GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Primary Blower and Air Delivery Controls - C42


Object Number: 1254529  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Primary Blower and Air Delivery Controls - C60
IGN A Fuse, Start, ACCY/RUN/START and RUN Bus Bars
HVAC 1 Fuse
B+ Bus - Underhood Fuse Block
I/P Dimming Supply Voltage 1 of 3 and LED Dimming Supply Voltage
G303 and G304
G102
Figure 2:

Primary Blower and Air Delivery Controls - C60


Object Number: 1254543  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Compressor Controls - C60
Primary Blower and Air Delivery Controls - C42
IGN A Fuse, Start, ACCY/RUN/START and RUN Bus Bars
HVAC 1 Fuse
B+ Bus - Underhood Fuse Block
I/P Dimming Supply Voltage 1 of 3 and LED Dimming Supply Voltage
G303 and G304
G102
Figure 3:

Compressor Controls - C60


Object Number: 1254545  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
Primary Blower and Air Delivery Controls - C60
B+ Bus - Underhood Fuse Block
IGN B Fuse, ACCY/RUN and RUN/START Bus Bars
Spare, IGN E, SIR, TBC IGN 1 and ISRV Fuses
IGN A Fuse, Start, ACCY/RUN/START and RUN Bus Bars
Primary Blower and Air Delivery Controls - C60
G102
Figure 4:

Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69


Object Number: 1254580  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
Compressor Controls - C60
IGN A Fuse, Start, ACCY/RUN/START and RUN Bus Bars
HVAC 1 Fuse
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 3 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 3 of 3 - C69
I/P Dimming Supply Voltage 3 of 3
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
G347 - 3 of 3
Figure 5:

Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69


Object Number: 1254585  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC with Rear Auxiliary Controls 3 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
I/P Dimming Supply Voltage 3 of 3
G347 - 3 of 3
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 3 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 3 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 3 of 3 - C69
G347 - 3 of 3
Figure 6:

Rear HVAC with Rear Auxiliary Controls 3 of 3 - C69


Object Number: 1254591  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC w/o Rear Auxiliary Controls 1 of 2 - C69
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
B+ Bus - Body Fuse Block
IGN A Fuse, Start, ACCY/RUN/START and RUN Bus Bars
HVAC 1 Fuse
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 1 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
Rear HVAC with Rear Auxiliary Controls 2 of 3 - C69
G401 - Passenger/Cargo
Figure 7:

Rear HVAC w/o Rear Auxiliary Controls 1 of 2 - C69


Object Number: 1254596  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC w/o Rear Auxiliary Controls 2 of 2 - C69
Rear HVAC with Rear Auxiliary Controls 3 of 3 - C69
IGN A Fuse, Start, ACCY/RUN/START and RUN Bus Bars
HVAC 1 Fuse
Rear HVAC w/o Rear Auxiliary Controls 2 of 2 - C69
Rear HVAC w/o Rear Auxiliary Controls 2 of 2 - C69
Rear HVAC w/o Rear Auxiliary Controls 2 of 2 - C69
Rear HVAC w/o Rear Auxiliary Controls 2 of 2 - C69
Rear HVAC w/o Rear Auxiliary Controls 2 of 2 - C69
I/P Dimming Supply Voltage 3 of 3
G347 - 3 of 3
Figure 8:

Rear HVAC w/o Rear Auxiliary Controls 2 of 2 - C69


Object Number: 1254601  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC - C36
Rear HVAC w/o Rear Auxiliary Controls 1 of 2 - C69
B+ Bus - Body Fuse Block
IGN A Fuse, Start, ACCY/RUN/START and RUN Bus Bars
HVAC 1 Fuse
Rear HVAC w/o Rear Auxiliary Controls 1 of 2 - C69
Rear HVAC w/o Rear Auxiliary Controls 1 of 2 - C69
Rear HVAC w/o Rear Auxiliary Controls 1 of 2 - C69
Rear HVAC w/o Rear Auxiliary Controls 1 of 2 - C69
Rear HVAC w/o Rear Auxiliary Controls 1 of 2 - C69
G401 - Passenger/Cargo
Figure 9:

Rear HVAC - C36 w/o C69


Object Number: 1254604  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Rear HVAC w/o Rear Auxiliary Controls 2 of 2 - C69
B+ Bus - Body Fuse Block
IGN A Fuse, Start, ACCY/RUN/START and RUN Bus Bars
HVAC 1 Fuse
I/P Dimming Supply Voltage 2 of 3
G401 - Passenger/Cargo
G347 - 2 of 3