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Home >> GMC >> 2020 >> Acadia SL >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W M3V) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P2820 or P2821 >> Circuit/System Description

Circuit/System Description

The solenoid valve controls the oil flow to the appropriate component : Clutch Selector Valve

DTC P2820, P2821 sets only when there is a hydraulic/mechanical problem.

For an overview of the component/system, refer to :