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

C211 and C212


Object Number: 724036  Size: MF
(1)C212 to Lumbar Motor or Power Seat Harness
(2)Crossbody Harness
(3)C211 - Seat Belt Switch Harness
Figure 2:

Power Seat Components


Object Number: 724037  Size: MF
(1)Seat Front Vertical Motor - Driver
(2)Seat Horizontal Motor - Driver
(3)Seat Rear Vertical Motor - Driver
(4)Seat Wiring Harness
(5)Seat Lumbar Motor - Driver
(6)C212 - L, or C229 - R
(7)Crossbody Harness
(8)Seat Riser
(9)Seat Lumbar Switch - Driver
(10)Seat Adjuster Switch - Driver
Figure 3:

Power Seat Switches - Driver Bucket Shown


Object Number: 724038  Size: MF
(1)Front Tilt Switch
(2)Entire Seat Switch
(3)Rear Tilt Switch
(4)Lumbar Switch - Only -- Switch on bench seat, passenger seat, or driver bucket without power