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Home >> GMC >> 2021 >> Acadia AT4 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W) - Description And Operation >> Description and Operation >> Drive Range, Fourth Gear (Hydraulic Circuits Without ETRS) >> 3-8 Clutch Releases

3-8 Clutch Releases

S3-8 Solenoid 

The S3-8 solenoid is energized off allowing S38 VFS SIG fluid to exhaust thru orifice #1. Spring pressure shifts the 3-8 clutch regulator valve to allow 38 CLUTCH fluid to exhaust into EX BACKFILL from the 3-8 clutch assembly.

3-8 Clutch Assembly 

The 3-8 clutch is released allowing 38 CLUTCH fluid to exhaust thru the 3-8 clutch regulator valve.