GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Important: 

       • A dual mass flywheel will produce a clacking noise if the engine has rough idle. Before replacing the flywheel due to a noise complaint, check the engine for misfiring, or rough operation at idle.
       • Rotate the primary flywheel against the secondary flywheel for a limited distance by hand in order to check for looseness.
       • This looseness does not impair the function of the flywheel, unless it exceeds the specifications in the measuring procedure that follows.

  1. Remove the clutch pressure plate and the clutch disc. Refer to Clutch Pressure and Driven Plate Replacement .

Measuring Procedure

In order to measure for excessive looseness of the dual mass flywheel complete the following procedure:


    Object Number: 14299  Size: SH
  1. Install 2 of the bolts used to retain the pressure plate to the flywheel across from each other in the secondary flywheel.
  2. Rotate the secondary flywheel by hand, using the bolts to help rotate the secondary flywheel against the primary flywheel clockwise until all looseness is removed.

  3. Object Number: 14344  Size: SH
  4. Release the flywheel and draw a mark on the secondary and primary flywheels.
  5. Repeat steps 2 and 3, only rotate the secondary flywheel counterclockwise.
  6. Measure the distance between the marks. If the measurement exceeds 35 mm (1.378 in.), replace the flywheel assembly. Refer to Engine Flywheel Replacement

Installation Procedure

  1. Install the clutch pressure plate and the clutch disc. Refer to Clutch Pressure and Driven Plate Replacement .