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 809 (FIXED AND MOVEABLE WINDOWS)DIAGNOSTIC INFORMATION AND PROCEDURESREAR WINDOW DEFOGGER INOPERATIVECIRCUIT/SYSTEM VERIFICATION
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Circuit/System Verification
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Circuit/System Verification
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, observe the scan tool BCM Rear Defog Switch parameter while pressing the rear window defogger switch. The reading should change between ON and OFF.
- If the reading does not change between the commanded states, refer to Rear Defogger Switch Malfunction .
- Command the rear window defogger ON and OFF with a scan tool. The rear window defogger and rear window defogger indicator should turn ON and OFF when changing between the commanded states.
- If the rear window defogger does not turn ON and OFF when changing between the commanded states, refer to Rear Defogger Malfunction .
- If the Defogger indicator does not illuminate, replace the HVAC control 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.