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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 Exhaust Actuator Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Mark the new exhaust camshaft actuator at the same point as the old exhaust camshaft actuator.
    2. NOTE:

    Ensure the timing chain and the camshaft position actuators are on their marked points.

    Ensure that the exhaust camshaft actuator fully fits in the exhaust camshaft.

  2. Rotate the exhaust camshaft clockwise with an open ended wrench slightly to fit the exhaust camshaft actuator in the exhaust camshaft.
    3. Fig 1: Camshaft Position Exhaust Actuator & Bolt
    GM2557046Courtesy of GENERAL MOTORS COMPANY
  3. Install the exhaust camshaft actuator (2) to the camshaft while also installing the actuator at the timing chain.
  4. Release tension slowly from the exhaust camshaft.
  5. Install the NEW camshaft position exhaust actuator bolt (1) handtighten.
  6. Remove both EN-48749  retention tool from the timing chain.
  7. Reset and install the timing chain tensioner. Refer to Timing Chain Tensioner Replacement .
    8. Fig 2: Crankshaft Locking Tool
    GM2557049Courtesy of GENERAL MOTORS COMPANY
  8. Install the EN-48953  locking tool (1) to the camshafts.
  9. Install the EN-48953  locking tool bolts an tighten to 10 N.m (89 lb in).
  10. Tighten the exhaust camshaft actuator (2) a first pass to 30 N.m (22 lb in).
    11. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  11. Tighten the exhaust camshaft actuator a final pass to an additional 100 degrees, using the EN-45059  meter.
  12. Remove the EN-48953  locking tool.
  13. Rotate the crankshaft clockwise at the crankshaft balancer bolt to 720 degrees and ensure that the marks are still fit. If the marks are not fit, refer to Camshaft Timing Chain, Sprocket, and Tensioner Replacement .
  14. Install the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
  15. Install the upper timing chain guide. Refer to Timing Chain Upper Guide Replacement .
  16. Install the spark plugs. Refer to Spark Plug Replacement .
  17. Install the camshaft cover. Refer to Camshaft Cover Replacement .
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