GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 LeSabre 🢒 Engine 🢒 Engine Exhaust 🢒 Exhaust Muffler Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in Cautions and Notices.

    2. Object Number: 166688 Size: SH
  2. Support the intermediate pipe/resonator assembly.
  3. Cut the intermediate pipe/resonator.

    4. Object Number: 108127 Size: SH
  4. Remove the muffler hangers.
  5. Remove the muffler.

Installation Procedure

    Object Number: 108127 Size: SH
  1. Install the muffler.
  2. Install the muffler hangers.
  3. Install the intermediate pipe/resonator assebly to the muffler.
  4. Align the muffler and the intermediate pipe/resonator to the proper clearance. Refer to Exhaust System Alignment.

    5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the U-bolt type clamp.

    6. Tighten
    Tighten the clamp nuts to 40 N·m (30 lb ft).