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Installation Procedure

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

Important:  For manual transmission applications, note the position and direction of the engine flywheel before removal. The flywheel does not use a locating pin for alignment. Mark or scribe the end of the crankshaft and the flywheel before component removal. The engine flywheel must be reinstalled to the original position and direction. The engine flywheel will not initially seat against the crankshaft flange, but will be pulled onto the crankshaft by the engine flywheel bolts. This procedure requires a 3 stage tightening process.

DO NOT remove the prop shaft hub or flex plate from the automatic transmission engine flywheel. The flywheel, prop shaft hub, and flex plate are balanced as an assembly. If service is required, the entire flywheel assembly should be replaced.

  1. If equipped with a manual transmission, align the mark or scribe on the crankshaft with the mark or scribe on the existing flywheel.

    Refer to ENGINE BALANCING .

    Fig 1: Installing Engine Flywheel (Manual Transmission)
    G01970639Courtesy of GENERAL MOTORS CORP.
  2. Install the engine flywheel.
    Fig 2: Installing Engine Flywheel (Automatic Transmission)
    G01970640Courtesy of GENERAL MOTORS CORP.
  3. Apply threadlock GM U.S. P/N 12345382, Canada P/N 10953489, or equivalent to the threads of the flywheel bolts.
    NOTE: Refer to FASTENER NOTICE .
  4. Install the engine flywheel bolts until snug.

    Tighten 

    1. 4.1. Tighten the engine flywheel bolts a first pass in sequence to 20 N.m (15 lb ft).
    2. 4.2. Tighten the engine flywheel bolts a second pass in sequence to 50 N.m (37 lb ft).
    3. 4.3. Tighten the engine flywheel bolts a final pass in sequence to 100 N.m (74 lb ft).
      4. Fig 3: Identifying Engine Flywheel Bolt Tightening Sequence
      G01970641Courtesy of GENERAL MOTORS CORP.
  5. Install the driveline support, if equipped with a automatic transmission. Refer to DRIVELINE SUPPORT ASSEMBLY REPLACEMENT (AUTOMATIC TRANSMISSION) or DRIVELINE SUPPORT ASSEMBLY REPLACEMENT (MANUAL TRANSMISSION) in Propeller Shaft.
  6. Install the clutch assembly, if equipped with a manual transmission. Refer to CLUTCH ASSEMBLY REPLACEMENT in Clutch.
  7. Install the catalytic converter. Refer to CATALYTIC CONVERTER REPLACEMENT in Engine Exhaust.
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