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

w/o A45


Object Number: 885836  Size: FS
Master Electrical Component List
Lumbar Support Description and Operation w/o A45
PWR WDO and PWR SEAT Fuses (Fuse Block Rear)
G301 (2 of 2)
PWR WDO and PWR SEAT Fuses (Fuse Block Rear)
G300 and G301 (1 of 2)
G300 and G301 (1 of 2)
w/A45
Figure 2:

w/A45


Object Number: 885857  Size: FS
Master Electrical Component List
Lumbar Support Description and Operation with A45
HTDST RF, HTDST LF, DIM, and Mem Fuses (Fuse Block Rear)
Power, Ground, Left Seat Switch, and the MSM
Vertical and Horizontal Motors and Sensors
Vertical and Horizontal Motors and Sensors
w/o A45