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Home >> Buick >> 2015 >> Verano Premium, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 2.4L (Lea)) >> Repair Instructions - On Vehicle >> Camshaft Position Intake Actuator Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the spark plugs. Refer to Spark Plug Replacement .
  2. Remove the upper timing chain guide. Refer to Timing Chain Upper Guide Replacement .
  3. Remove the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
    4. Fig 1: Crankshaft Locking Tool
    GM2557049Courtesy of GENERAL MOTORS COMPANY
  4. Rotate the crankshaft clockwise at the crankshaft balancer bolt and install the EN-48953  locking tool (1) to the camshafts.
    5. CAUTION:

    Refer to Fastener Caution .

  5. Install the EN-48953  locking tool bolts an tighten to 10 N.m (89 lb in).
    6. Fig 2: Camshaft Position Exhaust Actuator & Bolt
    GM2557046Courtesy of GENERAL MOTORS COMPANY
  6. Loosen, but DO NOT remove, the camshaft position exhaust actuator bolt (1).
    7. Fig 3: Camshaft Intake Actuator & Bolt
    GM2557044Courtesy of GENERAL MOTORS COMPANY
  7. Loosen, but DO NOT remove, the camshaft position intake actuator bolt (1).
  8. Remove the EN-48953  locking tool.
    9. Fig 4: Timing Chain & Camshaft Bearing Cover Marks
    GM2583731Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure the timing chain and the camshaft position actuators are marked for proper assembly.

  9. Mark the intake and exhaust camshaft actuators and the respective locations on the timing chain (1). Mark additional the position from each camshaft actuator to the camshaft bearing cover (2).
  10. Remove the timing chain tensioner. Refer to Timing Chain Tensioner Replacement .
    11. Fig 5: Timing Chain Retention Tool On Intake Side
    GM2557061Courtesy of GENERAL MOTORS COMPANY
  11. Install the EN-48749  retention tool (1) to the intake side of the timing chain.
    12. Fig 6: Timing Chain Retention Tool On Exhaust Side
    GM2557062Courtesy of GENERAL MOTORS COMPANY
  12. Install the EN-48749  retention tool (1) to the exhaust side of the timing chain.
  13. Remove and DISCARD the camshaft position exhaust actuator bolt (1).
    14. Fig 7: Open Ended Wrench & Actuator Bolt
    GM2557103Courtesy of GENERAL MOTORS COMPANY
  14. Rotate the exhaust camshaft clockwise with an open ended wrench slightly to take the tension off of the timing chain.
  15. Remove the exhaust camshaft actuator (2) from the camshaft while also removing the actuator from the timing chain.
  16. Release tension from the exhaust camshaft and allow the exhaust camshaft to slide back slowly.
    17. Fig 8: Camshaft Intake Actuator & Bolt
    GM2557044Courtesy of GENERAL MOTORS COMPANY
  17. Remove and DISCARD the camshaft position intake actuator bolt (1).
  18. Remove the intake camshaft actuator (2) from the camshaft while also removing the actuator from the timing chain.
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