Sierra 1500 2WD V6-4.3L (2008)
Lifter / Lash Adjuster: Service and Repair
Valve Lifter Replacement
Tools Required
J 3049-A Valve Lifter Remover
Removal Procedure
1. Remove the intake manifold. Refer to Lower Intake Manifold Replacement (See: Intake Manifold/Service and Repair) .
2. Remove the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement (See: Rocker Arm Assembly/Service and Repair) .
Important: Place the components in a rack so that the components can be installed to their original location.
3. Remove the bolts and lifter pushrod guide.
Important: Place the valve lifters in the rack in the upright position in order to maintain the oil inside the valve lifters.
4. Remove the lifters.
Important: Some valve lifters may be stuck in the valve lifter bores because of gum or varnish deposits and may require the use of J
3049-A for removal.
5. Use the J 3049-A in order to remove the stuck valve lifters.
6. Use a cleaning solvent and a shop towel to clean any varnish from the valve lifter bores.
7. Inspect the lifter bores for excessive wear or scoring. Replace the engine block if there is excessive wear or deep scoring.
