5-7 Reverse 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.
5-7 Reverse Solenoid
The 5-7 reverse solenoid de-energizes releasing pressure against the 5-7 reverse regulator valve spring force. This blocks 57R CLUTCH FEED fluid from entering the 57R CLUTCH REGULATOR fluid circuit. 57R CLUTCH REGULATOR fluid is exhausted thru orifice #25 and #24 into the EX BACKFILL fluid circuit and thru orifice #21 into the EXHAUST fluid circuit.
5-7 Reverse Clutch Assembly
The 5-7 reverse clutch is released allowing 57R CLUTCH fluid to exhaust thru orifice #45 and #44 to the 5-7 clutch boost valve into the 57R CLUTCH REGULATOR fluid circuit. 57R CLUTCH REGULATOR fluid continues thru orifice #22 into the EXHAUST fluid circuit.