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Home >> GMC >> 2021 >> Acadia AT4 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P27EF, P27F1, or P27F2 >> Conditions for Setting the DTC

Conditions for Setting the DTC

P27EF 

Transmission Range Control Valve 2 Position Switch = 1.3 to 1.5 V - For greater than 1 s

P27F1 

Transmission Range Control Valve 2 Position Switch = Less than 0.4 V - For greater than 1 s

P27F2 

Transmission Range Control Valve 2 Position Switch = Greater than 2.5 V - For greater than 1 s