Data Link Connector (DLC) Schematics

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Power, Ground, Data Link Connector, and SP205 Schematic

Courtesy of GENERAL MOTORS CORP.

Fig 2: SP306 Schematic - Except XUV

Courtesy of GENERAL MOTORS CORP.

Fig 3: SP306 Schematic - XUV

Courtesy of GENERAL MOTORS CORP.