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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Power Transfer Unit AAM) >> Repair Instructions - On Vehicle >> Power Transfer Unit Case Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the transfer case bracket. Transfer Case Bracket Replacement (With LGX Engine) , or Transfer Case Bracket Replacement (With LCV Engine) 
  2. Remove the warm up three way catalytic converter. Warm Up Three-Way Catalytic Converter Replacement (Bank 1, LGX) , or Warm Up Three-Way Catalytic Converter Replacement (LCV) , or Warm Up Three-Way Catalytic Converter Replacement (LSY) , or Warm Up Three-Way Catalytic Converter Replacement (Bank 2, LGX)
  3. Disconnect the two piece propeller shaft from the transfer case. Two-Piece Propeller Shaft Replacement
  4. GM5041039Courtesy of GENERAL MOTORS COMPANY

    Remove the power transfer unit bolt (1).

  5. GM5041864Courtesy of GENERAL MOTORS COMPANY

    Disconnect the power transfer unit case vent hose (1) from the power transfer unit case (2).

  6. Remove the transmission rear mount bracket. Transmission Rear Mount Bracket Replacement (All Wheel Drive)
  7. GM5041059Courtesy of GENERAL MOTORS COMPANY

    Remove the power transfer unit bolt (1).

  8. Disconnect all necessary electrical connectors and wiring harness retainers.
  9. GM5628086Courtesy of GENERAL MOTORS COMPANY

    Remove the secondary oxygen sensor wiring harness clip bolt (1).

  10. Remove the secondary oxygen sensor wiring harness clip bracket (2).
  11. Support the power transfer unit case with a suitable jack, and secure with suitable straps.
  12. GM5041045Courtesy of GENERAL MOTORS COMPANY

    Remove the 3 power transfer unit bolts (1).

  13. Separate the power transfer unit case (2) from the transmission and remove the power transfer unit case.
  14. GM5060151Courtesy of GENERAL MOTORS COMPANY

    Remove the power transfer unit (1) from the vehicle.

  15. Disconnect wire harness from the power transfer unit once lowered.