For 1990-2009 cars only
Driver Information and Entertainment
All Description and Operation
All Special Tools and Equipment
Diagnostic Procedures
- Diagnostic Starting Point - Cellular, Entertainment, and Navigation
- Digital Radio Malfunction
- OnStar Audio Malfunction
- OnStar Button LED Malfunction
- OnStar Button Malfunction
- OnStar Call Center Remote Function Requests Inoperative
- OnStar Global Positioning System (GPS) Data Not Current or Inaccurate
- OnStar Microphone Malfuncation
- OnStar Steering Wheel Control Functions Inoperative
- OnStar Voice Recognition Malfunction
- Radio Poor Reception
- Speaker Malfunction
- Speaker Replacement Reference
- Symptoms - Cellular Communication
- Symptoms - Entertainment
- Unable to Contact OnStar Call Center
Diagnostic Trouble Codes
- DTC B0996, B1016, or B1271
- DTC B0997
- DTC B1019
- DTC B101D
- DTC B101E
- DTC B1023
- DTC B1025, B1035, B1045, or B1055
- DTC B1240 or B1245
- DTC B1243 or B1248
- DTC B1244 or B1249
- DTC B1259
- DTC B1423
- DTC B1446 or B1447
- DTC B2455
- DTC B2470
- DTC B2476 or B2482
- DTC B2483 or B2484
- DTC U2121
Electrical/Electronic Schematic Diagrams
Mechanical Specifications
Removal, Installation, and Replacement
- Cellular Communications/Digital Radio Antenna Replacement
- Communication Interface Module Battery Replacement
- Communication Interface Module Bracket Replacement
- Communication Interface Module Microphone Replacement
- Communication Interface Module Replacement
- Digital Radio Receiver Bracket Replacement
- Digital Radio Receiver Replacement
- Driver Information Display Replacement
- OnStar Button Assembly Replacement
- Radio Front Side Door Lower Speaker Replacement
- Radio Front Speaker Replacement
- Radio Rear Side Door Speaker Replacement
- Radio Rear Speaker Replacement
- Radio Replacement
- Radio Speaker Amplifier Replacement
