GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2017603  Size: SH

    Note: Do not turn the crankshaft without the timing chain tensioner installed.

  1. Release the ratchet pawl, then fully push in the plunger and set the hook (1) to the pin (2) so that the plunger is in the position shown in the illustration.
  2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2017668  Size: SH

    Note: When installing the chain tensioner, set the hook again if the hook releases the plunger.

  3. Install a new gasket and the chain tensioner with the 2 nuts and tighten to 9.0 N·m (80 lb in).