AIR CONDITIONING
Automatic A/C Wiring Diagram (1 of 3) for GMC Sierra 3500 HD 2008
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Automotive Electricians Portal FZCO
Automotive Electricians Portal FZCO List of elements for Automatic A/C Wiring Diagram (1 of 3) for GMC Sierra 3500 HD 2008:
- (except 6.6l: in engine harness, 23 cm from map sensor breakout)
- (in i/p harness, 13 cm from radio connector breakout) j203
- (left side of headliner) front inside air temperature sensor
- (lower left side of dash) left i/p junction block
- (lower right side of hvac module) blower motor
- (lower right side of hvac module) blower motor control module
- (on right front corner of hvac module) g200
- (under upper left side of dash) upper left air temperature sensor
- (under upper right side of dash) upper right air temperature sensor
- 5v ref
- A/c ind
- A/c low pressure switch (on right side of a/c accumulator)
- A/c on
- Air temp
- Air tmp
- Air tmp sig
- Amb air tmp
- Ambient air temperature sensor (on left side of radiator support)
- Ambient light/ sunload sensor assembly (top center of dash)
- Auto
- B(+)
- Batt pos volt
- Blwr spd
- Colnt lvl
- Computer data lines system
- Defogger system
- Dfrst val
- Engine coolant level switch (6.6l) (on bottom of surge tank)
- Fan dn
- Fan up
- Fresh air
- Frnt dfg
- Frt def
- Fsh air
- G103 (except 4.3l) (on front of right cylinder head)
- G106 (4.3l) (right rear of engine)
- G200 (on right front corner of hvac module)
- G201 (upper left corner of dash)
- Gmlan l
- Ground
- Hvac control module
- Ign 3
- J106
- J206 (in i/p harness, 14.5 cm from x200 breakout)
- J328 (in headliner harness, 5 cm from front inside air temperature sensor breakout)
- L air tmp
- Left sunload sensor
- Left temp control
- Lf sunld
- Logic
- Low ref
- Lw prss
- Mode ctrl
- Mode dn
- Mode up
- Mtr spd ctrl
- Off
- Power distribution system
- R air tmp
- Rear defog
- Rear dfg
- Recir
- Recir ctrl
- Recirc
- Recirc pos
- Red
- Rer def
- Rf sunld
- Right sunload sensor
- Right temp control
- Tan
Automatic A/C Wiring Diagram (2 of 3) for GMC Sierra 3500 HD 2008
List of elements for Automatic A/C Wiring Diagram (2 of 3) for GMC Sierra 3500 HD 2008:
- (left front of engine compt, near fan shroud) engine control module (ecm)
- (lower left side of dash) body control module (bcm)
- (on front of a/c compressor) a/c compressor clutch
- (top left rear of engine) (4.3l) g107
- 4a1
- 4a2
- 4a3
- 4a4
- 4a5
- 4a6
- 4b2
- 4b3
- 4b5
- 4b6
- 6.6l except 6.6l & 4.3l 4.3l
- A/c cmprsr fuse 17 (except 6.6l) fuse 18 (6.6l) 10a
- A/c comp- ressor clutch relay
- A4 x5
- E x4
- Engine coolant temperature (ect) sensor (4.3l: left side of dash) (except 4.3l & 6.6l: on top of engine) (6.6l: top front center of engine)
- Except 6.6l & 6.0l (vin k)
- G102 (except 4.3l & 6.6l) (on lower left front of engine)
- Hot at all times
- Hvac batt fuse 39 10a
- Hvac blwr fuse 70 40a
- Hvac ign fuse 57 (except 6.6l) fuse 55 (6.6l) 10a
- J105
- Pnk
- Red
- Right i/p junction block (in right end of dash)
- Run/ crank relay
- Tan
- Under- hood fuse block (left side of engine compt)
Automatic A/C Wiring Diagram (3 of 3) for GMC Sierra 3500 HD 2008
List of elements for Automatic A/C Wiring Diagram (3 of 3) for GMC Sierra 3500 HD 2008:
- (left side of hvac module) lower left air temperature sensor
- (lower left of hvac module) lower right air temperature sensor
- (near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
- (on lower right radiator support) g101
- 87a
- Cooling fan diode 1
- Cooling fan diode 2
- Except 6.6l & 6.0l (vin k)
- Fan cntrl relay
- Fan hi relay 1
- Fan lo relay
- Fan-1 fuse 60 40a
- Fan-2 fuse 62 40a
- G100 (on lower left radiator support)
- Hot at all times
- J100
- J101
- Left air temperature actuator (bottom left of hvac module)
- Left engine cooling fan (left front of engine compt)
- Logic
- Mode actuator (left end of hvac module)
- Pwr/ trn relay
- Recirculation actuator (top right side of hvac module)
- Right air temperature actuator (top middle of hvac module)
- Right engine cooling fan (right front of engine compt)
- Tan
- Under- hood fuse block (left side of engine compt)
Compressor Wiring Diagram for GMC Sierra 3500 HD 2008
List of elements for Compressor Wiring Diagram for GMC Sierra 3500 HD 2008:
- (4.3l: top left rear of engine) (6.6l: on front of right cylinder head) (except 4.3l & 6.6l: on lower left front of engine)
- (on front of a/c compressor) a/c compressor clutch
- 4.3l
- 6.6l
- A/c cmprsr fuse 17 (except 6.6l) fuse 16 (6.6l) 10a
- A/c cmprsr relay
- A/c ind
- A/c low pressure switch (on right side of a/c accumulator)
- A/c on
- A/c refrigerant pressure sensor (near compressor, on a/c high pressure hose)
- Automatic a/c
- B(+)
- Computer data lines system
- Engine control module (ecm) (left front of engine compt, near fan shroud)
- Except 4.3l & 6.6l
- G103 (except 4.3l) (on front of right cylinder head)
- G106 (4.3l) (right rear of engine)
- G107 (4.3l) g103 (6.6l) g102 (except 4.3l & 6.6l)
- G200 (on right front corner of hvac module)
- Gmlan l
- Ground
- Hot at all times
- Hvac batt fuse 39 (except 6.6l) fuse 36 (6.6l) 10a
- Hvac control module
- J105
- J106
- J203
- Logic
- Lw prss
- Manual a/c
- Tan
- Under- hood fuse block (left side of engine compt)
Manual A/C Wiring Diagram (1 of 3) for GMC Sierra 3500 HD 2008
List of elements for Manual A/C Wiring Diagram (1 of 3) for GMC Sierra 3500 HD 2008:
- (4.3l) g107
- (4.3l: top left rear of engine) (6.6l: on front of right cylinder head) (except 6.6l & 4.3l: on lower left front of engine)
- (6.6l) g103
- (except 6.6l: in engine harness, 23 cm from map sensor breakout)
- (left front of engine compt, near fan shroud) engine control module (ecm)
- (lower right side of hvac module) blower motor
- (lower right side of hvac module) blower motor control module
- 4.3l
- 5v ref
- 6.6l
- A/c cmprsr fuse 17 (except 6.6l) fuse 18 (6.6l) 10a
- A/c comp- ressor clutch relay
- A/c ind
- A/c low pressure switch (on right side of a/c accumulator)
- A/c on
- B(+)
- Batt pos volt
- Blower motor control switch
- Blwr spd
- Colnt lvl
- Computer data lines system
- Defogger system
- Dfrst val
- Engine coolant level switch (6.6l) (on bottom of surge tank)
- Engine coolant temperature (ect) sensor (4.3l: left side of dash) (except 4.3l & 6.6l: on top of engine) (6.6l: top front center of engine)
- Except 4.3l & 6.6l
- Except 6.6l 6.0l (vin k)
- Fresh air
- Frh air
- G102 (except 6.6l & 4.3l)
- G103 (except 6.6l) (on front of right cylinder head)
- G106 (4.3l) (right rear of engine)
- G200 (on right front corner of hvac module)
- G201 (upper left corner of dash)
- Gmlan l
- Ground
- Hot at all times
- Hvac batt fuse 39 (except 6.6l) fuse 36 (6.6l) 10a
- Hvac blwr fuse 70 (except 6.6l) fuse 65 (6.6l) 40a
- Hvac control module
- Hvac ign fuse 55 (except 6.6l) fuse 52 (6.6l) 10a
- Ign 3
- Interior lights system power distribution system
- J105
- J106
- J203
- Led cntl
- Left i/p junction block (lower left side of dash)
- Logic
- Low ref
- Lw prss
- Mode ctrl
- Mode switch
- Mtr spd ctrl
- Pnk
- R air tmp
- Rear defog
- Rear dfg
- Recir
- Recir ctrl
- Recirc
- Red
- Rer def
- Run/ crank relay
- Tan
- Temperature control switch
- Under- hood fuse block (left side of engine compt)
Manual A/C Wiring Diagram (2 of 3) for GMC Sierra 3500 HD 2008
List of elements for Manual A/C Wiring Diagram (2 of 3) for GMC Sierra 3500 HD 2008:
- (4.3l) g107
- (4.3l: top left rear of engine) (6.6l: on front of right cylinder head) (except 6.6l & 4.3l: on lower left front of engine)
- (6.6l) g103
- (lower left side of dash) body control module (bcm)
- (near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
- (on front of a/c compressor) a/c compressor clutch
- 4a1
- 4a4
- 4a6
- 4b3
- 4b5
- 87a
- Cooling fan diode 1
- Cooling fan diode 2
- Except 6.6l & 6.0l (vin k)
- Fan cntrl relay
- Fan lo relay
- Fan-1 fuse 60 40a
- Fan-2 fuse 62 40a
- G100 (on lower left rediator support)
- G101 (on lower right radiator support)
- G102 (except 6.6l & 4.3l)
- Hi fan relay
- Hot at all times
- J100
- J101
- J105
- Left engine cooling fan (left front of engine compt)
- Pnk
- Pwr/ trn relay
- Red
- Right engine cooling fan (right front of engine compt)
- Right i/p junction block (in right end of dash)
- Tan
- Under- hood fuse block (left side of engine compt)
Manual A/C Wiring Diagram (3 of 3) for GMC Sierra 3500 HD 2008
List of elements for Manual A/C Wiring Diagram (3 of 3) for GMC Sierra 3500 HD 2008:
- (not used)
- Air temperature actuator (top middle of hvac module)
- Logic
- Mode actuator (left end of hvac module)
- Recirculation actuator (front a/c) (top right side of hvac module)
- Tan