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Home >> GMC >> 2021 >> Yukon AT4 >> Repair and Diagnosis >> Engine Mechanical >> Exhaust System >> Repair Instructions >> Exhaust Muffler Replacement >> Installation Procedure

Installation Procedure

  1. GM5482179Courtesy of GENERAL MOTORS COMPANY

    Exhaust Intermediate Gasket (2) - Install NEW

  2. Exhaust Muffler (1) - Install
  3. GM5482178Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (1) @ Exhaust Insulator (2) - Install [ 2x ]

  4. GM5001384Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (1) @ Exhaust Insulator (2) - Install

  5. GM5001054Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (2) @ Three-Way Catalytic Converter (3) - Install

    6. CAUTION:

    Refer to Fastener Caution .

  6. Exhaust Pipe Clamp (1) - Tighten - Fastener Specifications 
  7. GM5481379Courtesy of GENERAL MOTORS COMPANY

    Exhaust System Intermediate Nut (1) - Install and tighten [ 2x ] - Fastener Specifications 

  8. GM5523050Courtesy of GENERAL MOTORS COMPANY

    Position the stabilizer shaft to the frame and install the 2 stabilizer shaft clamps (2).

  9. Rear Stabilizer Shaft Insulator Clamp Bolt (1) - Install and tighten [ 4x ] - Fastener Specifications
  10. Lower the vehicle.
  11. Inspect the exhaust system for leaks.
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