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Home >> GMC >> 2021 >> Acadia SL >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Secondary And Configurable Customer Controls >> Diagnostic Information and Procedures >> Drive Mode Switch Malfunction >> Circuit/System Verification
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Circuit/System Verification

  1. Verify that no DTCs are set, except P159F, P15A0 or P15A1.
    • Go to next step: If only DTCs P159F, P15A0 or P15A1 are set 

      Go to next step: Refer to Circuit/System Testing.

    • Go to next step: If no DTCs are set 
  2. All OK.
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