S15/T15 Sonoma P/U 2WD L4-2.2L VIN 5 Flex Fuel (2001)
6. Inspect the valve lifter bore in the engine block for wear and scuffing.
7. Inspect the roller for freedom of movement.
8. Inspect the roller surface for flat spots and pitting.
9. Inspect the valve lifters; and the valve lifter guide assemblies.
10. If a valve lifter requires replacement inspect the camshaft.
Installation Procedure
Notice: If the valve lifters and anti-rotation brackets are not installed properly, the valve lifters, the anti-rotation brackets, and the engine could be
damaged.
Important: When installing new valve lifters, coat the lifters with engine assembly prelube (GM P/N 1052367) or equivalent.
1. Install the valve lifters in the lifter bores.
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Align the flat sides (top) of the lifters with the flat sides of the lifter guides.
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When properly aligned, the flat side of each lifter is aligned parallel to the lifter guide.
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The roller at the bottom of each lifter is aligned parallel to the camshaft lobe.
2. Install the lifter guides on the valve lifters.