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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Mechanical - 4.3L (LV1)) >> Repair Instructions - On Vehicle >> Automatic Transmission Flex Plate Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM4861721Courtesy of GENERAL MOTORS COMPANY
    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.

    Automatic Transmission Flex Plate (2) - Install

  2. Fig 1: Automatic Transmission Flex Plate And Bolts With Tightening Sequence
    GM4861734Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Install the NEW engine flex plate bolts.

    1. Tighten the engine flex plate bolts (1 - 8) a first pass in sequence to 15N.m (11 lb ft).
    2. Tighten the engine flex plate bolts (1 - 8) a second pass in sequence to 30N.m (22 lb ft).
    3. Tighten the engine flex plate bolts (1 - 8) a final pass in sequence an additional 30 degrees using EN-45059  angle meter.
  3. EN-42386-A  flywheel holding tool - Remove
  4. Transmission - Install - Transmission Replacement
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