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

LH Lumbar Switch, Motors and Sensors (w/ A45)


Object Number: 535169  Size: FS
Power Seat Systems Components
Power Lumbar Circuit Description w/o A45
RH Lumbar Switch
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
HTDST RF , HTDST LF, DIM, and MEM Fuses (Rear Fuse Block)
Power, Ground, LH Seat Switch and MSM
Vertical and Horizontal Motors and Sensors
Vertical and Horizontal Motors and Sensors
Figure 2:

RH Lumbar Switch


Object Number: 467602  Size: FS
Power Seat Systems Components
Power Lumbar Circuit Description w/o A45
LH Lumbar Switch, Motors and Sensors (w/ A45)
PWR WDO and PWR SEAT Circuit Breakers (Rear Fuse Block)
G301 (1 of 2)
G301 (1 of 2)