Engine Flywheel Installation 5.3L
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). |
Engine Flywheel Installation 6.0L
Note: The flywheel and flex plate do 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.
- Install the manual transmission flywheel to the crankshaft, if applicable.
- Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the bolts.
Caution: Refer to Fastener Caution in the Preface section.
- Install the engine flywheel bolts (1-6).
| 4.1. | Tighten the engine flywheel bolts (1-6) a first pass in sequence to
20 N·m (15 lb ft). |
| 4.2. | Tighten the engine flywheel bolts (1-6) a second pass in sequence to
50 N·m (37 lb ft). |
| 4.3. | Tighten the engine flywheel bolts (1-6) a final pass in sequence to
100 N·m (74 lb ft). |
