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 G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 883 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESVIDEO ENTERTAINMENT SYSTEM WIRELESS HEADPHONE MALFUNCTIONCIRCUIT/SYSTEM TESTING
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Circuit/System Testing
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the infrared transmitter.
- Test for less than 5.0 ohms between the ground circuit terminal 12 and ground.
- If greater than specified range, test the ground circuit for an open/high resistance.
- Ignition ON, DVD playing, test for B+ between the infra red module control circuit terminal 4 and ground.
- If less than specified value, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear seat audio module.
- Ignition ON, DVD playing, test for AC voltage between the following signal circuit terminals listed below and ground.
- Left DVD audio signal (+) - terminal 1
- DVD audio common (-) - terminal 2
- Right DVD audio signal (+) - terminal 3
- If AC voltage is not present, test the signal circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the radio.
- Ignition ON, RSA ON, test for AC voltage between the following signal circuit terminals listed below and ground.
- Left infra red audio signal (+) - terminal 9
- Infra red audio low reference (-) - terminal 10
- Right infra red audio signal (+) - terminal 11
- If AC voltage is not present, test the signal circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the RSA.
- If all circuits test normal, test or replace the infrared transmitter.
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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.