GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the transmission.
  2. • For manual transmissions, refer to Transmission Removal in Manual Transmission.
    • For automatic transmissions, refer to Transmission Replacement in Automatic Transmission.

    Object Number: 16515  Size: SH
  3. Remove the engine flywheel bolts.
  4. Remove the engine flywheel.

Installation Procedure

Important: To retain proper engine balance, flywheel balance weights must be installed using the following procedure:

   • If a flywheel is replaced, inspect the old flywheel to see if balance weights have been inserted in any of the 24 weight holes.
   • If there are weights installed on the old flywheel, new balance weights must be installed on the new flywheel in the same hole locations as found on the old flywheel, relative to the crankshaft dowel pin.
   • Install weights that are 12.7 mm (0.50 in.) in length.
   • Install weights into the appropriate holes until a flush fit is obtained.


    Object Number: 16515  Size: SH
  1. Install the engine flywheel to crankshaft.
  2. Align the locator hole to the pin.
  3. Install the engine flywheel bolts.
  4. Tighten
    Tighten the engine flywheel bolts to 100 N·m (74 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the transmission.
  6. • For manual transmissions, refer to Transmission Installation in Manual Transmission.
    • For automatic transmissions, refer to Transmission Replacement in Automatic Transmission.