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Home >> GMC >> 2022 >> Terrain SLT, FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Diagnostic Information And Procedures (2 Of 2) >> Diagnostic Information and Procedures >> DTC P187D, P18E7, or P18E8 >> DTC Descriptor

DTC Descriptor

DTC P187D

Transmission Park Valve Stuck On

DTC P18E7

Transmission Park Valve Position Sensor 1 Performance

DTC P18E8

Transmission Park Valve Position Sensor 2 Performance