GM Service Manual Online
For 1990-2009 cars only

Exhaust Particulate Filter Replacement With LF8

Removal Procedure


    Object Number: 1990144  Size: SH
  1. Remove the intermediate pipe nuts (2) and separate the intermediate pipe from the front pipe (1).
  2. Discard the intermediate pipe gasket (3). Do not reuse it.

  3. Object Number: 1990145  Size: SH
  4. Remove the exhaust particulate filter bracket nuts (1,3).
  5. Remove the exhaust particulate filter (5) from the vehicle.
  6. Transfer any parts as needed.

Installation Procedure


    Object Number: 1990145  Size: SH
  1. Position the exhaust particulate filter brackets (2,4) to the vehicle frame.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the exhaust particulate filter bracket nuts (1,3).
  4. Tighten
    Tighten the nuts to 47 N·m (35 lb ft).


    Object Number: 1990144  Size: SH
  5. Install a new intermediate pipe gasket (3) and align the front pipe (1) to the intermediate pipe.
  6. Install the intermediate pipe nuts (2).
  7. Tighten
    Tighten the nuts to 65 N·m (48 lb ft).