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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 1.5L (LYX)) >> Repair Instructions - On Vehicle >> Camshaft Position Actuator Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Apply lubricant to the back of the camshaft position actuators and front of the camshaft bearing cap. Adhesives, Fluids, Lubricants, and Sealers 
  2. If installing the intake camshaft position actuator, proceed to step 9.
    3. Fig 1: Exhaust Camshaft Position Actuator
    GM4868965Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure the proper camshaft position actuator is installed in the correct position. Failure to install the proper camshaft position actuator can effect engine performance and set an engine code.

  3. Lower the exhaust camshaft position actuator (1) into place below the timing chain (2)
    4. Fig 2: Exhaust Camshaft Position Actuator And Timing Chain
    GM4868808Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The timing mark on the camshaft position actuator needs to be aligned to the corresponding timing mark that was applied to the timing chain prior to removal of the camshaft position actuator.

  4. Raise the exhaust camshaft position actuator (1) to engage the timing chain (2).
    5. Fig 3: Dowel Pin And Camshaft Slot
    GM4868970Courtesy of GENERAL MOTORS COMPANY
  5. Adjust the camshaft until the dowel pin (1) aligns with the camshaft slot (2).
    6. Fig 4: Prying Camshaft Toward Rear/Flywheel End Of Engine
    GM4170757Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Do not pry against the face of the camshaft position actuators or the position actuator retaining bolts as the position actuators will be damaged.

  6. Position a screwdriver or small pry bar between a camshaft cap and camshaft lobe. Carefully pry the camshaft forward.
  7. Ensure the exhaust camshaft position actuator is seated properly on the end of the camshaft.
    8. Fig 5: Exhaust Camshaft Position Actuator Bolt
    GM4868090Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Install the camshaft position actuator bolt snugly but to not torque at this step.

  8. Install the NEW exhaust camshaft position actuator bolt (1).
    9. Fig 6: Intake Camshaft Position Actuator
    GM4869055Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure the proper camshaft position actuator is installed in the correct position. Failure to install the proper camshaft position actuator can effect engine performance and set an engine code.

  9. Lower the intake camshaft position actuator (1) into place below the timing chain.
    10. Fig 7: Intake Camshaft Position Actuator And Timing Chain
    GM4867895Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The timing mark on the camshaft position actuator needs to be aligned to the corresponding timing mark that was applied to the timing chain prior to removal of the camshaft position actuator.

  10. Raise the intake camshaft position actuator (1) to engage the timing chain (2).
    11. Fig 8: Dowel Pin And Camshaft Slot
    GM4868970Courtesy of GENERAL MOTORS COMPANY
  11. Adjust the camshaft until the dowel pin (1) aligns with the camshaft slot (2).
    12. Fig 9: Prying Camshaft Toward Rear/Flywheel End Of Engine
    GM4170757Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Do not pry against the face of the camshaft position actuators or the position actuator retaining bolts as the position actuators will be damaged.

  12. Position a screwdriver or small pry bar between a camshaft cap and camshaft lobe. Carefully pry the camshaft forward.
  13. Ensure the intake camshaft position actuator is seated properly on the end of the camshaft.
    14. Fig 10: Intake Camshaft Position Actuator Bolt
    GM4868075Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Install the camshaft position actuator bolt snugly but to not torque at this step.

  14. Install the NEW intake camshaft position actuator bolt (1).
    15. Fig 11: Camshaft Position Actuator Marks And Timing Chain Marks
    GM4091103Courtesy of GENERAL MOTORS COMPANY
  15. Ensure the marks of the camshaft position actuators (2) are matched to the marks of the camshaft timing chain (1).
    16. Fig 12: Camshaft Holder
    GM4091100Courtesy of GENERAL MOTORS COMPANY
  16. Install the EN-51367  Camshaft Locking Tool (1).
    17. Fig 13: Camshaft Position Actuator Bolts
    GM4091117Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

    NOTE:

    Counterhold the camshaft with a suitable tool.

  17. Camshaft Position Actuator Bolt (1) - Tighten

    Tighten

    1. First pass to 20 N.m (15 lb ft)
    2. Final pass to an additional 90 degrees using the EN-45059  Torque Angle Sensor Kit
    18. Fig 14: Camshaft Holder
    GM4091100Courtesy of GENERAL MOTORS COMPANY
  18. Remove the EN-51367  Camshaft Locking Tool (1).
    19. Fig 15: Timing Chain Retainer And Camshaft Timing Chain
    GM4869144Courtesy of GENERAL MOTORS COMPANY
  19. Loosen the bolt.(6)[2x]
  20. Loosen the bolt.(1, 4)[2x]
  21. Remove EN-51397-2  Timing Chain Retainer (2).
  22. Remove EN-51397-1  Timing Chain Retainer (5).
  23. Install Timing Chain Upper Guide - Timing Chain Upper Guide Replacement 
  24. Check the position of the crankshaft, camshaft and camshaft position actuator.
    25. Fig 16: Crankshaft Balancer Markings
    GM3682494Courtesy of GENERAL MOTORS COMPANY
  25. Turn crankshaft 720 degrees in the direction of engine rotation using the crankshaft balancer bolt (3).
  26. Adjust the engine to cylinder 1 TDC of combustion stroke. Using the crankshaft balancer bolt (3), rotate the crankshaft in direction of engine rotation until the markings (1, 2) line up.
    27. Fig 17: Camshaft Holder
    GM4091100Courtesy of GENERAL MOTORS COMPANY
  27. Install the EN-51367  Camshaft Locking Tool.
  28. If the EN-51367  Camshaft Locking Tool can be installed, the engine timing is properly adjusted.
  29. Remove the EN-51367  Camshaft Locking Tool
    30. NOTE:

    Perform step 19 if the Intake camshaft position actuator was removed.

  30. Install Fuel Pump - Fuel Pump Replacement
  31. Install Camshaft Cover - Camshaft Cover Replacement 
  32. Install Air Cleaner Assembly - Air Cleaner Assembly Replacement
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