Reference Information

Schematic Reference

OnStar/Telematics Schematics (Buick) OnStar/Telematics Schematics (Chevrolet) 

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX (ENCORE)COMPONENT CONNECTOR END VIEWS - INDEX (TRAX)

Description and Operation

OnStar Description and Operation 

Electrical Information Reference

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