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

Driver Seat


Object Number: 1407392  Size: LF
(1)Seat Motors - Driver
(2)Seat Adjuster Switch - Driver C1
(3)Seat Adjuster Switch - Driver C2
(4)Seat Motors - Driver Connector
(5)Lumbar Pump Motor - Driver
(6)C307
(7)C314
(8)Heater Element Seat Back - Driver
(9)C319
(10)Recliner Motor
(11)Heated Seat Module - Driver
(12)Seat Belt Switch - Driver
(13)Seat Position Switch - Left
Figure 2:

Driver Seat Switches


Object Number: 1407561  Size: LF
(1)Lumbar Adjuster/Heater Switch - Driver
(2)Seat Recliner Switch - Driver
(3)Seat Adjuster Switch - Driver
Figure 3:

Passenger Seat


Object Number: 1424731  Size: LF
(1)Seat Motors - Passenger
(2)Seat Position Switch - Right
(3)Seat Belt Switch - Passenger
(4)Heated Seat Module - Passenger
(5)Lumbar Pump Motor - Passenger
(6)Heater Element Seat Back Passenger
(7)Seat Motors - Passenger Connector
(8)C313
(9)C315
(10)C318
Figure 4:

Passenger Seat Switches


Object Number: 1407583  Size: LF
(1)Seat Adjuster Switch - Passenger
(2)Lumbar Adjuster/Heater Switch - Passenger