GM Service Manual Online
For 1990-2009 cars only

Exhaust Muffler Replacement LAT,LZ4

Removal Procedure


    Object Number: 1523750  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. If equipped with a 2.4L engine, remove the intermediate pipe to muffler nuts.

  3. Object Number: 1459614  Size: SH
  4. If equipped with a 3.5L engine, remove the rear catalytic converter to muffler nuts.

  5. Object Number: 1586052  Size: SH
  6. With the aid of an assistant, remove the muffler insulators from the hangers.
  7. Remove the muffler assembly.

Installation Procedure


    Object Number: 1586052  Size: SH

    Important: Replace the muffler hangers any time the exhaust system is removed from the vehicle. Do not use any mineral oil based lubricants or sharp tools when installing new exhaust system hangers.

  1. With the aid of an assistant , position the muffler assembly.
  2. Install the muffler insulators to the hangers.
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1459614  Size: SH
  4. If equipped with a 3.5L engine, install the exhaust pipe to muffler nuts.
  5. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).


    Object Number: 1523750  Size: SH
  6. If equipped with a 2.4L engine, install the exhaust manifold pipe to muffler nuts.
  7. Tighten
    Tighten the nuts to 30 N·m (22 lb ft).

Exhaust Muffler Replacement LY7

Removal Procedure


    Object Number: 1586011  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the exhaust pipe to muffler nuts.

  3. Object Number: 1842883  Size: SH
  4. With the aid of an assistant, remove the muffler insulators from the hangers.
  5. Remove the muffler assembly.

Installation Procedure


    Object Number: 1842883  Size: SH

    Important: Replace the muffler hangers any time the exhaust system is removed from the vehicle. Do not use any mineral oil based lubricants or sharp tools when installing new exhaust system hangers.

  1. With the aid of an assistant , position the muffler assembly.
  2. Install the muffler insulators to the hangers.
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1586011  Size: SH
  4. Install the exhaust pipe to muffler nuts.
  5. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).

  6. Lower the vehicle.