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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 992 (Fixed & MOVEABLE Window Systems) >> Diagnostic Information and Procedures >> Power Windows Malfunction (A31/AN3/DL3) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, observe the operation of the power windows while commanding each window UP and DOWN by using their respective window switches, each window should perform the UP and DOWN function.
    • If the driver window is inoperative, refer to Driver Window Malfunction.
    • If the front passenger window is inoperative, refer to Passenger Window Malfunction.
    • If either rear passenger power window is inoperative, refer to Rear Passenger Window Malfunction.
  2. Observe the scan tool Driver RF Window Switch, Driver LR Window Switch and Driver RR Window Switch parameters while using the driver master control switches. The parameter should change between Off/Up/Down/Express Down.
    • If the parameter does not change, replace the DDS.
  3. Observe the scan tool Window Lockout Switch parameter while pressing and depressing the window lockout switch on the driver master control. The parameter should change between On and Off.
    • If the parameter does not change, replace the DDS.