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 PROCEDURESPOWER WINDOWS INOPERATIVE - ALLCIRCUIT/SYSTEM TESTINGREAR POWER WINDOW INOPERATIVE
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Rear Power Window Inoperative
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Rear Power Window Inoperative
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 OFF, disconnect the harness connector at the appropriate rear passenger Window Switch.
- Ignition OFF, test for less than 1 ohm of resistance between the control circuit terminal 4 and ground.
- If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the appropriate front Window Switch.
- Ignition OFF, test for less than 1 ohm of resistance between the control circuit terminal 1 and ground.
- If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the appropriate front Window Switch.
- Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 3 and ground.
- If the test lamp does not illuminate and the Rear Window Lockout Switch is CLOSED, test the B+ circuit for an open/high resistance.
- Connect a test lamp between the control circuit terminal 4 and control circuit terminal 1.
- Ignition ON, command the appropriate rear passenger window UP and DOWN by pressing the appropriate window control on the appropriate front Window Switch. The test lamp should illuminate during either of the commands.
- If the test lamp is always OFF, test for a short to ground on either control circuit. If all circuits test normal, test or replace the appropriate front Window Switch.
- Ignition OFF, reconnect the appropriate rear passenger Window Switch.
- Ignition OFF, disconnect the harness connector at the appropriate rear passenger Window Motor.
- Ignition OFF, test for less than 1 ohm of resistance between the control circuit terminal A and ground.
- If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the appropriate rear passenger Window Switch.
- Ignition OFF, test for less than 1 ohm of resistance between the control circuit terminal B and ground.
- If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the appropriate rear passenger Window Switch
- Connect a test lamp between control circuit terminal A and control circuit terminal B.
- Ignition ON, command the appropriate rear passenger window UP and DOWN by pressing the appropriate rear passenger Window Switch. The test lamp should turn ON when commanding the UP and DOWN states.
- If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, test or replace the appropriate rear passenger Window Switch.
- If all circuits test normal, test or replace the appropriate rear passenger Window Motor.
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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.