Q32A Shift solenoid Valve 1
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
Shift solenoid valve 1 is a normally closed On/Off solenoid valve. When commanded On, the solenoid valve directs fluid to the clutch select valve, which moves the valve in the stroked position. Fluid pressure from the R1/4-5-6 regulator valve is directed through the clutch select valve to the R1 clutch in the stroked position. When shift solenoid valve 1 is commanded Off, the clutch select valve returns to the normal position. This allows fluid from the R1/4-5-6 regulator valve to be directed to the 4-5-6 clutch.