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Home >> Buick >> 2020 >> Regal Base >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 9T50 (M3D) And 9T60 (M3T) - Description And Operation >> Description and Operation >> Reverse (Hydraulic Circuits) >> Notes

Reverse (Hydraulic Circuits): Notes

When the gear selector is moved to the Reverse (R) position (from the Park position) the 5-7 reverse solenoid and clutch select control solenoid is commanded ON and the 1 reverse & 6-7-8-9 solenoid is commanded OFF and the following changes occur in the transmission's hydraulic and electrical systems: