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

Under Front Floor Console


Object Number: 1656938  Size: LF
(1)A/T Shift Lock Control Solenoid
(2)Reverse Lockout Solenoid C1 (AQ9)
(3)Reverse Lockout Solenoid
(4)Reverse Lockout Solenoid C2 (AQ9)
(5)PRNDL Lamp
(6)HVAC Control Module - Auxiliary (CJ4)
(7)Auxiliary Power Outlet - Console (AQ9)
(8)Traction Control Switch
(9)Cigar Lighter
Figure 2:

Steering Column Components


Object Number: 1657337  Size: LF
(1)Turn Signal/Multifunction Switch
(2)Traction Control Switch (AV8)
(3)Column Shifter Shift Lock Control Solenoid (AV8)
(4)Ignition Key Alarm Switch
(5)Theft Deterrent Module (TDM)
(6)Ignition Switch
(7)Inflatable Restraint Steering Wheel Module Coil
(8)Steering Angle Sensor (JL4)
(9)Telescoping Actuator (N37)
(10)Tilt Actuator (N37)
(11)Tilt/Telescope Switch (N37)