Power Transfer Unit Cover Housing Cleaning and Inspection

2023 Chevrolet Traverse RS, 4WDSECTION Power Transfer Unit Cover Housing Cleaning and Inspection
Fig 1: Identifying Power Transfer Unit Cover Housing Cleaning And Inspection Areas
GM4218762Courtesy of GENERAL MOTORS COMPANY
Power Transfer Unit Cover Housing Cleaning and Inspection

Callout Component Name

Preliminary Procedure

  • Clean the power transfer unit case housing in solvent, air dry. Remove all residual input shaft seal material from the input shaft seal bore.
1 Power Transfer Unit Case Cover Housing Threaded Bolt Holes
NOTE:

Inspect for damage.

2 Power Transfer Unit Case Extension Housing Threaded Bolt Holes
NOTE:

Inspect for thread damage

3 Power Transfer Unit Case Extension Housing Sealing Surface
NOTE:

Inspect for scoring or damage.

4 Power Transfer Unit Case Cover Housing Sealing Surface
NOTE:

Inspect for scoring or damage.

5 Power Transfer Unit Case Cover Housing Sealing Surface
NOTE:

Inspect for pitting, excessive wear, or damage.

6 Power Transfer Unit Case Cover Housing Bearing Race
NOTE:

Inspect for brinnelling or excessive wear.

7 Power Transfer Unit Fill Plug Hole
NOTE:

Inspect for thread damage or sealing surface.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.