GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Engine 🢒 Engine Exhaust 🢒 Exhaust Muffler Replacement

Removal Procedure
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Suitably support the exhaust system.

    3. Object Number: 389538 Size: SH
  3. Remove the exhaust resonator bolts.
  4. Remove the exhaust resonator gasket.

    5. Object Number: 389589 Size: SH
  5. Remove the exhaust hanger insulators from the exhaust muffler with exhaust pipe and tail pipe.
  6. Remove the exhaust muffler with exhaust pipe and tail pipe.

Installation Procedure

    Object Number: 389589 Size: SH
  1. Install and suitably support the exhaust muffler with exhaust pipe and tail pipe.
  2. Install the exhaust hanger insulators to the exhaust muffler with exhaust pipe and tail pipe.

    3. Object Number: 389538 Size: SH
  3. Install the exhaust resonator gasket.
  4. install the exhaust resonator bolts.

    5. Tighten
    Tighten the exhaust resonator bolts to 45 N·m (33 lb ft).

  5. Remove the support from the exhaust system.
  6. Lower the vehicle.
  7. Inspect the exhaust system for leaks and underbody contact.