Tools Required

J 39946  Crankshaft Socket - 4.0L and 4.6L

1. Ensure the crankshaft is in the TDC position for the number one cylinder using the J 39946  . See Special Tools .
Fig 1: View Of Valve Lifter
Courtesy of GENERAL MOTORS CORP.
NOTE: Refer to Valve Lifter Priming Notice in Cautions and Notices.
2. 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.
3. Lubricate the SHLA bores of the cylinder head with clean engine oil GM P/N 12378006 or equivalent.
Fig 2: View Of Left Valve Lifter
Courtesy of GENERAL MOTORS CORP.
4. Install the SHLAs.
5. Apply a liberal amount of lubricant GM P/N 12345001 or equivalent to the SHLA sphere.