GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 G6 🢒 Engine 🢒 Engine Mechanical - 2.8L, 3.0L, 3.2L, or 3.6L 🢒 Camshaft Replacement - Left Side

Special Tools

    • EN 46108 Timing Chain Retention Tool
    • EN 46111 Crankshaft Rotation Socket

Removal Procedure
  1. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  2. Remove the left bank camshaft cover. Refer to Camshaft Cover Replacement - Left Side .
  3. Remove the camshaft sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust and Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake .
  4. Remove the camshaft position actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake .
  5. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .

    6. Object Number: 1306293 Size: SH
  6. Rotate the crankshaft with the EN 46111 until the camshafts are in a neutral (low tension) position. The camshaft flats will be parallel with the camshaft cover rail (1).

    7. Notice: Refer to Torque Reaction Against Timing Drive Chain Notice in the Preface section.


    Object Number: 1340931 Size: SH

    Important: 

       • Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.
       • DO NOT remove the camshaft position actuator bolt at this time.

  7. Loosen the camshaft position actuator bolt.

    8. Important: Ensure that the tips of the EN 46108 are fully engaged into the timing chain (3 and 4).


    Object Number: 1341287 Size: SH
  8. Install the EN 46108 (1 and 2) in order to retain the timing chain.

    9. Firmly tighten the EN 46108 nuts.


    Object Number: 1306391 Size: SH

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

  9. Mark the timing chain and the respective locations on the camshaft position actuators (1-4).
  10. Remove the camshaft position actuator bolt.
  11. Remove the camshafts. Refer to Camshaft Removal - Left Side .

Installation Procedure

    Object Number: 1306391 Size: SH

    Important: 

       • Ensure that the marks on the camshaft position actuator and the timing chain (1-4) are aligned.
       • DO NOT tighten the camshaft position actuator bolt at this time.

  1. Locate the camshafts to the cylinder head and assemble the camshaft actuators to the camshafts.
  2. Install the camshafts and the camshaft bearing caps. Refer to Camshaft Installation - Left Side .
  3. Remove the EN 46108 .

    4. Notice: Refer to Torque Reaction Against Timing Drive Chain Notice in the Preface section.


    Object Number: 1340931 Size: SH

    Important: Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.

  4. Install and tighten the camshaft position actuators. Refer to Camshaft Position Actuator Installation - Left Side Intake and Camshaft Position Actuator Installation - Left Side Exhaust .
  5. Install the intake camshaft position actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake .
  6. Install the camshaft sensors. Refer to Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust and Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake .
  7. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
  8. Install the camshaft cover. Refer to Camshaft Cover Replacement - Left Side .
  9. Install the lower intake manifold. Refer to Lower Intake Manifold Replacement .