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 MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1243 (FIXED & MOVEABLE WINDOW SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER WINDOWS MALFUNCTIONCIRCUIT/SYSTEM TESTINGPOWER WINDOW SWITCH MALFUNCTION - FRONT
2006 Chevrolet Suburban C2500, 6.0 U
Power Window Switch Malfunction - Front
2006 Chevrolet Suburban C2500, 6.0 USECTION Power Window Switch Malfunction - Front
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Ignition ON, with a scan tool, observe the appropriate window switch parameters for the driver and front passenger window switches while activating all window switches to the UP, DOWN, and EXPRESS positions.
- If the readings do not change as the switches are activated, replace the appropriate door control module.
- Ignition OFF, disconnect the harness connector at the inoperative power window motor.
- Ignition OFF, test for less than 5.0 ohms between the power window motor ground circuit terminal 4 and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Ignition ON, test for B+ between the B+ circuit terminal 3 and ground.
- If less than the specified range, test the B+ circuit for a short to ground or an open/high resistance.
- If all circuits test normal, test or replace the inoperative power 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.