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Air Conditioning — Chevrolet Suburban K1500 2008 Wiring Diagram

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 4) for Chevrolet Suburban K1500 2008

List of elements for Automatic A/C Wiring Diagram (1 of 4) for Chevrolet Suburban K1500 2008:

(bottom center of hvac module) blower motor control module
(in headliner harness, approximately 35 cm from inside air temperature sensor front breakout)
(right front corner of hvac case) g200
(under right side of hvac module) blower motor
5v ref
A/c low pressure switch (on a/c high pressure hose)
A/c on ind
A/c on switch
Air temp
Air tmp
Amb tmp
Ambient light/ sunload sensor assembly (top center of dash)
B(+)
Blwr spd
Computer data lines system
Defogger system
Dfrst val
Fresh air ind
Fresh air request switch
Front defogger ind
Front defogger switch
Front inside air temperature sensor (above left front of headliner)
G103 (front of right cylinder head)
G200 (right front corner of hvac case)
G200 (right front corner of of hvac case)
G201 (behind upper left end of dash)
Gmlan l
Gnd
Ground
Hvac ambient air temperature sensor (right front of engine compt)
Hvac control module
Ign 3
J106
J203
J206 (in instrument panel harness, approximately 14 cm (5.51 in) from c207 breakout)
J325
J328
L air tmp
Left i/p junction block (below left end of dash)
Left temperature control
Lf sunld
Logic
Low ref
Lower auxiliary air temperature sensor (front of a rear hvac module)
Lw prss
Mode cntrl
Mode ctrl
Mode down switch
Mode up switch
Pnk
Power distribution system
R air tmp
Rear defogger ind
Rear defogger switch
Recir ctrl
Recirc
Recircu- lation ind
Recircu- lation switch
Red
Rer defg
Rf sunld
Right temperature control
Sens sig
Sns sig
Spd ctrl
Sw sig
Tan
Upper auxiliary air temperature sensor
Upper left air temperature sensor (at center of dash, below dash trim panel)
Upper right air temperature sensor (at center of dash, below dash trim panel)
X11

Automatic A/C Wiring Diagram (2 of 4) for Chevrolet Suburban K1500 2008

List of elements for Automatic A/C Wiring Diagram (2 of 4) for Chevrolet Suburban K1500 2008:

(behind lower left side of dash) body control module (bcm)
(left side of engine compt) engine control module (ecm)
(on a/c compressor) a/c compressor clutch
4a1
4a2
4a3
4a4
4a5
4a6
4b2
4b3
4b5
4b6
5-volt ref
A/c cmprsr fuse 17 10a
A/c cmprsr relay
A4 x5
Aux hvac-ign fuse 48 10a
Coil ctrl
Computer data lines system
Data bus+
Data bus-
E x4
Engine coolant temperature (ect) sensor (front of left cylinder head) b
G102 (lower left front of engine)
Hot at all times
Hvac batt fuse 39 10a
Hvac blwr fuse 70 40a
Hvac-ign fuse 55 10a
J219 (w/ heated steering wheel)
Low ref
Pnk
Red
Right i/p junction block (below right end of dash)
Rly ctrl
Run/ crank relay
Sens sig
Tan
Under- hood fuse block (left side of engine compt)

Automatic A/C Wiring Diagram (3 of 4) for Chevrolet Suburban K1500 2008

List of elements for Automatic A/C Wiring Diagram (3 of 4) for Chevrolet Suburban K1500 2008:

(bottom left side of hvac module) lower right air temperature sensor
(left side of hvac module) lower left air temperature sensor
(lower right radiator support) g101
87a
A/c refrigerant pressure sensor
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
G100 (lower left radiator support)
Hot at all times
Left air temperature actuator (bottom left side of hvac module)
Left engine cooling fan (behind radiator)
Mode actuator (on left side of hvac module)
Pnk
Pwr/ trn relay
Recirculation actuator (upper right of hvac module)
Right air temperature actuator (top of hvac module)
Right engine cooling fan (behind radiator)
Tan
Under- hood fuse block (left side of engine compt)

Automatic A/C Wiring Diagram (4 of 4) for Chevrolet Suburban K1500 2008

List of elements for Automatic A/C Wiring Diagram (4 of 4) for Chevrolet Suburban K1500 2008:

(above left rear of headlines) auxiliary inside air temperature sensor
(below rear hvac blower motor) auxiliary blower motor control module
(or pnk)
5v ref
Auto switch
Auxiliary air temperature actuator (on rear hvac module assembly)
Auxiliary blower motor (long wheel base: rear of rear hvac module) (short wheel base: right rear of passenger compt)
Auxiliary mode actuator (long wheel base: at front of rear hvac module) (short wheel base: on rear hvac module)
Blower speed control switch
Computer data lines system
Fan down switch
Fan up switch
G200 (right front corner of hvac case)
G402 (on right "d" pillar)
Gmlan
Gnd
Hot at all times
Hvac control module
I/p fuse block (behind lower left end of dash)
J328 (in headliner harness, approximately 5 cm from inside air temperature sensor front breakout)
Logic
Low ref
Mde cntrl
Mode select switch
Mtr cntrl
Off switch
Pnk
Rear hvac fuse 30a
Rear seat audio (rsa) controller
Sns cntrl
Spd ctrl
Temp cntrl
Temperature control switch

Compressor Wiring Diagram for Chevrolet Suburban K1500 2008

List of elements for Compressor Wiring Diagram for Chevrolet Suburban K1500 2008:

(on a/c compressor) a/c compressor clutch
5-volt ref
A/c cmprsr fuse 17 10a
A/c cmprsr relay
A/c ind
A/c low pressure switch (on a/c high pressure hose)
A/c on
A/c refrigerant pressure sensor
B(+)
Computer data lines system
Data bus+
Data bus-
Engine control module (ecm) (left side of engine compt)
G102 (lower left front of engine)
G103 (front of right cylinder head)
G200 (right front corner of hvac case)
Gmlan l
Ground
Hot at all times
Hvac batt fuse 39 10a
Hvac control module
J105
J106
J203
Logic
Low ref
Lw prss
Sens sig
Tan
Under- hood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (1 of 4) for Chevrolet Suburban K1500 2008

List of elements for Manual A/C Wiring Diagram (1 of 4) for Chevrolet Suburban K1500 2008:

(below left end of dash) left i/p junction block
(bottom center of hvac module) blower motor control module
(right front corner of hvac case) g200
(under right side of hvac module) blower motor
5v ref
A/c low pressure switch (on a/c high pressure hose)
A/c on ind
A/c on switch
Air tmp
Auxiliary hvac control module (above middle of headliner)
B(+)
Blower control switch
Blwr spd
Computer data lines system
Defogger system
Dfrst val
Front defogger ind
Front defogger switch
G103 (front of right cylinder head)
G200 (right front corner of hvac case)
G201 (behind upper left end of dash)
Gmlan l
Gnd
Ground
Hvac control module
Ign 3
Interior lights system
Interior lights system power distribution system
J106
J203
J328
L air tmp
Led cntrl
Left temperature control
Logic
Low ref
Lw prss
Mode ctrl
Mode select switch
Mode sig
Mtr sig
Pnk
R air tmp
Rear defogger ind
Rear defogger switch
Recir ctrl
Recircu- lation ind
Recircu- lation switch
Red
Rer defg
Right temperature control
Spd ctrl
Sw sig
Tan
Temp sig
Temperature control switch
X11

Manual A/C Wiring Diagram (2 of 4) for Chevrolet Suburban K1500 2008

List of elements for Manual A/C Wiring Diagram (2 of 4) for Chevrolet Suburban K1500 2008:

(behind lower left side of dash) body control module (bcm)
(left side of engine compt) engine control module (ecm)
(on a/c compressor) a/c compressor clutch
4a1
4a4
4a6
4b2
4b3
4b5
4b6
5-volt ref
A/c cmprsr fuse 17 10a
A/c cmprsr relay
Aux hvac-ign fuse 48 10a
Coil ctrl
Computer data lines system
Data bus+
Data bus-
E x4
Engine coolant temperature (ect) sensor (front of left cylinder head) b
G102 (lower left front of engine)
Hot at all times
Hvac batt fuse 39 10a
Hvac blwr fuse 70 40a
Hvac-ign fuse 55 10a
J219 (w/ heated steering wheel)
Low ref
Pnk
Red
Right i/p junction block (below right end of dash)
Rly ctrl
Run/ crank relay
Sens sig
Tan
Under- hood fuse block (left side of engine compt)
X1 x1

Manual A/C Wiring Diagram (3 of 4) for Chevrolet Suburban K1500 2008

List of elements for Manual A/C Wiring Diagram (3 of 4) for Chevrolet Suburban K1500 2008:

(lower right radiator support) g101
(not used)
87a
A/c refrigerant pressure sensor
Fan cntrl relay
Fan hi relay
Fan lo relay
Fan-1 fuse 57 40a
Fan-2 fuse 60 40a
G100 (lower left radiator support)
Hot at all times
J100 (in forward lamp harness)
Left air temperature actuator (bottom left side of hvac module)
Left engine cooling fan (behind radiator)
Mode actuator (on left side of hvac module)
Pnk
Pwr/ trn relay
Recirculation actuator (upper right of hvac module)
Right air temperature actuator (top of hvac module)
Right engine cooling fan (behind radiator)
Tan
Under- hood fuse block (left side of engine compt)

Manual A/C Wiring Diagram (4 of 4) for Chevrolet Suburban K1500 2008

List of elements for Manual A/C Wiring Diagram (4 of 4) for Chevrolet Suburban K1500 2008:

(below rear hvac blower motor) auxiliary blower motor control module
(or pnk)
5v ref
Air request
Auxiliary air temperature actuator (on rear hvac module assembly)
Auxiliary blower motor (long wheel base: rear of rear hvac module) (short wheel base: right rear of passenger compt)
Auxiliary mode actuator (long wheel base: at front of rear hvac module) (short wheel base: on rear hvac module)
Blower speed
Computer data lines system
Down
G402 (on right "d" pillar)
Gmlan
Gnd
Hot at all times
Hvac control module
I/p fuse block (behind lower left end of dash)
Logic
Low ref
Mde cntrl
Mtr cntrl
Pnk
Rear hvac fuse 30a
Rear seat audio (rsa) controller
Spd ctrl
Temp cntrl
Temperature control

AIR CONDITIONING – Chevrolet Suburban K1500 2008 – SYSTEM WIRING DIAGRAMS