GM Service Manual Online
For 1990-2009 cars only

Tools Required

EN 46331 Timing Belt Tensioner Pulley Retaining Bolt


    Object Number: 897042  Size: SH

    Important: The powertrain control module (PCM) must perform the idle learn procedure to determine the minimum throttle position and to establish idle speed when any of the following components are replaced:

       â€¢ Throttle body
       â€¢ Timing belt
       â€¢ Timing belt drive sprocket
       â€¢ Crankshaft and bearings
    Refer to Idle Learn .

  1. Use the EN 46331 to retain the tensioner pulley. Tighten until snug.

  2. Object Number: 897043  Size: SH
  3. Loosen the idler pulley bolt (238) about 5 or 6 turns.

  4. Object Number: 897044  Size: SH
  5. Remove the belt (235).
  6. Remove the EN 46331 .