About Harmon Truck Service
Harmon Truck Service in Sullivan, Missouri handles preventive maintenance and diesel-specific repair work around the clock to keep owner-operators and fleet equipment running. Located on Service Road near the I-44 corridor, the shop serves a 15-mile radius covering St. Clair, Cuba, and surrounding communities where freight and agricultural diesel traffic sustains year-round demand. Round-the-clock availability means drivers can schedule service outside standard business hours, and 24/7 support accommodates breakdowns and urgent maintenance windows that don't fit a nine-to-five calendar. Call (573) 468-5138 for diesel repair and preventive maintenance.
Gallery
Our Services
Preventive Maintenance
Diesel Specialist
Customer Reviews
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Verified Customer
Google Review
My Super Duty broke down just outside of Sullivan and these guys took care of everything for me. They arranged my tow, diagnosed the problem and worked with me to acquire the hard to find parts. They stored my truck while waiting on the ...
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Verified Customer
Google Review
Response from the owner
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Verified Customer
Google Review
We had our MH towed here on Wednesday. Very professional and knowledgeable, they have capability to work on your Motorhome inside. Both Brad & Fred have been pleasant to speak with. If you have a big rig MH needing mechanical work. This is the place!