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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 387 (Engine Mechanical - 5.3L, 6.0L & 6.2L - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Automatic Transmission Flex Plate Installation

Automatic Transmission Flex Plate Installation

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    Fig 1: Automatic Transmission Flex Plate
    GM1658140Courtesy of GENERAL MOTORS CORP.
    NOTE:

    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 engine flex plate bolts. This procedure requires a 3 stage tightening process.

  1. Install the flex plate to the crankshaft.
  2. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the flex plate bolts.
    3. Fig 2: Flywheel Bolt Tightening Sequence
    GM63174Courtesy of GENERAL MOTORS CORP.
    CAUTION:

    Refer to Fastener Caution .

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