GM Service Manual Online
For 1990-2009 cars only

Exhaust Muffler Replacement Sedan LS,LT, Maxx LT

Removal Procedure


    Object Number: 1523750  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. If equipped with a 2.2L (L61) engine, remove the intermediate pipe to muffler nuts.

  3. Object Number: 1459614  Size: SH
  4. If equipped with a 3.5L (LX9) engine, remove the rear catalytic converter to muffler nuts.

  5. Object Number: 1238995  Size: SH
  6. With the aid of an assistant , remove the muffler from the hangers.

Installation Procedure


    Object Number: 1238995  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, install the muffler to the hangers.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1459614  Size: SH
  3. If equipped with a 3.5L (LX9) engine, remove the rear catalytic converter to muffler nuts.
  4. Tighten
    Tighten the nuts to 30 N·m (22 lb ft).


    Object Number: 1523750  Size: SH
  5. If equipped with a 2.2L (L61) engine, install the intermediate pipe to muffler nuts.
  6. Tighten
    Tighten the nuts to 30 N·m (22 lb ft).

  7. Lower the vehicle.