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

Instrument Panel (I/P) Components


Object Number: 1707551  Size: LF
(1)Inflatable Restraint Steering Wheel Module
(2)Instrument Panel Cluster (IPC)
(3)Sunload Twilight Sensor (CJ2)/Ambient Light Sensor (C67)
(4)Speaker - Front Center (UQA)
(5)Hazard Switch
(6)Inflatable Restraint I/P Module
(7)I/P Compartment Lamp
(8)Radio
(9)HVAC Control Module
(10)Auxiliary Power Outlet - Console (A51)/Cigar Lighter (DT4/A51)
(11)Traction Control Switch (A51)
(12)Steering Wheel Controls
(13)Data Link Connector (DLC)
(14)Air Temperature Sensor - Inside (CJ2)
(15)Headlamp Switch
(16)Turn Signal/Multifunction Switch
(17)Driver Information Display Switch
Figure 2:

Underneath Center Dash Panel


Object Number: 1706962  Size: LF
(1)Sunload Twilight Sensor (CJ2)/Ambient Light Sensor (C67)
(2)Global Positioning System (GPS) Antenna (U3U)
Figure 3:

Overhead Console and Inside Rearview Mirror Components


Object Number: 1707483  Size: LF
(1)Sunroof Switch - Open/Close (CF5)
(2)Cellular Microphone (UE1, U3U)
(3)Garage Door Opener Buttons (UG1)
(4)Cellular Microphone (UE1, U3U)
(5)Sunroof Switch - Vent (CF5)
(6)Courtesy Lamp - Overhead Console - Right
(7)Inside Rearview Mirror
(8)Courtesy Lamp Switch - Right
(9)Cellular Microphone (UE1, U3U)
(10)Garage Door Opener Transmitter (UG1)
(11)Cellular Microphone (UE1, U3U)
(12)Courtesy Lamp Switch - Left
(13)Onstar Button Assembly
(14)Inflatable Restraint I/P Module Indicator
(15)Courtesy Lamp Overhead Console - Left