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

Floor Panel, Utility


Object Number: 357179  Size: LF
(1)S309
(2)C317
(3)Seat Belt Switch
(4)Supplemental Inflatable Restraint Sensing and Diagnostic Module
(5)C315
Figure 2:

Body Wiring to Floor Air Distributor


Object Number: 354573  Size: SF
(1)Seat Lumbar Support Motor Connector, RH (LH Similar)
Figure 3:

Power Seat Adjuster Switch, Seat Memory Switch, Lumbar Switch and Heated Seat Switch


Object Number: 418034  Size: LF
(1)Memory Position 1 Switch
(2)Memory Set Switch
(3)Memory Position 2 Switch
(4)Power Seat Adjuster Switch, LH (RH Similar)
(5)Lumbar Switch, LH (RH Similar)
(6)Heated Seat Switch