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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U0400 - U05FF: Control Module >> Circuit/System Verification
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Circuit/System Verification

  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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