Smiths Truck Service Heavy-duty help, wherever the road stops.

24/7 Roadside Repair · Mount Airy, NC

24/7 mobile semi-truck and trailer roadside repair across North Carolina and Virginia

Name: Smiths Truck Service
Address: Mount Airy, NC

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 for stranded drivers, owner-operators, and fleets.

Call 336-320-8509

See heavy-duty services

Serving roughly 60 miles across NC and VA — check coverage.

A modern white semi-truck with a polished tanker trailer parked on a roadside in a forested area during the day.

Heavy-duty services

Mobile semi-truck and trailer repair for owner-operators, drivers, and fleets across North Carolina and Virginia.

Nine groups of roadside work

Each group links to the full service directory, where every repair has its own page.

Emergency roadside repair & diesel diagnostics

24/7 emergency semi-truck roadside repair and mobile heavy-duty diesel diagnostics.

Service directory

Mechanic works on a car's engine components

Engine & emissions diagnostics

Check engine and stop engine diagnostics, DEF system repair, DPF, DOC & SCR emissions work, NOx sensors, forced regens and derate diagnostics.

Service directory

The open hood of a yellow truck revealing a red Cummins engine and complex wiring

Cooling system repairs

Coolant leaks and radiator repair, water pumps, thermostats and hoses.

Service directory

Air brake lines and chambers on a semi trailer

Air & brake repairs

Air leaks, air lines and manifolds, brake chambers, shoes and drums, semi-truck and trailer brake repair, trailer air valves and electrical repair.

Service directory

Mechanic in a garage fixing the wheel of a blue truck. Industrial vehicle maintenance.

Wheel, hub & bearing work

Wheel seals, hub caps and bearings.

Service directory

Close-up of a car battery with wires connected

Electrical & starting systems

Batteries, alternators and starters, electrical wiring, lights and sensors.

Service directory

Driveline and transmission components on a service truck

Transmissions, differentials & driveline

Transmissions, clutches and actuators, differentials and driveline diagnostics.

Service directory

Turbocharger and intercooler hoses being inspected

Turbo & intercooler issues

Turbo boost leaks, boots and intercoolers.

Service directory

Tire replacement

Semi-truck and trailer tire replacement, new or used only — no patching.

Service directory

A white semi truck parked on the side of the road

Truck systems

Commercial semi-trucks and trailers, system by system

We work on the systems that stop a commercial truck: engine, emissions, cooling, air, brakes, electrical, driveline, turbo, and tires. Find the area of concern below, then continue to the service directory for the matching repair.

Browse the service directory

Roadside Repair Limits

What can and can’t be finished roadside

Clear expectations before you call: not every repair can be completed roadside, and completion depends on the fault and conditions.

Can every repair be completed at the roadside?

No. Not every repair can be completed roadside. Completion depends on the fault and the conditions at your location, and some work may require a shop.

What happens when I call about my truck?

Do you diagnose before discussing repairs?

Can you patch a damaged truck or trailer tire?

Where can I see the full list of services?

Want the likely diagnostics and options?

See service details

Read the FAQs

Coverage

Coverage across North Carolina & Virginia

Based in Mount Airy, NC, we provide on-site mobile heavy-duty repair across approximately 60 miles of North Carolina and Virginia. Call to discuss your location and see whether you may be within reach.

View full coverage

or call 336-320-8509

60milesservice radius from Mount Airy, NC

Based in Mount Airy, NCMobile service across roughly 60 miles into North Carolina and Virginia, including coverage along I-77, I-40, and US-52.

North CarolinaMount Airy, Lowgap, Dobson, Pilot Mountain, Pinnacle, King, Rural Hall, Winston-Salem, Clemmons, Mocksville, Statesville, Elkin, Jonesville.

VirginiaCana, Galax, Fancy Gap, Hillsville, Fort Chiswell, Wytheville, Bland, Bastian.

Highway coverage

Main corridors we cover

Roadside coverage around the corridors drivers run most, across North Carolina and Virginia. Check the main routes below, then see the full coverage page for community details.

Service Communities

Communities across North Carolina & Virginia

Based in Mount Airy, NC, we serve roughly 60 miles across North Carolina and Virginia. Check the list for your community, then confirm your location with us.

North Carolina

Mount AiryLowgapDobsonPilot MountainPinnacleKingRural HallWinston-SalemClemmonsMocksvilleStatesvilleElkinJonesville

Virginia

CanaGalaxFancy GapHillsvilleFort ChiswellWythevilleBlandBastian

Not Listed?

Call 336-320-8509 with your location and we’ll talk through whether we may reach you. Full coverage details, including I-77, I-40, and US-52, are on the coverage page.

View full coverage details

Dispatch to Diagnosis

From your call to repair options in four steps

One phone call starts it. We discuss your location and the fault, talk through dispatch, diagnose the problem, then lay out your repair options — no guaranteed arrival time, no guaranteed outcome, just a clear next step.

01 Call

Tell us where you are

Call 336-320-8509 and tell us your location along with what the truck is doing — warning lights, noises, leaks, or a breakdown.

02 Dispatch

Discuss dispatch

We talk through your situation and whether mobile roadside service can reach you. Dispatch depends on your location, the fault, and road conditions.

03 Diagnose

Diagnose the fault

On site, we run heavy-duty diagnostics — engine, emissions, air, brakes, electrical, or driveline — to find the actual cause.

04 Options

Discuss repair options

We explain what can be completed roadside and what may require a shop, then you decide how to proceed.

Call 336-320-8509

See service details

Commercial Diesel Focus

Heavy-duty work for the trucks that keep freight moving.

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.

Built for commercial diesel

On-site commercial diesel repairs for owner-operators, truck drivers, and commercial fleets throughout North Carolina and Virginia.

Mobile heavy-duty diesel diagnostics for semi-trucks and trailers
Check Engine and Stop Engine diagnostics, DEF system repair, and forced regens

Systems we service on site

Cooling, air, brakes, electrical, driveline, turbo, and tire systems on commercial semi-trucks and trailers.

Transmissions, clutches, differentials, and driveline diagnostics
Semi-truck and trailer tire replacement, new or used only, no patching

View heavy-duty services

Contact Smiths Truck Service

Technician inspecting a semi-truck engine at a roadside stop

24/7 Emergency Dispatch

Call now for 24/7 roadside repair

Semi-truck and trailer down? Call 336-320-8509 any hour of the day or night for mobile heavy-duty roadside repair across North Carolina and Virginia. Roadside completion depends on the fault and conditions.

Call 336-320-8509

Open 24/7 Mount Airy, NC base Serving NC & VA smithstruckservice@gmail.com