A collapsible stock loading chute for vehicles. The chute is particularly designed for floor supported stock racks for pick-up trucks and is adapted to be slid underneath a false bed supported by a frame which receives a ramp of the chute. When withdrawn from underneath the false bed the chute ramp may be pivoted to the frame at a forward end and supported on the ground and connected to chute walls hooked to the rack to load stock. The ramp may be employed without the walls for loading haltered animals or for loading equipment or other paraphernalia. The rear wall of the stock rack is provided with a vertically slidably gate frame having a pair of hinged gate members in order that the gate may be raised to open the gate or alternatively to swing inwardly or outwardly the hinged gate members for different loading conditions.