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

Lumbar Support (w/o A45)


Object Number: 524697  Size: FS
Master Electrical Component List
Lumbar Support Description and Operation w/o A45
Driver Seat Lumbar (w/ A45)
PWR WDO and PWR SEAT Circuit Breakers (Fuse Block-Rear)
G301, 2 of 2
G301, 2 of 2
G301, 2 of 2
Battery Feed to the Fuse Block-Rear
Figure 2:

Driver Seat Lumbar (w/ A45)


Object Number: 524696  Size: FS
Master Electrical Component List
Lumbar Support Description and Operation w/o A45
RH Seat Switch and Motors (w/AG2, A81, AL2)
Driver Seat Vertical and Horizontal Motors and Sensors
Battery Feed to the Fuse Block-Rear
Power, Ground, Driver Seat Adjuster Switch and MSM
Driver Seat Recline Motor and Sensor