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Home >> GMC >> 2024 >> Acadia AT4 >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 8T65 (MF8) - Description And Operation >> Description and Operation >> Drive Range, First Gear (Hydraulic Circuit) >> Fluid Pressure Is Directed To The 1-2-3-4-5-6 Clutch Assembly

Fluid Pressure Is Directed To The 1-2-3-4-5-6 Clutch Assembly

Clutch Selector Valve 

DRIVE fluid is directed thru the clutch selector valve and into the DRIVE 2 fluid circuit which is directed to the 3-8 clutch regulator valve, tcc regulator apply valve, latch valve, #9 ball check valve, and mode 2 ETRS valve.

Latch Valve 

DRIVE 2 fluid is directed thru the latch valve and into the 1 REV / 6789 LATCH fluid circuit which is directed to the #5 ball check valve.

#5 Ball Check Valve 

1 REV / 6789 LATCH fluid seats the #5 ball check valve against the 6789 CLUTCH fluid circuit allowing 1 REV / 6789 LATCH fluid to enter the LATCH fluid circuit. LATCH fluid is directed to the clutch selector valve applying pressure with the clutch selector valve spring force.

Mode 2 ETRS Valve 

DRIVE 2 fluid is directed thru orifice #65 and into the mode 2 ETRS valve applying pressure with the mode 2 ETRS valve spring force.