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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 172 (Lighting Systems) >> Diagnostic Information & Procedures >> DTC C0277, C0297, or C0890 >> Circuit/System Verification

Circuit/System Verification

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  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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