Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1304 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Section 1304 (Cellular System, Entertainment System, And Navigation System)
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Section 1304 (Cellular System, Entertainment System, And Navigation System)
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Diagnostic Starting Point - Cellular, Entertainment, and Navigation
- DTC B0000
- DTC B1024
- DTC B1259
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC B1283-B1286
- DTC B2455
- DTC B2462
- DTC B2470
- DTC B2474
- DTC B2476 (old)
- DTC B2482
- DTC B2483 or B2484
- Symptoms - Cellular Communication
- Symptoms - Entertainment
- Symptoms - Navigation Systems
- Audio System Troubleshooting Hints
- Digital Radio Malfunction
- Digital Radio Receiver Setup
- OnStar Global Positioning System (GPS) Data Not Current or Inaccurate
- OnStar Microphone Inoperative - Caller Cannot Be Heard
- Navigation System - Poor or Inoperative TV Reception
- Navigation System - Voice Recognition Inoperative
- No (or Noisy) OnStar Audio
- No Global Positioning System (GPS) Reception
- Noise Compensated Volume Inoperative
- OnStar Button LED Inoperative
- OnStar Call Center Remote Function Requests Inoperative
- OnStar One or More Buttons Inoperative
- OnStar Reconfiguration (without TIS2web Gen 3 and prior)
- OnStar Reconfiguration (with TIS 2 Web Gen 4 and later)
- OnStar Symptom Diagnosis
- Radio Poor Reception
- Radio Setup
- Speaker Replacement Reference
- Speaker Malfunction
- Unable to Contact OnStar Call Center
- OnStar Voice Recognition Inoperative
- Repair Instructions
- Communication Interface Module Replacement
- Compact Disc Care and Cleaning
- Radio Replacement
- Digital Radio Receiver Replacement
- Radio Volume Compensator Interior Noise Microphone Replacement
- Radio Speaker Amplifier Replacement
- Mobile Telephone Digital Antenna Replacement
- Cellular Communications/Digital Radio Antenna Replacement
- Television Antenna Amplifier Replacement
- Radio Antenna Module Replacement
- Television Antenna Module Replacement
- Global Positioning System (GPS) Antenna Replacement
- Navigation Antenna Coaxial Cable Replacement
- Video Display Replacement
- Auxiliary Audio/Video Input Control Replacement
- Front Seat Speaker Replacement
- Front Upper Speaker Replacement
- Radio Front Side Door Lower Speaker Replacement
- Radio Front Floor Console Speaker Replacement
- Radio Rear Speaker Replacement (Center)
- Radio Rear Speaker Replacement (Right)
- Radio Rear Speaker Replacement (Left)
- Radio Rear Side Door Speaker Replacement
- Description and Operation
- Navigation System Description and Operation
- Notes
- Navigation System Components
- Navigation Radio
- Global Positioning System (GPS) Antenna
- TV and VICS Antenna - Export, w/YQ6, YQ7
- TV Antenna Module - Export, w/YQ6, YQ7
- TV Antenna Amplifiers - Export, w/YQ6, YQ7
- Auxiliary RCA Video Jacks
- VICS Module - Export, w/YQ7
- VICS Optical/Microwave Beacon Antenna - Export, w/YQ7
- Voice Recognition
- Bluetooth
- OnStar Description and Operation
- Notes
- Vehicle Communication Interface Module (VCIM)
- OnStar® Button Assembly
- OnStar® Microphone
- Cellular and Navigation Antennas
- OnStar® Sleep Cycle
- Deactivated OnStar® Accounts
- OnStar® Reconfiguration Procedure
- OnStar® Cellular, GPS, and Diagnostic Limitations
- OnStar® Personal Calling
- Operation of the Hands Free Cellular Phone
- OnStar® Steering Wheel Controls
- OPC Features
- Voice Feedback
- OPC Security/System Lock
- Nametags
- Mobile Identification Number and Mobile Directory Number
- Placing a Call
- Operation of the OnStar® Speech Recognition Systems
- Radio/Audio System Description and Operation
- Notes
- Radio Reception
- Diversity Antenna System
- Audio Amplifier
- Theftlock
- Radio Personalization w/ Home and Away Feature (If equipped)
- Radio Data System (RDS)
- RDS Basic Information
- Displaying Program Information
- Finding an RDS Station
- Using the RDS Traffic Feature
- Viewing Messages
- RDS Clock Time
- Steering Wheel Controls
- XM Satellite Radio
- Digital Radio Receiver
- Selecting a PTY
- Navigation System Description and Operation
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.