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

8-Way Power Seat Controls


Object Number: 1480921  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Lumbar Support
Fuse Block Underhood Fuses - BATT1, Fuse Block I/P Fuses - HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH, Fuse Block I/P Circuit Breakers - Door Controls and Power Seats
G302, G401 and G402
Figure 2:

Lumbar Support


Object Number: 1482022  Size: FS
Master Electrical Component List
Lumbar Support Description and Operation
Control Module References
Heated/Cooled Seats
8-Way Power Seat Controls
Fuse Block Underhood Fuses - BATT1, Fuse Block I/P Fuses - HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH, Fuse Block I/P Circuit Breakers - Door Controls and Power Seats
Lumbar Support
G302, G401 and G402
Figure 3:

Heated/Cooled Seats


Object Number: 1480771  Size: FS
Master Electrical Component List
Heated/Cooled Seats Description and Operation
Control Module References
Lumbar Support
Fuse Block Underhood Fuses - BATT1, Fuse Block I/P Fuses - HEATED SEAT LH, HEATED SEAT RH, POWER LUMBAR LH/RH, Fuse Block I/P Circuit Breakers - Door Controls and Power Seats
BCM Fuses - AC LATCH/PK BRK B, CLUSTER, DOOR LOCKS, HVAC/PWR SND, INTERIOR LIGHTS, ISRVM/HVAC, and TUTD SW/STRG COL SW
BCM Fuses - ECM. GMLAN Devices, RPA/H/C SEAT and SDM/PSIR SW, Fuse Block Underhood Fuses - ABS/MRRTD, and ACC/TCM
BCM Fuses - ECM. GMLAN Devices, RPA/H/C SEAT and SDM/PSIR SW, Fuse Block Underhood Fuses - ABS/MRRTD, and ACC/TCM
G302, G401 and G402