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

Blower Control


Object Number: 659885  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Power and Ground
G201 (1 of 2)
Figure 2:

Power and Ground


Object Number: 659888  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Compressor Control
Blower Control
eft Underhood Fuse Block- BAT 1 Fuse/ Rear Fuse BLock-RDM, C/LTR, DDM, HTDST L, TRK REL Fuses/ I/P Fuse Block- PDM, SBM, and CSTR/SBM Fuses
I/P Fuse Block- HVAC and A/C Fuses
I/P and Front Door Backlighting
Class 2 Serial Data Line
G202 (2 of 4)
G202 (1 of 4)
Figure 3:

Compressor Control


Object Number: 659893  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Actuators
Power and Ground
Left Underhood Fuse Block- T/SIG, A/C CLU Fuses and A/C CLU Relay
Class 2 Serial Data Line
5 Volt and Low Reference
G100, G101, G102 and G103
Figure 4:

Actuators


Object Number: 659894  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Sensors
Compressor Control
Left Underhood Fuse Block- IGN Fuse/ I/P Fuse Block-RUN Fuse, IGN 3 and ACCY Relay
Figure 5:

Sensors


Object Number: 659897  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Steering Wheel and Temperature Controls
Actuators
Figure 6:

Steering Wheel Controls


Object Number: 659901  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Sensors
Circuit Breaker/Rear Fuse Block- RDO/PH, SUNRF Fuses and RAP Relay
Circuit Breaker/Rear Fuse Block- RDO/PH, SUNRF Fuses and RAP Relay
Power, Ground, and Serial Data
VIU Output Signals
SIR Caution for Zoning
SIR Caution for Zoning