Grand Prix V6-191 3.1L VIN M SFI (1998)
5. Remove the ball check valves (372 and 373) from the valve body.
6. Remove the spacer plate (370) and gasket (369).
7. Remove the ball check valves (372) from the case cover.
Pontiac Workshop Service and Repair Manuals
Ball Check Valve Locations|Page 7113 >
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