Silverado 1500 2WD V6-4.3L (2007)
7. Inspect the 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 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.
1. Apply lubricant to the lifter rollers. Refer to Sealers, Adhesives, and Lubricants for the correct part number.
Important: If reusing the lifters, install the lifters to their original positions.
2. Install the lifters.
Notice: Refer to Fastener Notice.
3. Install the lifter pushrod guides.
Tighten the bolts to 16 N.m (12 lb ft).
4. Install the pushrods.
5. Install the intake manifold.
