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

Instrument Panel Cluster (IPC), Below the Steering Column


Object Number: 321377  Size: LF
(1)S225
(2)S226
(3)Brake Pedal
(4)Stoplamp/AT Shift Lock Control Switch
(5)Stoplamp Switch
(6)Steering Column Support Bracket
Figure 2:

Beneath the Center Console


Object Number: 338809  Size: LF
(1)Park Lock Cable Assembly
(2)A/T Shift Lock Control Solenoid