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Home >> Chevrolet >> 2021 >> Blazer L >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3D), 9T60 (M3T) Or 9T65 (M3V) - Description And Operation >> Description and Operation >> Drive Range, Fifth Gear (Hydraulic Circuits) >> 4th Clutch Releases

4th Clutch Releases

S4 Solenoid 

The S4 solenoid is energized off allowing S4 VFS SIG fluid to exhaust thru orifice #2. Spring pressure shifts the 4th clutch regulator valve to allow 4TH CLUTCH fluid to exhaust into EX BACKFILL from the 4th clutch assembly.

4th Clutch Assembly 

The 4th clutch is released allowing 4TH CLUTCH fluid to exhaust thru the 4th clutch regulator valve.

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