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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (Automatic Transmission - 8L45 (M5N M5T) Or 8L90 (M5U) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2714 or P2715: Transmission Control Solenoid Valve 4 Stuck >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

The transmission control solenoid valve 4 is a high pressure, normally high, variable force solenoid. The transmission control solenoid valve 4 regulates and directs pressurized oil to the 2-3-4-6-8 clutch regulator valve. The 2-3-4-6-8 clutch regulator valve then directs pressurized oil to the 2-3-4-6-8 Clutch assembly to apply the clutch. The transmission control module (TCM) uses information from the transmission speed sensors along with serial data information from other control modules to calculate the correct gear ratio and apply the correct clutch assemblies. The TCM compares the calculated gear ratio to the commanded gear ratio. The calculated and commanded gear ratios must match.

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