GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1674286  Size: SH

    Note: DO NOT remove the screws from the upper air cleaner cover.

  1. Loosen the air cleaner cover screws (1).

  2. Object Number: 1694143  Size: SH
  3. Open the air cleaner cover.
  4. Remove the air filter from the air cleaner.
  5. Note: For the LZ9 engine, the air cleaner cover has a hydro carbon adsorber that is not serviceable. If the adsorber shows any kind of physical damage the cover must be replaced.

  6. Inspect the air cleaner housing assembly for damage. If a problem is found, replace as necessary.

Installation Procedure


    Object Number: 1694143  Size: SH
  1. Install the air filter to the air cleaner.
  2. Close the air cleaner cover. Ensure that the inboard hinges are engaged prior to tightening the screws.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1674286  Size: SH
  4. Tighten the air cleaner cover screws (1) to 3 N·m(27 lb in).