Tools Required

Important: It may be necessary to remove the chamfer from the edge of an 18 mm socket to obtain a full socket engagement on the thin headed flywheel bolts.

The flywheel can not be rotated to balance the flywheel to the engine because it can only be installed on the vehicle one way.
1. Remove the transmission assembly. Refer to Transmission Replacement in Automatic Transaxle - 4T40 - E/4T45 - E.
2. Remove the right splash shield. Refer to Wheelhouse Splash Shield Replacement in Body Front End.
3. Remove the flywheel attaching bolt while using J 38122-A to prevent crankshaft rotation.
4. Remove the flywheel and retainer.
5. The thread adhesive must be thoroughly removed from the flywheel.

1. Install the new bolts or apply adhesive/Sealant compound GM P/N 123454493 or equivalent to all flywheel to crankshaft bolts that are being re-used.
2. Carefully follow the instructions included with the thread locking compound to ensure proper bolt retention.



3. Install the flywheel and the attaching bolts.

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. While holding the crankshaft balancer with J 38122-A , tighten the attaching bolts.

Tighten
Tighten the bolts evenly to 30 N·m (22 lb ft), then rotate the bolts 45 degrees using J 36660-A .

5. Install the right splash shield. Refer to Wheelhouse Splash Shield Replacement in Body Front End.
6. Install the transmission assembly. Refer to Transmission Replacement in Automatic Transaxle - 4T40 - E/4T45 - E.