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

Module Power and Ground, Blower Control, and Subsystem References


Object Number: 1883021  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Control Module References
Actuators
Figure 2:

Actuators


Object Number: 1883030  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Control Module References
Compressor Controls
Module Power and Ground, Blower Control, and Subsystem References
Figure 3:

Compressor Controls


Object Number: 1883033  Size: FS
Master Electrical Component List
Air Temperature Description and Operation
Control Module References
Rear HVAC without UK6
Actuators
Figure 4:

Rear HVAC without UK6


Object Number: 1883036  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Control Module References
Rear HVAC UK6
Compressor Controls
Figure 5:

Rear HVAC UK6


Object Number: 1883038  Size: FS
Master Electrical Component List
Air Delivery Description and Operation
Control Module References
Rear HVAC without UK6