Reference Information

Schematic Reference:

OnStar/Telematics Schematics 

Connector End View Reference:

COMPONENT CONNECTOR END VIEWS - INDEX .

Description and Operation:

OnStar Description and Operation 

Electrical Information Reference:

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference:

Refer to Control Module References for scan tool information