Special Tools

WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

J 39946: Crankshaft Socket - 4.0L and 4.6L

For equivalent regional tools, refer to Special Tools .

Ensure the crankshaft is in the TDC position for the number one cylinder using the J 39946: socket.

Fig 1: Pivot Sphere Area Of SHLA

Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Valve Lifter Priming Caution .

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

Fig 2: Left Valve Lifter

Courtesy of GENERAL MOTORS CORP.

Install the SHLAs.
Apply a liberal amount of lubricant GM P/N 12345001 or equivalent to the SHLA sphere.