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Home >> Buick >> 2013 >> Verano Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Shift Lock Control System >> Diagnostic Information and Procedures >> Transmission Control Lever Malfunction >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Brake Transmission Shift Interlock Solenoid Actuator Command parameter changes from Inactive to Active when the brake pedal is applied.
    • If the Brake Transmission Shift Interlock Solenoid Actuator Command does not change 

      Refer to Stop Lamps Malfunction

    • If the Brake Transmission Shift Interlock Solenoid Actuator Command changes 
  3. Verify the S3 transmission shift lever moves out of the PARK position when the brake pedal is applied.
    • If the S3 transmission shift lever does not move out of the PARK position 

      Refer to Circuit/System Testing .

    • If the S3 transmission shift lever does move out of the PARK position 

      All OK.