GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Epica 🢒 Engine 🢒 Engine Exhaust 🢒 3rd Muffler Replacement

Removal Procedure

    Caution: Refer to Exhaust Service Caution in the Preface section.


    Object Number: 1252141 Size: SH
  1. Remove the nuts that secure the front exhaust pipe flange to the 3rd muffler flange.

    2. Object Number: 1256179 Size: SH
  2. Remove the nuts that secure the front muffler pipe to the 3rd muffler flange.
  3. Remove the 3rd muffler and the gasket.
  4. Clean the sealing surfaces on the front exhaust pipe flange and the exhaust manifold.
  5. Inspect the front exhaust pipe and the 3rd muffler for holes, damage, open seams, or other deterioration which could permit exhaust fumes to seep into the passenger compartment or the trunk.

Installation Procedure

    Object Number: 1256179 Size: SH
  1. Install the gasket between the 3rd muffler flange and the front muffler pipe flange.
  2. Install the 3rd muffler to the front muffler pipe.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the nuts to secure the front muffler pipe to the 3rd muffler.

    4. Tighten
    Tighten the front muffler pipe-to-3rd muffler nuts to 30 N·m (22 lb ft).


    Object Number: 1252141 Size: SH
  4. Install the gasket between the front exhaust pipe flange and the 3rd muffler flange.
  5. Install the front exhaust pipe to the 3rd muffler using the nuts.

    6. Tighten
    Tighten the front exhaust pipe-to-3rd muffler nuts to 30 N·m (22 lb ft).