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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 155 (Automatic Transmission - 4T45-E - Description And Operation) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, First Gear (With Electronic Range Select Mode) >> Forward Clutch Applies >> 1-2 Shift Solenoid Valve

1-2 Shift Solenoid Valve

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

In first gear, the PCM energizes the 1-2 shift solenoid valve and the 1-2 signal fluid pressure acts on the 1-2 shift valve.