Automatic Transmission Fluid Pump
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
The electric automatic transmission fluid pump assembly is driven by high voltage AC which is controlled by the drive motor/generator power inverter module assembly. The purpose of the auxiliary fluid pump motor is to supply oil pressure to the transmission for lube, cooling and clutch application during vehicle propulsion. The automatic transmission fluid pump motor is commanded on when the propulsion system is active.