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

Forward Overhead


Object Number: 1394517  Size: MF
(1)Courtesy/Reading Lamps - Front, Left Reading
(2)Cellular Telephone Microphone (UE1)
(3)Sunroof Switch (CF5)
(4)Garage Door Opener Transmitter (UG1)
(5)Courtesy/Reading Lamps - Front, Right Reading
(6)Dome/Reading Lamp
(7)Sunroof (CF5)
(8)Vanity Mirror Lamp - Right (DH6)
(9)Inside Rearview Mirror
(10)OnStar Keypad (UE1)
(11)Vanity Mirror Lamp - Left (DH6/D74)
Figure 2:

Rear of the Vehicle - Extended Sedan


Object Number: 1535207  Size: MF
(1)Tail/Stop and Turn Signal Lamp - Left
(2)Tail Lamp - Left
(3)Rear Window Wiper Module (C25)
(4)Center High Mounted Stop Lamp (CHMSL)
(5)Rear Window Defogger Grid
(6)Liftgate Release Switch
(7)Radio Antenna
(8)Tail Lamp - Right
(9)Tail/Stop and Turn Signal Lamp - Right
(10)Backup Lamp - Right
(11)License Lamp
(12)Backup Lamp - Left