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Home >> Buick >> 2021 >> Envision Preferred, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Data Communications - Diagnostic Information And Procedures (1 Of 2) >> Diagnostic Information and Procedures >> DTC U1008 (P16 Instrument Panel Cluster Control Module) >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle In Service Mode.
  2. Verify that DTC U0073 - U007E, DTC U0100 - U02FF, DTC U1100 - U12FF, DTC U1600 - U17FF, DTC U2200 - U23FF, or DTC U2400 - U25FF is not set.
    • Go to next step: If none of the DTCs are set 
  3. Refer to Circuit/System Testing.
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