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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1293 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC C0277, C0297, or C0890 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, verify that the DTC is set as current and that no other vehicle system DTCs exists.
    • If other vehicle system DTCs exists, address these DTCs before proceeding with this diagnostic test.
  2. Cycle the ignition OFF then ON, clear the DTC with a scan tool and verify that the DTC does not reset as current.
    • If the DTC resets as current, replace the BCM.
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