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

8-Way Power Seat Controls


Object Number: 1757177  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Lumbar Support
BATT 1, HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH Fuses, and DOOR CONTROLS, POWER SEATS Circuit Breakers, and FUEL DOOR Relay
BATT 1, HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH Fuses, and DOOR CONTROLS, POWER SEATS Circuit Breakers, and FUEL DOOR Relay
G302, G401, and G402
Figure 2:

Lumbar Support


Object Number: 1757180  Size: FS
Master Electrical Component List
Lumbar Support Description and Operation
Control Module References
8-Way Power Seat Controls
BATT 1, HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH Fuses, and DOOR CONTROLS, POWER SEATS Circuit Breakers, and FUEL DOOR Relay
BATT 1, HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH Fuses, and DOOR CONTROLS, POWER SEATS Circuit Breakers, and FUEL DOOR Relay
Lumbar Support
G302, G401, and G402