Silverado 2500 4WD V8-8.1L VIN G (2006)
Installation Procedure
Important: If a new camshaft is installed, replace all the valve lifters.
1. Coat the valve lifter rollers with lubricant GM U.S. P/N 12345501, Canada P/N 992704, or equivalent.
Important: If reusing the valve lifters, install the lifters in their original location. The valve lifter guide retainer must contact all of the valve lifter
guides. If the lifter guide retainer is bent, the valve lifter guide retainer must be replaced.
2. Install the valve lifters.
3. Install the valve lifter guides over the flats on the valve lifters, making sure the rollers of the valve lifters are properly aligned with the camshaft
lobes.
4. Install the valve lifter guide retainer.
Notice: Refer to Fastener Notice in Service Precautions.
5. Install the valve lifter guide retainer bolts.
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Tighten the valve lifter guide retainer bolts to 25 Nm (18 ft. lbs.).
6. Install the valve rocker arms and pushrods.
