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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LS >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 8L90 (M5U) - Description And Operation >> Description And Operation >> Reverse >> Notes

Description And Operation: Reverse: Notes

When the gear selector lever is moved to the Reverse (R) position (from the Park position) the normally high 4-5-6-7-8 reverse control solenoid valve and the 1-2-3-4-5 reverse boost solenoid is commanded ON and the following changes occur in the transmission's hydraulic and electrical systems: