A lift system for integration with the air suspension system of a truck for raising the rear of the truck so that the trailer can be attached and the landing gear let up includes an air dump valve, two air control switch valves, one one-way valve, one air gauge rated to 100 psi., one air regulator, an on/off control switch, a safety alarm buzzer, and the appropriate number and size of fittings and airlines. The on/off control switch is located within the cab of the truck and allows the operator to manually engage or disengage the lift system. The lift system is interconnected to and powered by the truck's main battery and main air supply whereupon engagement of the lift system facilitates the alignment and connection of the rear of the truck to the trailer and removes the weight from the truck's landing gear by raising the landing gear so that the landing gear can be let up.