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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraints >> Diagnostic Information and Procedures >> DTC B0052, B0053, or B0055 >> Circuit/System Verification

Circuit/System Verification

IMPORTANT: The seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment. The SDM is capable of sustaining 3 pretensioner deployment events, or one frontal or side deployment event. After the maximum number of deployments has occurred, DTC B0052 sets and becomes a latched code, which cannot be cleared.
  1. Verify DTC B0053 is not set.
    • If DTC B0053 is set along with additional DTCs, other than B0052, repair the malfunction causing the DTCs before replacing the SDM.
  2. Verify DTC B0052 is not set.
    • If DTC B0052 is set, clear DTCs. If the DTC sets, replace the SDM.
  3. Verify DTC B0055 is not set.
    • If DTC B0055 is set, replace SDM.
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