GM Service Manual Online
For 1990-2009 cars only

Valve Lifter Installation - Left Side LLT


    Object Number: 240801  Size: SH

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

    Important: Do not allow the stationary hydraulic lash adjuster to tip over, plunger down, after the oil fill.

  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. Lubricate the SHLA bores in the cylinder head with clean engine oil GM P/N 12378006 or equivalent.

  3. Object Number: 1977903  Size: SH
  4. Install the SHLAs in the cylinder head.
  5. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the SHLA pivot spheres.