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

8-Way Power


Object Number: 1657125  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Heat Controls
BATT 2, HTD/SEAT, AIRBAG, PWR/MIR Fuses, and PWR/SEAT Circuit Breaker
BATT 2, HTD/SEAT, AIRBAG, PWR/MIR Fuses, and PWR/SEAT Circuit Breaker
BATT 2, HTD/SEAT, AIRBAG, PWR/MIR Fuses, and PWR/SEAT Circuit Breaker
G301
Figure 2:

Heat Controls


Object Number: 1657127  Size: FS
Master Electrical Component List
Heated Seats Description and Operation
Control Module References
8-Way Power
BATT 2, HTD/SEAT, AIRBAG, PWR/MIR Fuses, and PWR/SEAT Circuit Breaker
BATT 2, HTD/SEAT, AIRBAG, PWR/MIR Fuses, and PWR/SEAT Circuit Breaker
BATT 2, HTD/SEAT, AIRBAG, PWR/MIR Fuses, and PWR/SEAT Circuit Breaker
Power, Ground, and Low Speed GMLAN Serial Data
G301