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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 U0078: Control Module Communication Low Speed CAN Bus Off >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC U0078 is not set.
    • Go to next step: If DTC U0078 is not set 
  3. All OK
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