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ENGINES Dirt or chips in valve lifters Remove lifters and remove dirt/chips Excessive valve lifter leak-down Replace valve lifters, See ENGINES Valve lifter face worn Replace valve lifters, See ENGINES Broken or cocked valve springs Replace or reposition springs Too much valve stem-to-guide clearance Replace valve guides, See ENGINES Valve bent Replace valve, See ENGINES Loose rocker arms Retighten rocker arms, See ENGINES Excessive valve seat run-out Reface valve seats, See ENGINES Missing valve lock Install new valve lock Excessively worn camshaft lobes Replace camshaft, See ENGINES Plugged valve lifter oil holes Eliminate restriction or replace lifter Faulty valve lifter check ball Replace lifter check ball, See ENGINES Rocker arm nut installed upside down Remove and reinstall correctly Valve lifter incorrect for engine Remove and replace valve lifters Faulty push rod seat or lifter plunger Replace plunger or push rod Noisy Valves Improper valve lash Re-adjust valve lash, See ENGINES Worn or dirty valve lifters Clean and/or replace lifters Worn valve guides Replace valve guides, See ENGINES
2008 Chevrolet Silverado 1500 GENERAL INFORMATION Trouble Shooting - Basic Procedures
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