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

6-Way Power Controls


Object Number: 1480327  Size: FS
Master Electrical Component List
Power Seats System Description and Operation
Control Module References
Heat Controls
Fuse Block - Underhood BATT MAIN 2 Fuse, Fuse Block - I/P HTD SEAT, PWR MIRS, TURN/HAZ, DR LK/TRUNK, PRKSW, and SUN ROOF Fuses, PWR SEAT and PWR WDO Circuit Breakers, and RAP Relay
G301
Figure 2:

Heat Controls


Object Number: 1480328  Size: FS
Master Electrical Component List
Heated Seats Description and Operation
Control Module References
6-Way Power Controls
L26
LY7
Fuse Block - Underhood BATT MAIN 2 Fuse, Fuse Block - I/P HTD SEAT, PWR MIRS, TURN/HAZ, DR LK/TRUNK, PRKSW, and SUN ROOF Fuses, PWR SEAT and PWR WDO Circuit Breakers, and RAP Relay
G301