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

Antenna, DLC, Ground, Power and User Inputs


Object Number: 1410255  Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Audio Output
Fuse Block - Underhood Fuse BATT5, BCM Fuses: DRIV DR SW, IGN SW/INTR SENS, ONSTAR, TELE SW/MEM SEAT MOD, and TPA
Class 2
GMLAN - M/T
GMLAN - A/T
Inside Rearview Mirror Schematics
Passenger Compartment Lamps
G202, 1 of 2
G104, G106, and G303
Figure 2:

Audio Output


Object Number: 1410258  Size: FS
Master Electrical Component List
OnStar Description and Operation
Control Module References
Antenna, DLC, Ground, Power and User Inputs