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 2409 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESVIDEO ENTERTAINMENT SYSTEM MALFUNCTION (X88/Z88)CIRCUIT/SYSTEM VERIFICATION WITH DNU
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Circuit/System Verification with DNU
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Circuit/System Verification with DNU
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, vehicle in Park. Operate the DVD entertainment system using several known good DVD disks.
- If the radio does not display the DVD, replace the radio.
- RSE ON, observe the rear DVD screen(s). Verify the rear video display(s) operates normally.
- If the third row or second row video display does not operate normally, refer to circuit/system testing with DNU - One Display Not Functioning.
- If the third row and second row video displays do not operate normally, refer to circuit/system testing with DNU - Two Displays Not Functioning.
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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.