GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2017640  Size: SH
  1. Install the crankshaft timing sprocket (1) to the crankshaft.
  2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2017660  Size: SH
  3. Install the chain vibration damper with the 2 bolts (1).
  4. Tighten
    Tighten the bolts to 9.0 N·m (80 lb in).


    Object Number: 2017661  Size: SH
  5. Install chain sub-assembly.
  6. Set the No. 1 cylinder to TDC/compression.
  7. Turn the camshafts with a wrench (using the hexagonal lobe) to align the timing marks (2) on the camshaft timing gear with the timing marks located on the No. 1 and No. 2 bearing caps (1) as shown in the illustration.

  8. Object Number: 2017662  Size: SH
  9. Using the crankshaft pulley bolt, turn the crankshaft to position the key on the crankshaft upward.

  10. Object Number: 2017663  Size: SH
  11. Install the chain onto the crankshaft timing sprocket with the gold orange mark link (2) aligned with the timing mark (1) on the crankshaft.

  12. Object Number: 2017664  Size: SH
  13. Using a suitable tool (1) and a hammer, tap in the crankshaft timing sprocket.

  14. Object Number: 2017665  Size: SH
  15. Align the gold or yellow links (1) with the timing marks (2) located on the camshaft timing gear and sprocket, then install the chain.

  16. Object Number: 2017666  Size: SH
  17. Install the chain tensioner slipper with the bolt (1).
  18. Tighten
    Tighten the bolt to 19 N·m (14 lb ft).


    Object Number: 2017636  Size: SH
  19. Install the timing chain guide with the bolt (1).
  20. Tighten
    Tighten the bolt to 9.0 N·m (80 lb in).