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

Power, Grounds, DLC, and Antennas


Object Number: 798453  Size: FS
Master Electrical Component List
OnStar Description and Operation
Inputs and Outputs
Battery 3 (Regal)
Data Link Connector (DLC)
G203 (Page 2 of 2)
Figure 2:

Inputs and Outputs


Object Number: 798455  Size: FS
Master Electrical Component List
OnStar Description and Operation
Power, Ground, and DLC
Cellular Communication Schematic Icons
Cellular Communication Schematic Icons
Mirror, Dome, and Courtesy/Reading Lamps
G402 (Page 1 of 2)
G402 (Page 1 of 2)