GM Service Manual Online
For 1990-2009 cars only

Cleaning Procedure

    Note: In order to maintain the proper component balance, contact surface taper and heat transfer, manual transmission flywheels are NOT to be machined.

  1. Clean the engine flywheel in solvent.
  2. Warning: Refer to Safety Glasses Warning in the Preface section.

  3. Dry the engine flywheel with compressed air.

Inspection Procedure


    Object Number: 1972803  Size: SH
  1. Inspect the engine flywheel for the following conditions:
  2. • Stress cracks around the engine flywheel-to-torque converter mounting bolt hole locations (1) and/or engine flywheel-to-crankshaft (2, 4)

       Note: Do not attempt to repair the welded areas that retain the ring gear to the engine flywheel plate. Install a new engine flywheel.

    • Cracks at welded areas that retain the ring gear onto the engine flywheel (3)
    • Damaged or missing ring gear teeth (5)
  3. Replace the engine flywheel as necessary.