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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1006 (OBJECT DETECTION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESREAR PARKING ASSIST MALFUNCTIONCIRCUIT/SYSTEM TESTINGNOTES
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Circuit/System Testing: Notes
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Notes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Rear Vision System Always On
- Ignition ON, observe the backup lamps. The backup lamps should be off.
- If the lamps are illuminated test the signal circuit for a short to power. Refer to Backup Lamps Always On
to diagnose the backup lamp circuit.
- If the above condition is found, make the appropriate repair.
- Replace the rear view camera image display module.
No Video - Radio Displays "Service Rear Vision Camera System"
- Ignition ON, test the ignition 1 voltage circuit and ground circuit to the rear view camera image display module for a short to ground, a high resistance, or an open. Verify that a short to ground, a high resistance, or an open does not exist.
- If any of the above conditions are found, make the appropriate repair
- Ignition OFF, disconnect the harness connector at the rear view camera.
- Ignition ON, with the scan tool enable the backup lamps. Test for 6-volt power source at the rear view camera harness connector pins 1 (+6V) and 2 (GND).
- If the 6-volt power supply circuit does not test normal, test for 6 volts at the rear view camera image display module.
- If the 6-volt power supply source tests normal at the rear view camera image display module, then repair the harness.
- If the 6-volt power supply source does not test normal, replace the rear view camera image display module.
- If the 6-volt power supply circuit tests normal, then test the video signal circuits for short to power, ground or an open/high resistance.
- If the video circuits test normal, replace the rear view camera.
- If after replacing the rear view camera and the system does not function properly, then replace the rear view camera image display module.
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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.