LaCrosse V6-3.8L VIN 2 (2005)
6. Remove the four bolts holding the oil filter adapter to the engine front cover.
7. Remove the following components:
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Oil filter adapter
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Gasket
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Oil pressure valve and spring
8. Clean the parts in a suitable solvent. Dry the parts.
9. Clean the oil filter adapter gasket mating surfaces.
10. Inspect the following areas:
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The oil pressure valve and the valve bore for burrs
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The spring for loss of tension. Replace the spring if necessary.
