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Home >> Buick >> 2019 >> Regal TourX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 155 (Automatic Transmission - 9T50 (M3D) And 9T60 (M3T) - Description And Operation) >> Description and Operation >> Drive Range, Seventh Gear (Hydraulic Circuits) >> 1-2-3-4-5-6 Clutch Releases

1-2-3-4-5-6 Clutch Releases

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

1-2-3-4-5-6 Solenoid 

The 1-2-3-4-5-6 solenoid energizes applying pressure against the 1-2-3-4-5-6 regulator valve spring force. This blocks DRIVE fluid from entering the 123456 CLUTCH REGULATOR fluid circuit. 123456 CLUTCH REGULATOR fluid is exhausted thru orifice #15 and #11 into the EX BACKFILL fluid circuit and thru orifice #8 into the EXHAUST fluid circuit.

1-2-3-4-5-6 Clutch Assembly 

The 1-2-3-4-5-6 clutch is released allowing 123456 CLUTCH fluid to exhaust thru orifice #39 and #17 to the 1-2-3-4-5-6 clutch boost valve into the 123456 CLUTCH REGULATOR fluid circuit. 123456 CLUTCH REGULATOR fluid continues thru orifice #11 into the EXHAUST fluid circuit.