Excessive Shock Or Flare During 2-3 Or 3-2 Shift

Possible cause: foreign material in separator plate orifice or stuck 2nd check ball. Defective shift control solenoid valve "C", clutch pressure control solenoids, 3rd clutch pressure switch or circuit, CPC valve "B", shift valve "C", 2nd or 3rd accumulator, or 2nd or 3rd clutch.