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Home >> Buick >> 2017 >> Verano Base, Gas >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 2.4L (Lea) - DTC P0335 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P1255 or P064A: Fuel Pump Control Module (Chassis Control Module) >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC P0231, P0232 or P023F is not set.
    • If none of the DTCs are set 
  3. Verify that the area where the K38 Chassis Control Module is located is free of debris, clutter, or any insulating material that would cause the K38 Chassis Control Module to overheat.
    • If any debris, clutter, or other material is found 
    1. Clear the area where the K38 Chassis Control Module is located.
    2. Clear the DTC and test drive the vehicle.
    3. Verify DTC P1255 or P064A is not set.
      • If DTC P1255 or P064A is set, replace the K38 Chassis Control Module.
      • If DTC P1255 or P064A is not set
    4. All OK.
    • If no debris, clutter, or other material is found 
  4. Clear the DTC and test drive the vehicle.
  5. Verify DTC P1255 or P064A is not set.
    • If DTC P1255 or P064A is set 

      Replace the K38 Chassis Control Module.

    • If DTC P1255 or P064A is not set. 
  6. All OK.
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