Illinois Locations


Interstate Companies has two locations in Illinois, in Carol Stream and Rockford. At these locations, we offer complete truck and trailer repair services, including warranty work for Detroit Diesel Engines, MTU and Allison Transmission. We offer many other high quality product lines to meet the needs of our wide variety of customers.

Our branches also carry a complete inventory of genuine replacement parts and components for customers across many markets, including the marine, construction, industrial, mining and power generation markets.

Both of our Interstate PowerSystems locations in Illinois belong to the WheelTime network. Membership in the network means we deliver assistance quickly, getting you a diagnosis within two hours. Our technicians are committed to providing accurate estimates for repair costs and time in shop. We want to get you on the road quickly with a truck that is ready to roll. We also provide emergency service 24/7.

Our Interstate PowerSystems locations in Illinois sell and service high-quality MTU Onsite Energy generators for primary and standby use. Our factory-certified technicians service all brands of generators for customers throughout the region, including generators installed in hospitals, schools, data centers, businesses and municipal facilities.

Learn more about the specific products and services available at our Carol Stream and Rockford locations today.