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 1121 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESVIDEO DISPLAY IS POOR OR BLANKCIRCUIT/SYSTEM TESTING
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Circuit/System Testing
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
With Third Row Video Screen
- Flip open the rear video displays. With the ignition ON, operate the rear entertainment system using several known good DVD disks. Observe the rear video screens.
- If both screens turn on but are blank, replace the radio.
- Note witch screen is malfunctioning. Remove both rear video displays. Swap the positions of the rear video screens and plug in the harness connectors. Operate the rear entertainment and observe the rear video screens.
- If the malfunctioning screen is not working in a different location, replace the suspect video screen.
- If the malfunctioning screen operates normally in a different location, Test or repair open, short to ground or short to voltage on the DVD video signal circuits.
- Test and repair open, short to ground and short to power on the ground and battery positive voltage circuits at both rear video displays.
- If the video display power and ground circuits test normal, replace the suspected rear video display.
IMPORTANT:
If rear video display does not turn ON, use diagnostic Video Entertainment System Inoperative .
Without Third Row Video Screen
- Flip open the rear video display. With the ignition ON, operate the rear entertainment system using several known good DVD disks. Observe the rear video screen.
- If the screen turns on but is blank. Test for an open, short to ground and short to power on the DVD video signal circuits to the rear video display. If the DVD video signal circuits test normal, replace the video display.
- If the video screen is still malfunctioning, replace the radio.
IMPORTANT:
If rear video display does not turn ON, use diagnostic Video Entertainment System Inoperative .
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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.