Removal Procedure
- Remove the automatic transmission, if applicable. Refer to
Transmission Replacement
in Automatic Transmission
- 4L60-E.
- Remove the manual transmission, if applicable. Refer to
Transmission Replacement
in Manual Transmission
- MM6.
Important: Note the position and direction of the engine flywheel before removal.
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 three stage tightening
process.
- Remove the engine flywheel bolts.
- Remove the automatic transmission flywheel, if applicable.
- Remove the manual transmission
flywheel, if applicable.
Installation Procedure
- Install the manual transmission
flywheel to the crankshaft, if applicable.
- Install the automatic
transmission flywheel to the crankshaft, if applicable.
- Apply threadlock GM U.S. P/N 12345382, Canada P/N 10953489,
or equivalent to the threads of the flywheel bolts.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the flywheel bolts.
Tighten
- Tighten the engine flywheel bolts a first pass in sequence to
20 N·m (15 lb ft).
- Tighten the engine flywheel bolts a second pass in sequence to
50 N·m (37 lb ft).
- Tighten the engine flywheel bolts a final pass in sequence to
100 N·m (74 lb ft).
- Install the manual transmission, if applicable. Refer to
Transmission Replacement
in Manual Transmission
- MM6.
- Install the automatic transmission, if applicable. Refer to
Transmission Replacement
in Automatic Transmission
- 4L60-E.