A method of determining the trim set value of a vehicle body leveling system comprising the steps of: receiving a trim set command; responsive to the trim set command, retrieving a sensor output from a vehicle height sensor; determining a difference value between the sensor output and a predetermined offset, wherein the offset is indicative of an effect an average sized operator would have on the vehicle height as measured by said height sensor; and programming the difference value into a memory of a level control system, wherein the programmed value is the trim set value for the level control system.