For 1990-2009 cars

## Valve Lifter Installation - Left Side LLT

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. Install the SHLAs in the cylinder head.
4. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the SHLA pivot spheres.

## Valve Lifter Installation - Left Side LY7

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. 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.
3. Install the SHLAs (1).
4. Apply a liberal amount of commercially available camshaft/lifter prelube to the SHLA (1) pivot spheres.