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Air Conditioning — Chevrolet Silverado 2500 HD 2007 Wiring Diagram

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Chevrolet Silverado 2500 HD 2007

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Chevrolet Silverado 2500 HD 2007:

(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 control module
5v ref
A/c ind
A/c low pressure switch (on right side of a/c accumulator)
A/c on
Air temp
Air tmp
Amb air tmp
Ambient air temperature sensor (on radiator support)
Ambient light/ sunload sensor assembly (on top center of dash)
Auto
B(+)
Blower motor
Blwr spd
Colnt lvl
Computer data lines system
Defogger system
Dfrst val
Diesel
Engine coolant level switch (on bottom of surge tank)
Fan dn
Fan up
Fresh air
Frnt dfg
Frt def
Fsh air
G103 (on front of right cylinder head) (w/o 1500) g106 (lower left side of engine) (w/ 1500)
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Gmlan l
Ground
Hvac control module
Ign 3
J106
J203
J206
J328
L air tmp
Left temp control
Lf sunld
Logic
Low ref
Lw prss
Mode ctrl
Mode dn
Mode up
Off
Power distribution system
R air tmp
Rear defog
Rear dfg
Recir
Recir ctrl
Recirc
Recirc pos
Red
Rer def
Rf sunld
Right temp control
Tan
Upper left air temperature sensor
Upper right air temperature sensor

Automatic A/C Wiring Diagram (2 of 3) for Chevrolet Silverado 2500 HD 2007

List of elements for Automatic A/C Wiring Diagram (2 of 3) for Chevrolet Silverado 2500 HD 2007:

(gas) (diesel)
A/c cmprsr fuse 18 10a
A/c comp- ressor clutch relay
A/c compressor clutch
A4 x5
Body control module (bcm) (lower left side of dash)
E x4
Engine control module (ecm)
G102 (on lower left front of engine) (w/o 1500) g107 (lower left side of engine) (w/ 1500)
Hot at all times
Hvac batt fuse 40 10a
Hvac blwr fuse 72 40a
Hvac ign fuse 57 fuse 55 10a
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)
W/ 1500
W/ diesel
W/o 1500

Automatic A/C Wiring Diagram (3 of 3) for Chevrolet Silverado 2500 HD 2007

List of elements for Automatic A/C Wiring Diagram (3 of 3) for Chevrolet Silverado 2500 HD 2007:

(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
87a
Cool/ fan relay 1
Cooling fan diode 1
Cooling fan diode 2
Fan cntrl relay
Fan lo relay
Fan-1 fuse 59 40a
Fan-2 fuse 62 40a
G100 (on lower left radiator support)
Hot at all times
J100
Left air temperature actuator (bottom left of hvac module)
Left cooling fan
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 cooling fan
Tan
Under- hood fuse block (left side of engine compt)

Compressor Wiring Diagram for Chevrolet Silverado 2500 HD 2007

List of elements for Compressor Wiring Diagram for Chevrolet Silverado 2500 HD 2007:

A/c cmprsr fuse 18 10a
A/c cmprsr relay
A/c compressor clutch
A/c ind
A/c low pressure switch
A/c on
A/c refrigerant pressure sensor
B(+)
Computer data lines system
Engine control module (ecm)
G102 (on lower left front of engine) (w/o 1500) g107 (lower left side of engine) (w/ 1500)
G103 (on front of right cylinder head) (w/o 1500) g106 (lower left side of engine) (w/ 1500)
G200 (on right front corner of hvac module)
Gmlan l
Ground
Hot at all times
Hvac batt fuse 40 10a
Hvac control module
J106
J203
Logic
Lw prss
Tan
Under- hood fuse block (left side of engine compt)
W/ 1500
W/ diesel
W/o 1500

Manual A/C Wiring Diagram (1 of 3) for Chevrolet Silverado 2500 HD 2007

List of elements for Manual A/C Wiring Diagram (1 of 3) for Chevrolet Silverado 2500 HD 2007:

(gas) (diesel)
(lower right side of hvac module) blower motor control module
5v ref
A/c cmprsr fuse 18 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(+)
Blower motor
Blwr spd
Colnt lvl
Computer data lines system
Defogger system
Dfrst val
Diesel
Engine control module (ecm)
Engine coolant level switch (on bottom of surge tank)
Fresh air
Frh air
G102 (on lower left front of engine) (w/o 1500) g107 (lower left side of engine) (w/ 1500)
G103 (on front of right cylinder head) (w/o 1500) g106 (lower left side of engine) (w/ 1500)
G200 (on right front corner of hvac module)
G201 (upper left corner of dash)
Gmlan l
Ground
Hot at all times
Hvac batt fuse 40 10a
Hvac blwr fuse 72 40a
Hvac control module
Hvac ign fuse 57 fuse 55 10a
Ign 3
Interior light system power distribution system
J106
J203
Led cntl
Left i/p junction block (lower left side of dash)
Logic
Low ref
Lw prss
Mode ctrl
Pnk
R air tmp
Rear defog
Rear dfg
Recir
Recir ctrl
Recirc
Red
Rer def
Run/ crank relay
Tan
Under- hood fuse block (left side of engine compt)
W/ 1500
W/ diesel
W/o 1500

Manual A/C Wiring Diagram (2 of 3) for Chevrolet Silverado 2500 HD 2007

List of elements for Manual A/C Wiring Diagram (2 of 3) for Chevrolet Silverado 2500 HD 2007:

(near compressor, on a/c high pressure hose) a/c refrigerant pressure sensor
87a
A/c compressor clutch
Body control module (bcm)
Cool/ fan relay 1
Cooling fan diode 1
Cooling fan diode 2
Fan cntrl relay
Fan lo relay
Fan-1 fuse 59 40a
Fan-2 fuse 62 40a
G100 (on lower left radiator support)
Hot at all times
J100
Left cooling fan (left front of eng compt)
Pnk
Pwr/ trn relay
Red
Right cooling fan (right front of eng 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 Chevrolet Silverado 2500 HD 2007

List of elements for Manual A/C Wiring Diagram (3 of 3) for Chevrolet Silverado 2500 HD 2007:

Logic
Mode actuator (left end of hvac module)
Not used
Recirculation actuator (top right side of hvac module)
Right air temperature actuator (top middle of hvac module)
Tan

AIR CONDITIONING – Chevrolet Silverado 2500 HD 2007 – SYSTEM WIRING DIAGRAMS