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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 873 (Fixed & MOVEABLE Window Systems) >> Diagnostic Information and Procedures >> Power Windows Malfunction (A31/AN3/DL3) >> Circuit/System Testing >> Notes

Circuit/System Testing: Notes

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Driver Window Malfunction

  1. Ignition OFF, disconnect the harness connector C1 at the DDS.
  2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or open/high resistance.
  3. Ignition OFF, reconnect the harness connector C1 at the DDS and disconnect the harness connector at the driver window motor.
  4. Connect a test lamp between control circuit terminal A and control circuit terminal B.
  5. Ignition ON, command the driver window UP and DOWN by using the driver 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, replace the DDS.
  6. If all circuits test normal, test or replace the driver window motor.
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