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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Vehicle Access >> Diagnostic Information and Procedures >> DTC B1023 >> Circuit/System Verification

Circuit/System Verification

  1. Install a scan tool and display the inputs data list of the affected door module.
    • If any of the integrated switch inputs are displayed as Active while in an inactive state, replace the door module.
  2. Clear the DTCs.
  3. Activate all of the integrated switch functions.
    • If the DTC resets, replace the affected door module.
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