Tri-County International Trucks, Inc. is Navistar Corporation’s franchise holder and authorized dealership for its subsidiary, International Truck and Engine Corporation, and its products and services in Southeast Michigan and the surrounding areas. Tri-County International and its predecessor, C&S Motors, have successfully served the Michigan business community for over 50 years. With five Tri-County branch locations in Dearborn , Flint , Jackson , Livonia , and Warren and its Idealease division represented in each of the branches, Tri-County International is strategically positioned as not only the leading provider of new & used International trucks, diesel parts and service including Cummins engine repair in our territory, but also as a source for full-service truck leasing, contract maintenance, and truck rental – short and long term.