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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 359 (Automatic Transmission - 6T70 (M7U M7W) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0667, P0668, or P0669: Control Module Temperature Sensor >> Diagnostic Aids

Diagnostic Aids

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The TCM temperature sensor is located inside of the control solenoid valve assembly and its output should resemble that of the transmission fluid temperature sensor output. During a road test, the TCM temperature should steadily increase to a normal operating temperature, and then stabilize.