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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 602 (FIXED AND MOVEABLE WINDOWS SYSTEM)DESCRIPTION AND OPERATIONPOWER WINDOWS DESCRIPTION AND OPERATIONPOWER WINDOWS SYSTEM COMPONENTS
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Power Windows System Components
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Power Windows System Components
WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
The power windows system consists of the following components:
- Driver door module (DDM) - GMLAN device that receives and transmits messages and signals for window functionality
- Passenger front door module (PDM) - GMLAN device that receives and transmits messages and signals for window functionality
- Left rear door module (LRDM) - GMLAN device that receives and transmits messages and signals for window functionality
- Right rear door module (RRDM) - GMLAN device that receives and transmits messages and signals for window functionality
- Driver door switch assembly (DDSA) - GMLAN device that contains the driver, front passenger, RR and LR window and window lockout switches
- Right front power window switch - provides switched ground window switch signals to the PDM for the front passenger window
- Left rear power window switch - provides switched ground window switch signals to the LRDM for the left rear passenger window
- Right rear power window switch - provides switched ground window switch signals to the RRDM for the right rear passenger window
- Left front power window motor - contains position sensors and a module that receives signals from the DDM and provides a status signal to the DDM
- Right front power window motor - contains position sensors and a module that receives signals from the PDM and provides a status signal to the PDM
- Left rear power window motor - contains position sensors and a module that receives signals from the LRDM and provides a status signal to the LRDM
- Right rear power window motor - contains position sensors and a module that receives signals from the RRDM and provides a status signal to the RRDM
- DRIVER DR MOD fuse (10-amp)
- FRT PASS DR MOD fuse (15-amp)
- REAR DR MOD fuse (10 amp)
- Power Window Motors Circuit Breaker (30-amp)
RENDER: 1.0x
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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.