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Home >> Buick >> 2021 >> Enclave Essence, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Power Transfer Unit AAM >> Repair Instructions - On Vehicle >> Power Transfer Unit Case Fluid Replacement >> Installation Procedure
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Installation Procedure

  1. GM4288856Courtesy of GENERAL MOTORS COMPANY

    Install drain plug (2) and seal and tighten to 39 N.m (29 lb-ft).

  2. Fill the transfer case to the bottom of the fill plug hole with the recommended fluid. Refer to:

    Adhesives, Fluids, Lubricants, and Sealers , or

    Approximate Fluid Capacities .

  3. Install fill plug (1) and seal and tighten to 39 N.m (29 lb-ft).
  4. Inspect the cross member to ensure that no oil has drained into the cross member cavity. Clean the cross member if necessary.