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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Diagnostic Information and Procedures >> DTC P158A: Cruise Control Calibration Incorrect >> Circuit/System Verification
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Circuit/System Verification

  1. Verify that no DTCs are set, except DTC P158A.
    • If only DTC P158A is set 
  2. Reprogram the K9 Body Control Module and the K20 Engine Control Module one after the other. Do not place the Ignition On/Vehicle in Service Mode between each programming event.
  3. Verify DTC P158A does not set when operating the vehicle within the conditions for running the DTC.
    • If the DTC does not set 
  4. All OK.
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