Valve Lifter Installation
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.
3. Install the valve lifter guides.
4. Install the valve lifter guide retainer.
NOTICE: Refer to Fastener Notice in Service Precautions.
5. Install the valve lifter guide retainer bolts.
Tighten the valve lifter guide retainer bolts to 25 Nm (18 ft. lbs.).