Note: 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 engine flex plate bolts. This procedure requires a 3 stage
tightening process.
- Install the flex plate to the crankshaft.
 
- Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the flex plate bolts.
 
Caution: Refer to Fastener Caution in the Preface section.
- Install the engine flex plate bolts.
 
| 3.1.  | Tighten the engine flex plate bolts (1-6) a first pass in sequence to 
20 N·m (15 lb ft). | 
 
| 3.2.  | Tighten the engine flex plate bolts (1-6) a second pass in sequence to 
50 N·m (37 lb ft). | 
 
| 3.3.  | Tighten the engine flex plate bolts (1-6) a final pass in sequence to 
100 N·m (74 lb ft). |