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

Below the Driver Side I/P


Object Number: 1863186  Size: LF
(1)Audio Amplifier (UQA or UQG or UQS)
(2)Body Control Module (BCM)
(3)Brake Pedal Position Sensor
(4)Accelerator Pedal Position (APP) Sensor
(5)G301
(6)Park Brake Switch
Figure 2:

Below the Left Knee Bolster


Object Number: 1863181  Size: LF
(1)Data Link Connector (DLC)
(2)Pedal Assembly
(3)Floor Panel
Figure 3:

GMLAN Resistor


Object Number: 1867852  Size: LF
(1)Rear Suspension Frame
(2)GMLAN Data Link Resistor (-MH6)