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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 360 (Automatic Transmission - 10L60 (MQA) Or 10L80 (MHU) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P2820 or P2821 >> DTC Descriptor

DTC Descriptor

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
DTC P2820

Transmission Control Solenoid Valve 9 Stuck Off

DTC P2821

Transmission Control Solenoid Valve 9 Stuck On