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

Power, Ground and Switches


Object Number: 1930548  Size: FS
Master Electrical Component List
Heated/Vented Seat Description and Operation
Control Module References
Heated Elements and Cooling Modules
Figure 2:

Heating Elements and Cooling Modules (KA1/KB6)


Object Number: 1930579  Size: FS
Master Electrical Component List
Heated/Vented Seat Description and Operation
Control Module References
Power, Ground and Switches