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Home >> GMC >> 2016 >> Terrain SL, Gas >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 3.6L (LFX) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Camshaft Position Actuator Replacement - Bank 2 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Rotating Camshaft Flats Parallel With Camshaft Cover Rail
    GM1306293Courtesy of GENERAL MOTORS COMPANY
  1. Remove the left camshaft cover. Refer to Camshaft Cover Replacement - Left Side .
  2. Remove the left intake and exhaust camshaft position sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake , and Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust .
  3. Remove the left intake and exhaust camshaft position actuator solenoids. Refer to Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake , and Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust .
    4. NOTE:

    Rotate the crankshaft balancer bolt in a clockwise direction ONLY.

  4. Rotate the crankshaft balancer using the balancer bolt until the camshafts are in a neutral (low tension) position. The camshafts will be parallel with the camshaft cover rail (1).
    5. Fig 2: Timing Chain & Camshaft Position Actuators Marking Locations
    GM1306391Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

  5. Use a paint stick to create an alignment mark on one of the timing chain links (2) and the adjacent tooth on the exhaust camshaft position actuator (1).
  6. Use a paint stick to create an alignment mark on one of the timing chain links (3) and the adjacent tooth on the intake camshaft position actuator (4).
    7. CAUTION:

    Refer to Torque Reaction Against Timing Drive Chain Caution .

  7. Use an open end wrench on the hex cast into the left intake and exhaust camshafts and rotate the camshafts toward each other in order to create slack in the chain between the actuators.
    8. Fig 3: Timing Chain Retention Tool
    GM1858601Courtesy of GENERAL MOTORS COMPANY
  8. Unscrew the EN-48313  tool so that the legs of the tool are retracted.
  9. Insert the EN-48313  tool between the camshaft actuators, rearward of the timing chain until the bottom line that is scribed in the body of the tool (2) is adjacent to the top surface of the cylinder head (1). This is the approximate installed position.
    10. Fig 4: Feet, Legs & Timing Chain Guide
    GM1858602Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The engine front cover is removed for clarity in the following graphics, but NOT required to perform the procedure.

  10. Ensure that the feet (4) on the legs of the tool are facing the front of the engine.
  11. Partially expand the legs (1, 3) of the EN-48313  tool by turning the T-shaped handle clockwise.
  12. Insert the leg of the tool (1) behind the timing chain guide (2).
  13. Continue expanding the EN-48313  tool until the legs (1, 3) contact the timing chain. Do not tighten at this time.
    14. Fig 5: Foot Of Timing Chain Retention Tool
    GM1858603Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure that the foot (1) of the EN-48313  tool is engaged into one of the link pockets to prevent tool slippage during tightening of the EN-48313  tool.

  14. Hand tighten the EN-48313  tool.
  15. Use an open end wrench on the hex cast into the left intake and exhaust camshafts and rotate the camshafts toward each other in order to create slack in the chain between the actuators.
    16. Fig 6: Timing Chain Retention Tool
    GM1858605Courtesy of GENERAL MOTORS COMPANY
  16. The EN-48313  tool is now properly installed to hold the timing chain in position.
    17. Fig 7: Camshaft Position Actuator And Bolt
    GM1858699Courtesy of GENERAL MOTORS COMPANY
  17. Use an open end wrench on the hex cast into the camshaft in order to prevent engine rotation when loosening the camshaft position actuator bolt.
  18. If replacing the exhaust camshaft position actuator, then remove the bolt and the actuator.
  19. If replacing the intake camshaft position actuator, then remove the bolt and the actuator.
  20. If removing both the exhaust and intake camshaft actuators, the timing chain can be draped over the EN-48313  tool once the actuators have been removed.
  21. Rotate the actuator in order to align the opening in the actuator reluctor wheel with the cam sensor boss in the front cover, to allow actuator removal.
  22. Remove the camshaft thrust washer.
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