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Front Differential Carrier End Play Check

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  1. Ensure thrust washer and bearing are on front differential carrier. Install case extension seal onto case extension, if removed. Install case extension onto transaxle. See Figure. Install 2 case extension bolts. DO NOT tighten bolts to specification. Only tighten bolts until case extension is fully seated.
  2. Position transaxle with case extension facing up. Install Aligning Tool (J-26958) and dial indicator. See Fig 1. Zero dial indicator. Use Snap Ring Remover (J-28585) or large screwdriver to lift front differential carrier. Pry up on VSS reluctor wheel through sensor hole in case extension.
  3. Note dial indicator measurement. End play should be .005-.025" (.13-.64 mm). Record measurement for reassembly reference. If dial indicator reading is less than .005" (.13 mm), install next smaller size thrust washer, and check end play. If dial indicator reading is more than .025" (.64 mm), install next larger size thrust washer, and check end play. For available thrust washer sizes, see CARRIER-TO-CASE SELECTIVE THRUST WASHER SIZES  table under TRANSAXLE REASSEMBLY.
Fig 1: Measuring Front Differential Carrier End Play
G98I01975Courtesy of GENERAL MOTORS CORP.
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