90. Engine Flywheel Installation

Engine Flywheel Installation





1. Important: The flex plate does not use a locating pin for alignment and will not initially seat against the crankshaft flange, but will be pulled onto the crankshaft by the bolts. This procedure requires a 3 stage tightening process.

Install the automatic transmission flex plate to the crankshaft, if applicable.





2. Install the manual transmission flywheel to the crankshaft, if applicable.
3. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the bolts.





4. Notice: Refer to Fastener Notice in Service Precautions.

Install the engine flywheel bolts.
1. Tighten the engine flywheel bolts (1-6) a first pass in sequence to 20 Nm (15 ft. lbs.).
2. Tighten the engine flywheel bolts (1-6) a second pass in sequence to 50 Nm (37 ft. lbs.).
3. Tighten the engine flywheel bolts (1-6) a final pass in sequence to 100 Nm (74 ft. lbs.).