- Install the automatic transmission flex plate to the crankshaft, if applicable.
- Install the manual transmission flywheel to the crankshaft, if applicable. Refer to Engine Balancing .
- Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the bolts.
- Install the bolts.
- Tighten the bolts (1-6) a first pass in sequence to 20 N·m (15 lb ft).
- Tighten the bolts (1-6) a second pass in sequence to 50 N·m (37 lb ft).
- Tighten the bolts (1-6) a final pass in sequence to 100 N·m (74 lb ft).
Important:
• For manual transmission applications, note the position and direction of the engine flywheel before removal. Mark or scribe the end of the crankshaft and flywheel before component removal. The existing manual transmission engine flywheel must be
installed to the original position and direction. • The flywheel 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 engine flywheel bolts. This procedure requires a 3 stage tightening process. • Do not remove the propeller shaft hub or flex plate from the automatic transmission flex plate assembly. The flex plate and propeller shaft hub are balanced as an assembly. If service is required, the entire flex plate assembly should be replaced.
Notice: Refer to Fastener Notice in the Preface section.
Tighten
