Flywheel: Service and Repair

Engine Flywheel Replacement

Removal Procedure
1. Remove the transmission. Service and Repair





Important: Note the position and direction of the engine flywheel before removal.

2. Remove the clutch. Service and Repair





Important: Note the position and direction of the engine flywheel before removal.

3. Remove the engine flywheel bolts.
4. Remove the transmission engine flywheel.
5. If required, clean and inspect the engine flywheel.





6. Install two M11 x 1.5 mm bolts (1) to the threaded holes of the spacer, if applicable.
7. Rotate the bolts clockwise to remove the spacer.





8. Remove the spacer from the rear of the crankshaft, if applicable.

Installation Procedure





Important: The flywheel does not use a locating pin for alignment and will not initially seat against the crankshaft flange or spacer (if applicable), but will be pulled onto the crankshaft by the engine flywheel bolts. This procedure requires a three stage tightening process.

Important: Certain applications (4.8 L manual transmissions or all 6.0 L) require a spacer and longer bolts for proper flywheel position.

1. Install the spacer (if applicable) onto the rear of the crankshaft.





2. Install the manual transmission engine flywheel to the crankshaft.





Important: Longer flywheel bolts must be used on applications using a flywheel spacer.

3. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent to the threads of the flywheel bolts.

Flywheel Bolts 4.8, 5.3, 6.0L:

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 engine flywheel bolts.
4.1. Tighten the bolts a first pass in sequence to 20 Nm (15 lb ft).
4.2. Tighten the bolts a second pass in sequence to 50 Nm (37 lb ft).
4.3. Tighten the bolts a final pass in sequence to 100 Nm (74 lb ft).

5. Install the clutch.
6. Install the transmission.