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

Passenger Compartment, Under the Driver Seat


Object Number: 154455  Size: LF
(1)C300 ( C307 RH Similar)
(2)S303
(3)S302
(4)Driver Inflatable Restraint Side Impact Inflator Module (Passenger Similar)
Figure 2:

Behind the LH Seat


Object Number: 296286  Size: LF
(1)LH Adaptive Lumbar Module (RH similar)
Figure 3:

Rear Heated Seat Modules


Object Number: 297485  Size: LF
(1)LH Rear Heated Seat Module
(2)RH Rear Heated Seat Module