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!





Proud member of the AMBEST Service Centers network
Harmon Truck Service is now a proud member of the AMBEST Service Centers network—one of America’s most trusted alliances of independent truck service providers. This partnership reinforces our commitment to delivering reliable, professional maintenance backed by the nationally recognized AMBEST Freedom Warranty, giving drivers confidence that their trucks are in expert hands wherever the road takes them.
Our Heavy-Duty Diesel Mechanic Services
.avif)
Coach and RV Repair

DOT Inspection

Fleet Services

General Diesel Repair

Heavy Equipment Repair

Heavy-Duty Truck Parts

Mobile Truck Repair

Preventive Maintenance

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!