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Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia Limited, 2017 Chevrolet Traverse, and 2017 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine running for 10 seconds.
  2. Ignition ON, engine OFF, verify the DTC U0400 - U05FF is not set.
    • If the DTC U0400 - U05FF is set along with other DTCs set, diagnose all other codes first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
    • If the DTC U0400 - U05FF is set without other DTCs set, program the control module specified by the DTC descriptor. If the DTC resets, replace the appropriate control module.
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