For 1990-2009 cars

#### Tools Required

• | J 36660-A Torque/Angle Meter

• | J 42067 Rear Main Oil Sealer Installer

• | J 42098 Crank Hub TORX® Socket

### Removal Procedure

1. Remove the transmission. Refer to Transmission Replacement in Automatic Transmission.
2. Counterhold the crankshaft with J 42098 and remove the flywheel bolts. Discard the flywheel bolts.
3. Remove the flywheel from the crankshaft.
4. Center punch the steel ring of the rear main oil seal.
5. Carefully drill a small, shallow, pilot hole into the steel ring of the rear main oil seal.
6. Screw in a self-tapping screw.
7. Use pliers to pull the rear main oil seal out.
8. Clean all sealing surfaces.

### Installation Procedure

1. Coat the lip of the rear main oil seal with a small amount of chassis grease, GM P/N 12377985 or equivalent.
2. Use the J 42067 to install the rear main oil seal.
3. Clean the rear crankshaft flange.
4. Install the flywheel to the crankshaft.
5. Coat the new flywheel bolts with thread retaining compound, GM P/N 12345493 or equivalent.

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.

6. Counterhold the crankshaft with J 42098 and install the new flywheel bolts.

Tighten
Tighten the flywheel bolts to 65 N·m (48 lb ft).

7. Use the J 36660-A to rotate the flywheel bolts in the following sequence:

Tighten

1. The first pass rotate the flywheel bolts 30 degrees.
2. The second and the final pass rotate the flywheel bolts an additional 15 degrees.

8. Install the transmission. Refer to Transmission Replacement in Automatic Transmission.