Savana 3/4 Ton Van V6-4.3L VIN X (2003)
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 valve lifter bores for excessive wear or scoring. Replace the engine block if there is excessive wear or deep scoring.
8. Inspect the camshaft for wear or damage. If the wear is questionable remove the camshaft and inspect.
9. Clean and inspect the valve lifters and the valve pushrod guide.
Installation Procedure
Important: It is normal for NEW lifters to make a slight ticking noise when the engine is first started. Increasing the engine RPMs slightly to raise oil
pressure should stop the noise.
1. Apply lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the valve lifter rollers.
Important: If reusing the valve lifters install the valve lifters in the original positions.
2. Install the valve lifters.
