A grain cart includes a lower auger conveyor section and an upper auger conveyor section pivotally movable relative to the lower auger conveyor section between a first position and a second position. The lower auger conveyor section further includes an auger feed gate movable between a closed position and an open position. The grain cart further includes a movement actuator adapted to move the upper auger conveyor section between the first position and the second position. The grain also includes a control system including an auger feed gate position sensor operatively coupled to the movement actuator and functioning to control the movement actuator based on input from the auger feed gate position sensor to provide a lock out function preventing the movement actuator from moving the upper auger conveyor section towards the first position only when the auger feed gate is in the open position.