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Home >> Buick >> 2015 >> Verano Leather >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Controls And Fuel - 2.0L (LHU) - Repair Instructions) >> Repair Instructions >> Turbocharger Wastegate Actuator Adjustment

Turbocharger Wastegate Actuator Adjustment

WARNING: This page is about a different variant/trim than selected.
  1. Lift and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Allow the engine to cool down.
  3. Fig 1: Wastegate Arm Lock Nuts & Retainer Clips
    GM2739127Courtesy of GENERAL MOTORS COMPANY
  4. Remove the retainer clip (3).
  5. Loosen the lock nut (2).
  6. Hand tighten the lock nut (1) until it is seated on the wastegate arm and slight spring tension is observed.
  7. NOTE:
    • Ensure the wastegate actuator rod does not rotate during the tightening procedure. If the rod does rotate, it will be necessary to start the procedure again.
    • After the lock nut (1) has been tightened three complete turns, it should not move for the remainder of the procedure.
  8. Mark the lock nut (1) with a paint pen to mark a starting position and tighten three complete turns.
  9. CAUTION:

    Refer to Fastener Caution .

  10. While holding the wastegate rod tighten the nut (2) loosely.
  11. Tighten the nut (2) while holding nut (1) in place to 10 N.m (89 lb in). Apply thread lock agent to the wastegate actuator rod threads on both sides.
  12. Install the retainer clip (3).