GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 37096 Flywheel Holder


    Object Number: 309963  Size: SH
  1. Remove the transaxle. Refer to Transmission Replacement in Automatic Transaxle -- 4T65-E.
  2. Use the J 37096 in order to prevent crankshaft rotation.

  3. Object Number: 153602  Size: SH
  4. Loosen the eight engine flywheel bolts.
  5. Remove seven of the eight engine flywheel bolts, leaving one bolt at the top of the crankshaft rotation.
  6. Firmly grasp the engine flywheel and remove the remaining bolt. Do not drop the engine flywheel when removing the final bolt.
  7. Remove the engine flywheel.

Installation Procedure

Tools Required

    • J 36660-A Torque Angle Meter
    • J 37096 Flywheel Holder

    Object Number: 153602  Size: SH
  1. Install the engine flywheel.
  2. Use the J 37096 in order to prevent the crankshaft from rotating.
  3. 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.

  4. Install the new engine flywheel bolts.
  5. Tighten
    Tighten the engine flywheel bolts to 15 N·m (11 lb ft). Use the J 36660-A in order to rotate the engine flywheel bolts an additional 50 degrees.

    Important: The crankshaft end play must be held in one direction during this check.

  6. Use the following procedure to measure engine flywheel runout:
  7. 4.1. Install a dial indicator on the engine block and check the engine flywheel runout at three attaching bosses. Refer to Engine Mechanical Specifications .
    4.2. If the runout is not within the specification and cannot be corrected, replace the engine flywheel.
  8. Install the transaxle. Refer to Transmission Replacement in Automatic Transaxle -- 4T65-E.