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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 >> Reverse (Hydraulic Circuits With ETRS) >> Notes

Reverse (Hydraulic Circuits With ETRS): Notes

When the gear selector is moved to the Reverse (R) position (from the Park position) the 5-7 reverse solenoid, the clutch select control solenoid and the VFS S4 solenoid is commanded ON and the 1 reverse and 6-7-8-9 solenoid is commanded OFF and the following changes occur in the transmission's hydraulic and electrical systems: