Envoy 2WD V6-4.3L VIN W (1998)
7. Remove the oil filter adapter and the oil filter adapter gasket.
8. Discard the oil filter adapter gasket.
9. Remove the oil filter adapter seal (O-ring).
10. Discard the oil filter adapter seal (O-ring).
11. Clean all sealing surfaces.
12
Remove the oil filter bypass valve.
13. Clean and inspect valve bore for damage.
INSTALLATION PROCEDURE
CAUTION: WEAR SAFETY GLASSES IN ORDER TO AVOID EYE DAMAGE.
