GM Service Manual Online
For 1990-2009 cars only

    Object Number: 760405  Size: SH
  1. Install the crankshaft sprocket.
  2. Apply prelube GM P/N 12345501, (Canadian P/N 992704) or the equivalent to the crankshaft sprocket thrust surface.

  3. Object Number: 59271  Size: SH
  4. Install the timing chain dampener.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the timing chain dampener bolts.
  7. Tighten
    Tighten the timing chain dampener bolt to 21 N·m (15 lb ft).


    Object Number: 660215  Size: SH
  8. Align the crankshaft timing mark (2) to the timing mark on the bottom of the timing chain dampener (1).
  9. Hold the camshaft sprocket with the timing chain hanging down and install the timing chain to the crankshaft gear.
  10. Align the timing mark on the camshaft gear (4) with the timing mark on top of the timing chain dampener (3).

  11. Object Number: 2041441  Size: SH
  12. Align the dowel in the camshaft with the dowel hole in the camshaft sprocket.
  13. Draw the camshaft sprocket onto the camshaft using the mounting bolts.
  14. Coat the crankshaft and camshaft sprocket with engine oil.
  15. Tighten
    Tighten the bolts to 16 N·m (12 lb ft).