GM Service Manual Online
For 1990-2009 cars only

Exhaust Muffler Replacement 2.4L

Removal Procedure


    Object Number: 1774827  Size: SH
  1. Remove the nuts and the gaskets from both resonator pipe flanges-to-front muffler pipe flanges.

  2. Object Number: 1774829  Size: SH
  3. Detach both resonator assemblies from the rubber hangers.
  4. Remove both resonators.
  5. Check the rear resonator and the pipe for holes, damage, open seams and other deterioration which could permit exhaust fumes to seep into the passenger compartment or the trunk.

Installation Procedure


    Object Number: 1774829  Size: SH
  1. Secure both rear resonator assemblies to the rubber hangers.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1774827  Size: SH
  3. Install the nuts and the gaskets to both rear resonator pipe flanges-to-front muffler pipe flanges.
  4. Tighten
    Tighten the front muffler-to-rear resonator nuts to 40 N·m (30 lb ft).

Exhaust Muffler Replacement 2.0L Diesel

Removal Procedure


    Object Number: 1774827  Size: SH

    Caution: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

    Notice: When inspecting or replacing exhaust system components, make sure there is adequate clearance from all points on the underbody to prevent overheating of the floor pan and possible damage to the passenger compartment insulation and trim materials.

  1. Remove the nuts and the gaskets from the both rear muffler pipe flange-to-front muffler pipe flange.

  2. Object Number: 1774829  Size: SH
  3. Detach the both rear muffler assembly from the rubber hangers.
  4. Remove the both rear muffler.
  5. Check the rear muffler and the pipe for holes, damage, open seams and other deterioration which could permit exhaust fumes to seep into the passenger compartment or the trunk.

Installation Procedure


    Object Number: 1774829  Size: SH
  1. Secure the both rear muffler assembly to the rubber hangers.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1774827  Size: SH
  3. Install the nuts and the gaskets to the both rear muffler pipe flange-to-front muffler pipe flange.
  4. Tighten
    Tighten the front muffler-to-rear muffler nuts to 40 N·m (30 lb ft).

Exhaust Muffler Replacement 3.2L

Removal Procedure


    Object Number: 1860130  Size: SH
  1. Remove the nuts and the gaskets from the rear muffler pipe flange-to-front muffler pipe flange.

  2. Object Number: 1860132  Size: SH
  3. Detach the rear muffler assembly from the rubber hangers.
  4. Remove the rear muffler.
  5. Check the rear muffler and the pipe 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: 1860132  Size: SH
  1. Secure the rear muffler assembly to the rubber hangers.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1860130  Size: SH
  3. Install the nuts and the gaskets to the rear muffler pipe flange-to-front muffler pipe flange.
  4. Tighten
    Tighten the front muffler-to-rear muffler nuts to 40 N·m (30 lb ft).