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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 858 (Sunroof System) >> Diagnostic Information and Procedures >> Power Sunroof Inoperative >> Circuit/System Verification

Circuit/System Verification

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.
  1. Verify that the Retained Accessory Power (RAP) circuit is functioning normally.
  2. Prior to performing sunroof system circuit diagnosis, perform the Sunroof Motor/Actuator Initialization/Teach Process (Extended Cab Existing Motor)  or Sunroof Motor/Actuator Initialization/Teach Process (Extended Cab New Motor)  or Sunroof Motor/Actuator Initialization/Teach Process (Crew Cab New Motor)  or Sunroof Motor/Actuator Initialization/Teach Process (Crew Cab Existing Motor) .