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

Left Side of Upper Left Footwell


Object Number: 1204584  Size: LF
(1)Body Control Module (BCM)
(2)C290
(3)C291
Figure 2:

Right Side of Upper Left Footwell


Object Number: 1211595  Size: LF
(1)C201
(2)Inflatable Restraint Steering Wheel Module Coil, C1
(3)G202
(4)G201
(5)Splice Pack SP205
(6)Data Link Connnector (DLC)