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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Data Communication System - Diagnostic Information And Procedures (B1000 To U1833) >> Diagnostic Information And Procedures >> DTC B101E: Electronic Control Unit Software >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify that DTC U0028 or U0029 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Verify DTC B101E is not set.
    • If DTC B101E is set 
    1. Program the device that sets the DTC.
    2. Verify the DTC does not set.
      • If the DTC sets, replace the device that sets the DTC.
      • If the DTC does not set
    3. All OK.
    • Go to next step: If DTC B101E is not set 
  4. All OK
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