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Engine Flywheel Installation

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Engine Flywheel & Bolt
    GM178458Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: 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 bolts. This procedure requires a 3 stage tightening process.
  1. Install the automatic transmission flex plate to the crankshaft.
  2. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the bolts.
    3. Fig 2: Identifying Flywheel Bolt Tightening Sequence
    GM63174Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the engine flex plate bolts.

    Tighten: 

    1. Tighten the flex plate bolts (1-6) a first pass in sequence to 20 N.m (15 lb ft).
    2. Tighten the flex plate bolts (1-6) a second pass in sequence to 50 N.m (37 lb ft).
    3. Tighten the flex plate bolts (1-6) a final pass in sequence to 100 N.m (74 lb ft).

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