About Smiths Truck Service
A 24/7 mobile heavy-duty semi-truck and trailer roadside repair company based in Mount Airy, NC, serving North Carolina and Virginia — that is the whole of what we do, and who we do it for.
Mobile heavy-duty repair for commercial trucks and trailers across North Carolina and Virginia
What we do
Smiths Truck Service is a 24/7 mobile heavy-duty semi-truck and trailer roadside repair company based in Mount Airy, NC, serving North Carolina and Virginia. We come to your truck with mobile heavy-duty diesel diagnostics and repair, so a breakdown on the shoulder doesn't have to mean a tow to a shop.
We serve owner-operators, truck drivers, and commercial fleets with on-site commercial diesel repairs. Whether you're a single truck running I-77 or a fleet decision-maker covering both states, our focus is the same: get a capable technician on the phone, diagnose the fault, and discuss what can be done where your truck sits.
Commercial diesel work, done where your truck stopped.
Help around the clock
Smiths Truck Service runs a 24/7 mobile heavy-duty semi-truck and trailer roadside repair service. When a truck is down, call 336-320-8509 and we discuss the fault, your location, and what can be handled on the roadside.
Roadside completion depends on the fault and the conditions at the scene — we say clearly what can be finished there and what needs a shop.
Commercial diesel diagnostics and repair
We work on-site commercial diesel systems: check engine and stop engine faults, DEF and emissions diagnostics, forced regens and derate, coolant and air system leaks, brakes, electrical, driveline, and turbo boost issues.
Diagnostics come first, so the repair option we discuss with you fits the actual fault rather than a guess.
Owner-operators, drivers, and fleets
We serve owner-operators, truck drivers, and commercial fleets needing on-site commercial diesel repairs across North Carolina and Virginia, from our base in Mount Airy, NC.
Coverage runs approximately 60 miles across the two states, along I-77, I-40, and US-52 — check the service area to see whether your location falls within it.
Truck down? Call for 24/7 roadside repair
Smiths Truck Service is a 24/7 mobile heavy-duty semi-truck and trailer roadside repair company. One call starts a dispatch discussion, a diagnosis, and your repair options.