GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 36660-A Torque Angle Meter
    • J 44217 Timing Chain Retention Tool

Removal Procedure

  1. Remove the camshaft cover. Refer to Camshaft Cover Replacement .
  2. Rotate the engine until the word Delphi on the exhaust camshaft position actuator (1) is lined up parallel with the cylinder head to cam cover mating surface.

  3. Object Number: 1530242  Size: SH
  4. Using the timing mark on the exhaust camshaft position actuator sprocket as a reference, make a mark on the timing chain link across from it.

  5. Object Number: 812952  Size: SH
  6. Install the J-44217 (1).
  7. 4.1. Install the hook portion of the timing chain retention tools into one of the timing chain links near the timing chain shoe on both sides of the engine.
    4.2. Tighten the wingnuts.
    4.3. Ensure the hooks are still in one of the links and the gage blocks of the tool are firmly in place on the edge of the head.

    Object Number: 1530236  Size: SH
  8. Remove the exhaust camshaft position actuator bolt.
  9. Remove the exhaust camshaft position actuator.

Installation Procedure


    Object Number: 1530242  Size: SH
  1. Install the exhaust camshaft actuator into the timing chain.
  2. Align the marked link of the timing chain with the timing mark on the exhaust camshaft position actuator sprocket (1).
  3. Important: Ensure the alignment pin is engaged between the camshaft and the exhaust camshaft position actuator.

  4. Install the exhaust camshaft actuator onto the exhaust camshaft.
  5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1530236  Size: SH
  6. Install the exhaust camshaft actuator bolt.
  7. Tighten

        • Tighten the exhaust camshaft actuator bolt the first pass to 25 N·m (18 lb ft).
        • Use the J 36660-A to tighten the exhaust camshaft actuator bolt the final pass an additional 135 degrees.
  8. Remove the J-44217 .
  9. Install the camshaft cover. Refer to Camshaft Cover Replacement .