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

DLC Power and Grounds


Object Number: 397505  Size: FS
ELC, RR DEFOG, and ALDL Fuses (Rear Fuse Block)
G201 (1 of 3)
G201 (2 of 3)
G201 (1 of 3)
G201 (2 of 3)
Data Link Communications Components
Data Link Communications Circuit Description
Serial Data Class 2
Figure 2:

Serial Data Class 2


Object Number: 397507  Size: FS
DLC Power and Grounds
Engine Controls Connector End Views
Antilock Brake System Connector End Views
Body Control System Connector End Views
Entertainment Connector End Views
Power Door Systems Connector End Views
Power Seat Connector End Views
Instrument Cluster and HUD Connector End Views
SIR Connector End Views
Theft Deterrent System Connector End Views
HVAC Connector End Views
HVAC Connector End Views
Entertainment Connector End Views
Instrument Cluster and HUD Connector End Views