump relay
• Auxiliary water pump
• B c5
• Blower fuse 40a
• Blower motor (under right side of dash)
• Blower motor control switch
• Blower motor relay
• Blower motor resistor assembly (on hvac module, near blower motor)
• Computer data lines system
• G104 (on left rear of engine block)
• G200 (near right "a" pillar)
• Hot at all times
• Hot in run
• Htr a/c fuse 30a
• Hvac control module (behind center of dash)
• Hybrid control module (hcm)
• Hybrid only
• I/p fuse block (lower left side of dash)
• I/p junction fuse block (lower right side of dash)
• Ign b fuse 40a
• Pnk
• Power distribution system
• Pwr maint fuse 10a
• Pwr maint relay
• Red
• S108
• S113
• S114
• S115
• Secondary underhood fuse block (left side of engine compt) (hybrid)
• Stud #1 fuse 40a
• Tan
• Underhood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (1 of 3) for GMC Sierra Classic 1500 2007

List of elements for Manual A/C Wiring Diagram (1 of 3) for GMC Sierra Classic 1500 2007:

• (diesel)
• (gasoline)
• 5v ref
• A/c comp cl rly ctrl
• A/c comp fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay
• A/c low pressure switch (right side of accumulator)
• A/c on indic
• A/c on switch
• A/c ref pre sens sig
• A/c refrigerant pressure sensor (on high pressure hose)
• A10
• A11
• A12
• A5 c1
• B c5
• B(+)
• B10
• B11
• B12
• Blower fuse 40a
• Blower motor (under right side of dash)
• Blower motor control switch
• Blower motor relay
• Blower motor resistor assembly (on hvac module, near blower motor)
• Class 2 ser data
• Class 2 serial data
• G104 (on left rear of engine block)
• G200 (near right "a" pillar)
• G203 (near left "a" pillar)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Htr a/c fuse 30a
• Hvac 1 fuse 10a
• Hvac control module (behind center of dash)
• Hvac/ ecas fuse 10a
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p relay block (left side of dash)
• Ign 3
• Ign e fuse 10a
• Indic
• Inst lamp dim ctrl
• Interior lights system
• Left temp control
• Lo press sens sig
• Logic
• Low ref
• Lt temp door ctrl
• Lt tmp door po sig
• Mode control
• Mode door ctrl
• Mode door po sig
• Off blow mt ctrl
• Powertrain control module or engine control module (diesel) (left front of engine compt)
• Recir door ctrl
• Recirc
• Recirc switch
• Red
• Right temp control
• Rt temp door ctrl
• Rt tmp door po sig
• S102 (in engine harness)
• Sp205 (in i/p harn)
• Tan
• Underhood fuse block (left side of engine compartment)

Manual A/C Wiring Diagram (2 of 3) for GMC Sierra Classic 1500 2007

List of elements for Manual A/C Wiring Diagram (2 of 3) for GMC Sierra Classic 1500 2007:

• (not used)
• Air temperature actuator (right) (top of hvac module)
• B12
• Body control module (lower left side of dash, below steering column)
• Class 2 serial data
• G200 (near right "a" pillar)
• I/p junction block (lower right side of dash)
• Left air temperature actuator (bottom of hvac module)
• Logic
• Mode actuator (left side of hvac module)
• Recirculation actuator (top center of hvac module)
• Tan

Manual A/C Wiring Diagram (3 of 3) for GMC Sierra Classic 1500 2007

List of elements for Manual A/C Wiring Diagram (3 of 3) for GMC Sierra Classic 1500 2007:

• (in forward lamp harness) s166
• 10 series
• Cool/ fan relay 1
• Cool/ fan relay 2
• Cool/ fan relay 3
• Cool/fan fuse 10a
• Cool/fan fuse 40a
• Engine coolant temperature (ect) sensor (on left cylinder head)
• G115 (on lower right radiator support)
• Hot at all times
• Left cooling fan
• Powertrain control module (pcm)
• Right cooling fan
• Underhood cooling fan fuse block (left side of engine compt)