GM Service Manual Online
For 1990-2009 cars only

Exhaust Muffler Replacement LY7

Removal Procedure


    Object Number: 1920231  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Loosen the exhaust muffler clamps (1).

  3. Object Number: 1920625  Size: SH
  4. With the aid of an assistant, separate the rubber insulators from the exhaust pipe hangers.
  5. With the aid of an assistant, remove the muffler assembly (1) from exhaust flexible pipe and the vehicle.

Installation Procedure


    Object Number: 1920625  Size: SH
  1. With the aid of an assistant, install the muffler assembly (1) to the vehicle and the exhaust flexible pipe.
  2. With the aid of an assistant, install the exhaust pipe hangers to the rubber insulators.
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1920231  Size: SH
  4. Tighten the exhaust muffler clamps (1).
  5. Tighten
    Tighten the clamps to 5 N·m (44 lb in).

  6. Lower the vehicle.

Exhaust Muffler Replacement LNJ

Removal Procedure


    Object Number: 926819  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the catalytic converter pipe flange to muffler pipe flange nuts.

  3. Object Number: 1370521  Size: SH
  4. With the aid of an assistant, separate the rubber insulators (5, 6, and 7) from the exhaust pipe hangers (1, 2, and 3).

  5. Object Number: 1920476  Size: SH
  6. With the aid of an assistant, remove the muffler assembly (3) from catalytic converter (1) and the vehicle.

Installation Procedure


    Object Number: 1920476  Size: SH
  1. With the aid of an assistant, install the muffler assembly (3) to catalytic converter (1) and the vehicle.

  2. Object Number: 1370521  Size: SH
  3. With the aid of an assistant, install the rubber insulators (5, 6, and 7) to the exhaust pipe hangers (1, 2, and 3).

  4. Object Number: 926819  Size: SH
  5. Install a NEW catalytic converter to muffler gasket onto the studs.
  6. Notice: Refer to Fastener Notice in the Preface section.

  7. Install the catalytic converter pipe flange to muffler pipe flange nuts.
  8. Tighten
    Tighten the nuts to 37 N·m (27 lb ft).

  9. Lower the vehicle.