GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 38122-A Crankshaft Balancer Holder
    • J 45059 Angle Meter

Removal Procedure


    Object Number: 1578311  Size: SH
  1. Remove the transaxle. Refer to Transmission Replacement.
  2. Have an assistant install the J 38122-A , and a breaker bar to the crankshaft balancer in order to prevent the flywheel from rotating when loosening the flywheel bolts.
  3. Important: It may be necessary to remove the chamfer (bevel) from the edge of an 18 mm socket in order to get full engagement on the thin-headed flywheel bolts.

  4. Loosen, remove and discard the flywheel bolts.
  5. Important: Do not orientate the flywheel to the crankshaft. It is balanced separately from the engine.

  6. Remove the flywheel.
  7. Clean the thread adhesive from the flywheel bolt holes. Use a nylon bristle brush to clean the holes in the crankshaft.

Installation Procedure


    Object Number: 1578311  Size: SH
  1. Position the flywheel to the crankshaft.
  2. Install the NEW flywheel bolts until snug.
  3. Have an assistant install the J 38122-A , and a breaker bar to the crankshaft balancer in order to prevent the flywheel from rotating when tightening the flywheel bolts.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Tighten the flywheel bolts.
  6. Tighten
    Tighten the bolts to 53 N·m (39 lb ft) plus an additional 25 degrees using the J 45059 .

  7. Remove the J 38122-A and breaker bar.
  8. Install the transaxle. Refer to Transmission Replacement.