GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the left (front) valve rocker arm(s). Refer to Valve Rocker Arm Replacement - Left Side .

  2. Object Number: 241679  Size: SH
  3. Remove the stationary hydraulic lash adjuster (SHLA) from the cylinder head bore.
  4. Clean and inspect the components. Refer to Camshaft Cleaning and Inspection and Valve Lifters Cleaning and Inspection .
  5. Store the lifter(s) in a clean, secure location.

Installation Procedure


    Object Number: 240801  Size: SH
  1. Fill the stationary hydraulic lash adjuster (SHLA) with clean engine oil and lubricate the all outer surfaces. Take precautions to prevent scratching the head area (1) of the adjuster.
  2. Lubricate the lash adjuster bore in the cylinder head with clean engine oil.

  3. Object Number: 241679  Size: SH
  4. Install the lash adjuster in the cylinder head.
  5. Install the left (front) valve rocker arm(s). Refer to Valve Rocker Arm Replacement - Left Side .