Installation Procedure

Important:  It is normal for NEW lifters to make a slight ticking noise when the engine is first started. Increasing the engine RPMs slightly to raise oil pressure should stop the noise.

1. Apply lubricant GM P/N 12345501 or equivalent to the valve lifter rollers.

   Important:  If reusing the valve lifters, install the valve lifters in the original positions.

2. Install the valve lifters.
   Fig 1: Valve Lifters

   Courtesy of GENERAL MOTORS CORP.
   NOTE: Refer to FASTENER NOTICE .
3. Install the valve lifter pushrod guides.

   Tighten 

   Tighten the valve lifter pushrod guide bolts to 16 N.m (12 lb ft).

4. Install the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
5. Install the lower intake manifold. Refer to Intake Manifold Replacement - Lower .
   Fig 2: Valve Lifter Pushrod Guide & Engine Block

   Courtesy of GENERAL MOTORS CORP.