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Home >> Chevrolet >> 2018 >> Traverse LS, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Diagnostic Information and Procedures >> Cruise Control Malfunction - DTC B3794, P0564, P0565, P0567, P0568, P056C, P0580, P0581, P155A, P155B, P155C, or P162C >> Circuit/System Verification

Circuit/System Verification

  1. Ignition On/Vehicle in Service Mode.
  2. Verify that the stop lamps operate properly and that no B22 Brake Pedal Position Sensor related DTCs are set.
    • Go to next step: If no brake pedal position sensor related DTCs are set 
  3. Verify the scan tool K9 Body Control Module Cruise Control Switch Status parameter changes between Off and On, Resume and Set when switching between each position on the cruise control switch.
    • If the parameter does not change 

      Refer to Circuit/System Testing.

    • Go to next step: If the parameter changes 
  4. Verify that no conditions that may inhibit cruise control operation are present. Refer to the K20 Engine Control Module scan tool data list Cruise Control Inhibit Reason parameter. Refer to the Cruise Control Description and Operation  for a list of inhibit reasons.
    • If the cruise control system has a reason why it is inhibited 

      Repair the condition that is causing the inhibit reason.

    • Go to next step: If the cruise control system does not have any reasons why it may be inhibited 
  5. Verify that no cruise control related DTCs are set.
    • If any cruise control related DTCs are set 

      Refer to Circuit/System Testing.

    • Go to next step: If no cruise control related DTCs are set 
  6. All OK.
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