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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 81 (Engine Controls And Fuel - 1.6L (LWC) - DTC P0243 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P1255 or P064A (Chassis Control Module) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify DTC P0231, P0232 or P023F is not set.
    • Go to next step: 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.
      • Go to next step: If DTC P1255 or P064A is not set
    4. All OK.
    • Go to next step: 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.

    • Go to next step: If DTC P1255 or P064A is not set. 
  6. All OK.
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