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

6-Way Power Seat


Object Number: 1892857  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Lumbar Support
Figure 2:

Lumbar Support


Object Number: 1892859  Size: FS
Master Electrical Component List
Lumbar Support Description and Operation
Control Module References
6-Way Power Seat