GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2000 🢒 Seville 🢒 Engine 🢒 Engine Mechanical - 4.6L 🢒 Valve Lifter Replacement

Removal Procedure
  1. Remove the appropriate camshaft. Refer to Camshaft Replacement .

    2. Object Number: 609690 Size: SH

    Important: If the followers are being reused, arrange them so that they may be put back in their original locations.

  2. Remove the camshaft followers.

    3. Object Number: 522867 Size: SH
  3. Remove the stationary hydraulic lash adjusters (SHLA) from the bores.
  4. Clean and inspect the valve train components. Refer to Valve Train Components Cleaning and Inspection .

Installation Procedure

    Object Number: 240801 Size: SH

    Important: Do not stroke/cycle the stationary hydraulic lash adjuster plunger without oil in the lower pressure chamber.

  1. Fill the stationary hydraulic lash adjuster (SHLA) with clean engine oil GM P/N 12378006 or equivalent. Take precautions to prevent scratching the pivot sphere area (1) of the SHLA.

    2. Object Number: 522867 Size: SH
  2. Install the new SHLA's into the bores.

    3. Object Number: 235196 Size: SH
  3. Apply a liberal amount of lubricant GM P/N 12345001 or equivalent to the roller (2) pivot pocket and valve slot areas (1) of the camshaft followers.

    4. Object Number: 522872 Size: SH

    Important: The follower must be positioned squarely on the valve tip so that the full width of the roller will completely contact the camshaft lobe. If the followers are being reused you must put them back in their original location.

  4. Place the camshaft followers in position on the valve tip and the SHLA (1). The rounded head of the follower goes on the SHLA, while the flat end goes on the valve tip.
  5. Install the camshafts. Refer to Camshaft Replacement .