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Home >> GMC >> 2022 >> Terrain AT4 >> 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 P18A2 or P18A4 >> Conditions for Setting the DTC

Conditions for Setting the DTC

P18A2 

The control module detects a short to ground.orThe control module detects an open circuit. - For greater than 1 s

P18A4 

The control module detects a short to voltage. - For greater than 1 s

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