Installation Procedure

1. Use a wrench in order to align the camshaft timing marks.

   Be sure to place the wrench on the hexagonal portion of the camshafts.

   Fig 1: Aligning Camshaft Timing Marks

   Courtesy of GENERAL MOTORS CORP.
2. Turn the camshafts in order to align the timing marks.
   Fig 2: Aligning Timing Marks

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3. Temporarily install the crankshaft bolt.
4. Turn the crankshaft until the crankshaft keyway (1) faces upward.
   Fig 3: Facing Crankshaft Keyway Upward

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5. Install the following components:
   • The timing chain (2)

     Install the timing chain on the crankshaft timing sprocket with the yellow color link aligned with the mark on the crankshaft timing sprocket.

   • The crankshaft timing sprocket
     Fig 4: Installing Crankshaft Timing Sprocket And Timing Chain

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   NOTE: Refer to FASTENER NOTICE .
6. Install the timing chain shoe. Secure the timing chain shoe using 2 bolts (1, 2).

   Tighten 

   Tighten the timing chain shoe bolts to 10 N.m (89 lb in).

   Fig 5: Installing Timing Chain Shoe

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7. Install the timing chain (1) onto the camshafts timing sprockets (3).

   Ensure that the timing chain links (yellow timing chain links) are aligned with the timing marks.

   Fig 6: Installing Timing Chain Onto Camshafts Timing Sprockets

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8. Install the timing chain dampener. Secure the timing chain dampener using 1 bolt (1).

   Tighten 

   Tighten the timing chain dampener bolt to 18 N.m (14 lb ft).

   Fig 7: Installing Timing Chain Dampener

   Courtesy of GENERAL MOTORS CORP.
9. Install the crankshaft sensor reluctor (1) onto the crankshaft. Insure that the F on the reluctor is facing outward.
10. Apply a continuous bead of GM P/N 12346240 (Canadian P/N 10953493) or an equivalent to the timing chain cover mating surface.
    Fig 8: Installing Crankshaft Sensor Reluctor Onto Crankshaft

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11. Install the timing chain cover.
    Fig 9: Installing Timing Chain Cover

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    Use the following fasteners in order to secure the cover:

    • Fifteen bolts (1-14)
    • One nut (15)

      Tighten 

      • Tighten the timing chain cover nut and bolts (10 mm (0.394 in) head) to 10 N.m (89 lb in).
      • Tighten the timing chain cover nut and bolts (12 mm (0.394 in) head) to 18 N.m (14 lb ft).
12. Use the following steps in order to install the timing chain tensioner:
    1. 12.1 Fully depress the plunger (4).
    2. 12.2 Apply the hook (2) to the pin (3).
    3. 12.3 Install the timing chain tensioner.
    Fig 10: Preparing Timing Chain Tensioner

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13. Install the timing chain tensioner. Secure the timing chain tensioner using 2 bolts (1).

    Tighten 

    Tighten the timing chain tensioner bolts to 10 N.m (89 lb in).

    Fig 11: Installing Timing Chain Tensioner

    Courtesy of GENERAL MOTORS CORP.
14. Install the right side engine mounting bracket. Secure the bracket using 3 bolts.

    Tighten 

    Tighten the engine mounting bracket bolts to 54 N.m (40 lb ft).

15. Install the drive belt tensioner. Secure the tensioner using 1 bolt and one nut.

    Tighten 

    • Tighten the bolt to 69 N.m (51 lb ft).
    • Tighten the nut to 29 N.m (21 lb ft).
16. Raise the vehicle. Support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
17. Install the crankshaft position sensor. Secure the sensor using 1 bolt (5).

    Tighten 

    Tighten the crankshaft position sensor bolt to 12 N.m (106 lb in).

    Fig 12: Installing Crankshaft Position Sensor

    Courtesy of GENERAL MOTORS CORP.
18. Install the crankshaft pulley. Secure the crankshaft pulley using 1 bolt.

    Tighten 

    Tighten the crankshaft pulley to 142 N.m (105 lb ft).

    Fig 13: Installing Crankshaft Pulley

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19. Install the power steering pump.
    Fig 14: Installing Power Steering Pump

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20. Use the following fasteners in order to secure the power steering pump:
    • Two bolts (1)
    • Two nuts

      Tighten 

      Tighten the power steering pump bolts to 37 N.m (27 lb ft).

21. Install the right engine splash shield. Refer to SPLASH SHIELD REPLACEMENT - ENGINE - LEFT in Body Front End.
22. Lower the vehicle.
23. Connect the power steering oil pressure switch connector.
24. Rotate the crankshaft clockwise 1 revolution. Ensure that the plunger on the timing chain tensioner has released.
    Fig 15: Rotating Crankshaft

    Courtesy of GENERAL MOTORS CORP.

    Complete the following steps if the plunger does not release:

    • Use a screwdriver or your finger in order to press the timing chain dampener into the timing chain tensioner.
    • Release the hook from the pin.
    • Verify proper timing chain alignment after the plunger has released.
25. Install the cylinder head cover.
26. Install the engine mount. Refer to ENGINE MOUNT REPLACEMENT  .
27. Remove the engine support fixture.
28. Install the generator. Refer to GENERATOR .
29. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
30. Connect the negative battery cable.

Tighten 

Tighten the battery cable bolt to 15 N.m (11 lb ft).