Engine Flywheel Installation

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: 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.

Install the automatic transmission engine flywheel to the crankshaft.
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the flywheel bolts.

Fig 1: Installing Automatic Transmission Engine Flywheel To Crankshaft
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the engine flywheel bolts.
Tighten
1. 3.1. Tighten the engine flywheel bolts first pass in sequence to 20 N.m (15 lb ft).
2. 3.2. Tighten the engine flywheel bolts second pass in sequence to N.m (37 lb ft).
3. 3.3. Tighten the engine flywheel bolts final pass in sequence to 100 N.m (74 lb ft).
  
  Fig 2: Installing Engine Flywheel Bolts In Sequence
  Courtesy of GENERAL MOTORS CORP.