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

Brake Switches


Object Number: 461056  Size: LF
(1)Stop lamp/Automatic Trans Shift Lock Control Switch, C1
(2)Stop lamp/Automatic Trans Shift Lock Control Switch, C2
(3)Stop lamp/Automatic Trans Shift Lock Control Switch
(4)Stop lamp Switch
(5)Stop lamp Switch Connector
Figure 2:

Steering Column


Object Number: 741012  Size: MF
(1)Theft Deterrent Control Module
(2)Ignition Switch
(3)A/T Shift Lock Control Solenoid
(4)Turn Signal/Multifunction Switch
(5)Inflatable Restraint Steering Wheel Module Coil
(6)C201
(7)Fuse Holder - Steering Column
(8)C202