Flex Plate: Service and Repair

Engine Flywheel Replacement

Removal Procedure




1. Remove the automatic transmission. Refer to Transmission Replacement (RPO LS4) (Removal and Replacement)Transmission Replacement (RPOs LZE/LZ9) (Removal and Replacement).
2. Remove the flywheel bolts and flywheel.
3. Clean and inspect the engine flywheel. Refer to Engine Flywheel Cleaning and Inspection (Overhaul).

Installation Procedure

Note: 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 3-stage tightening process.




1. Install the flywheel to the crankshaft.
2. Apply threadlock to the threads of the flywheel bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers (Specifications).





Caution: Refer to Fastener Caution (Fastener Caution).

3. Install the engine flywheel bolts.

* Tighten the bolts a first pass in sequence to 20 Nm (15 lb ft).
* Tighten the bolts a second pass in sequence to 50 Nm (37 lb ft).
* Tighten the bolts a final pass in sequence to 100 Nm (74 lb ft).

4. Install the automatic transmission. Refer to Transmission Replacement (RPO LS4) (Removal and Replacement)Transmission Replacement (RPOs LZE/LZ9) (Removal and Replacement).