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Home › Buick › 2023 › Envision Preferred, AWD › Repair and Diagnosis › External Pages › Different car › Section 32 (Supplemental Restraints System) › Diagnostic Information and Procedures › DTC U3000 (K36 Restraints Control Module) › Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2021 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON/Vehicle In Service Mode, engine OFF.
  2. Verify DTC U3000 is not set.
    • If DTC U3000 is set with symptom byte 51, 54, 55, and 56. 
    1. Perform all necessary programming and setup procedures for the control module that sets the DTC.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the control module that sets the DTC.
      • Go to next step: If the DTC does not set
    3. All OK.
    • If DTC U3000 is set active or in history with any symptom byte, except 51, 54, 55, and 56. 

      Replace the control module that sets the DTC.

    • Go to next step: If DTC U3000 is not set 
  3. All OK
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