Allison Doc is a diagnostic system designed for use with allison’s 3000/4000 product families transmissions, 1000/2000 product families transmissions, and transmissions using cec3/cec2/cec1 controls.
Detroit Diesel Corporation is an American diesel engine manufacturer headquartered in Detroit, Michigan. It is a subsidiary of Daimler Truck North America, which is itself a wholly owned subsidiary of the multinational Daimler Truck AG