Avalanche 2500 4WD V8-8.1L VIN G (2003)
6. Some valve lifter may be stuck in their bore due to gum or varnish deposits, These lifters can be removed using J3049-A.
7. Clean and inspect the valve lifters.
Installation Procedure
Important: If a new camshaft is installed, replace all the valve lifters.
1. Coat the valve lifter rollers with lubricant GM P/N 12345501 (Canadian 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.
