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Home >> GMC >> 2020 >> Terrain Denali, FWD >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Bolted Exterior Body Panels And Closures >> Diagnostic Information and Procedures >> DTC P257D-P257F >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Hood Position parameter is Open when the hood is open and Closed when the hood is closed.
    • If the parameter does not change 

      Refer to Circuit/System Testing.

    • Go to next step: If the parameter changes 
  3. All OK.
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