Driver Information and Entertainment

All Description and Operation

• OnStar Description and Operation
• Radio/Audio System Description and Operation

Diagnostic Procedures

• Audio Distortion - One or More Speakers
• Compact Disc Inoperative
• Diagnostic Starting Point - Entertainment
• Radio Display Inoperative, No Sound from Speakers
• Radio Poor Reception
• Symptoms - Entertainment
• Tape Player Inoperative

Diagnostic Trouble Codes

• DTC B1025, B1035, B1045, or B1055
• DTC B1446 or B1447
• DTC B2455
• DTC B2462
• DTC B2470
• DTC B2476

Electrical/Electronic Schematic Diagrams

• Radio/Navigation System Schematics

Mechanical Specifications

• Fastener Tightening Specifications

Removal, Installation, and Replacement

• Cellular and Navigation Antenna Assembly Replacement
• Communication Interface Module Battery Replacement
• Communication Interface Module Replacement
• Front Upper Speaker Replacement
• Mobile Telephone Microphone Replacement
• OnStar Button Assembly Replacement
• Radio Antenna Module Replacement
• Radio Front Speaker Replacement
• Radio Rear Speaker Replacement
• Radio Replacement