Harmon Truck Service
Heavy-Duty Truck Repair Shop in Sullivan, MO
Welcome to Harmon Truck Service, your premier destination for unparalleled heavy-duty truck repair services and leasing solutions in Sullivan, MO. Since our inception in 2015, we have been committed to excellence, innovation, and customer satisfaction, carving out a niche in the truck service industry. Located between Rolla, MO & St. Louis, MO along Interstate 44, we provide our truck repair services in-shop in Sullivan, MO & via mobile service within a 100 mile radius for mobile truck repair & roadside assistance services. Contact us today with any questions, to request a quote, and to schedule service!




Our Heavy-Duty Diesel Mechanic Services

Bus & Coach Repair

Custom Truck Modifications

DOT Inspection

Fleet Services

General Diesel Repair

Heavy Equipment Repair

Heavy-Duty Truck Parts

Mobile Truck Repair

Preventive Maintenance
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RV & Motorhome Repair

Roadside Assistance

Towing Service

Trailer Repair

Truck Welding Services
Contact Us
Get in touch with Harmon Truck Service today to schedule heavy-duty truck repair services! We're located between Rolla & St. Louis, MO along Interstate 44. Give us a call or fill out our service request form!