Chevrolet Silverado / GMC Sierra. Manual - part 55
J 3049-A Valve Lifter Remover. See Special Tools.
Removal Procedure
Fig. 157: View Of Valve Lifter Pushrod Guides
Courtesy of GENERAL MOTORS CORP.
1. Remove the intake manifold. Refer to Lower Intake Manifold Replacement.
2. Remove the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement.
3. Remove the bolts and lifter pushrod guide.
IMPORTANT: Place the components in a rack so that the components can
be installed to their original location.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 158: View Of Valve Lifters
Courtesy of GENERAL MOTORS CORP.
4. Remove the lifters.
IMPORTANT: Place the valve lifters in the rack in the upright position in
order to maintain the oil inside the valve lifters.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 159: Using J 3049-A To Remove Sticking Valve Lifters
Courtesy of GENERAL MOTORS CORP.
5. Use the J 3049-A in order to remove the stuck valve lifters. See Special Tools.
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
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. See Special Tools.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
excessive wear or deep scoring.
8. Inspect the camshaft for wear or damage. If the wear is questionable remove the camshaft
and inspect. Refer to Camshaft and Bearings Cleaning and Inspection.
9. Clean and inspect the lifters, if necessary. Refer to Valve Lifters and Guides Cleaning
and Inspection.
Installation Procedure
IMPORTANT: It is normal for NEW lifters to make a slight ticking noise when
the engine is first started. Increasing the engine RPM slightly to
raise oil pressure should stop the noise.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado