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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1669 (Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L - Repair Instructions - Off Vehicle (3 Of 3)) >> Engine Flywheel Installation

Engine Flywheel Installation

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Engine Flywheel & Bolts (Manual Transmission)
    GM156166Courtesy of GENERAL MOTORS CORP.
    NOTE:
    • For manual transmission applications, note the position and direction of the engine flywheel before removal. Mark or scribe the end of the crankshaft and flywheel before component removal. The existing manual transmission engine flywheel must be installed to the original position and direction.
    • 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 3 stage tightening process.
  1. Install the manual transmission flywheel to the crankshaft, in the original position and direction.
  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.
    CAUTION: Refer to Fastener Caution .
  3. Install the bolts.
    1. Tighten the bolts (1-6) a first pass in sequence to 20 N.m (15 lb ft) .
    2. Tighten the bolts (1-6) a second pass in sequence to 50 N.m (37 lb ft) .
    3. Tighten the bolts (1-6) a final pass in sequence to 100 N.m (74 lb ft) .
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