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Home >> Chevrolet >> 2021 >> Trailblazer L >> Repair and Diagnosis >> Transmission >> Transfer Case >> Power Transfer Unit AAM >> Repair Instructions - On Vehicle >> Power Transfer Unit Case Replacement >> Installation Procedure

Installation Procedure

  1. GM5263019Courtesy of GENERAL MOTORS COMPANY

    Clean the contact surfaces between the power transfer unit case and the transmission.

  2. Power Transfer Unit Face Seal (1) - Install NEW
  3. GM5263015Courtesy of GENERAL MOTORS COMPANY

    Power Transfer Unit Case (3) @ Transmission - Install

  4. Power Transfer Unit Bolt (2) @ Transmission - Install and tighten [3x] 100 N.m (74 lb ft)
  5. Power Transfer Unit Bolt (1) @ Power Transfer Unit Adapter - Install and tighten 100 N.m (74 lb ft)
  6. GM5263011Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness Retainer (2) - Secure [2x]

  7. Electrical Connector (1) @ Power Transfer Unit Shift Actuator - Connect [2x]
  8. Transmission Brace @ Vehicle - Install - Transmission Brace Replacement
  9. Warm Up Three-Way Catalytic Converter @ Vehicle - Install - Warm Up Three-Way Catalytic Converter Replacement (L3T_FWD) , or Warm Up Three-Way Catalytic Converter Replacement (L3T_AWD) , or Warm Up Three-Way Catalytic Converter Replacement (LIH)
  10. GM5226784Courtesy of GENERAL MOTORS COMPANY

    Propeller Shaft (1) @ Vehicle - Install - Propeller Shaft Replacement

  11. GM5207578Courtesy of GENERAL MOTORS COMPANY

    Drivetrain and Front Suspension Cradle (1) @ Vehicle - Install - Drivetrain and Front Suspension Cradle Removal and Installation (AWD) , or Drivetrain and Front Suspension Cradle Removal and Installation (FWD)

  12. GM5238925Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Drive Shaft- Right Side (1) @ Vehicle - Install - Front Wheel Drive Half Shaft Replacement - Right Side (AWD) , or Front Wheel Drive Half Shaft Replacement - Right Side (FWD)

  13. Check the transmission fluid level. Transmission Fluid Drain and Fill