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Home >> GMC >> 2003 >> Envoy 4WD >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Muffler Replacement >> Removal Procedure

Removal Procedure

  1. Raise and suitably support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  2. Remove the frame brace (required on extended versions).
  3. Remove the nuts that secure the muffler to the catalytic converter pipe.
    IMPORTANT: If there is damage to any part of the exhaust muffler assembly replace as an assembly.
  4. Inspect the exhaust muffler and the front pipe of the exhaust muffler for any damage if it is to be reused.
    Fig 1: Removing Muffler To Catalytic Converter Pipe Nuts
    G02131319Courtesy of GENERAL MOTORS CORP.
  5. Separate the muffler from the hanger insulators.
  6. Remove the muffler.
    Fig 2: Removing Muffler
    G02131320Courtesy of GENERAL MOTORS CORP.
  7. If there is any damage aft of the exhaust muffler:
    1. 7.1. Suitably support the exhaust system.
    2. 7.2. Cut the exhaust pipe (1), where the damage is located.
    3. 7.3. Remove the damaged exhaust pipe and resonator.
      Fig 3: Removing Damaged Exhaust Pipe & Resonator
      G02131321Courtesy of GENERAL MOTORS CORP.
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