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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 B1000: Electronic Control Unit >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify DTC B1000 is not set.
    • If DTC B1000 is set 

      Replace the device that sets the DTC.

    • Go to next step: If DTC B1000 is not set 
  3. All OK
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