Don's Heavy Duty Truck Repair

Mobile and shop-based heavy duty truck repair serving drivers across Southern Illinois.

Repair Heavy Duty Trucks Without the Downtime

Mobile-first service reaching drivers from Metropolis to Mount Vernon

Don's Heavy Duty Truck Repair has been in the industry since 2007, and when the business was formally established in Johnston City, IL in 2017, the mission stayed the same: get trucks back on the road with as little disruption as possible. Most of what they do is mobile — they come to you, whether you're stranded on an interstate or parked at a job site. That kind of reach matters in a region where being stuck isn't just inconvenient, it's costly.


Whether you're a repeat regional customer or a traveler passing through Southern Illinois, your situation shapes how this service gets delivered. Don's handles everything from emergency roadside truck repair and air leak repair to mobile fuel delivery, so the solution comes to wherever the problem is — not the other way around.


Don's Heavy Duty Truck Repair is family owned and operated, and that carries real weight in how they approach the work. There's accountability built into every job, and a reputation that depends on doing things right the first time.

We keep them Big Wheels rollin'

Built for the Road, Ready When You Are

Family owned and operated, with 24-hour mobile service available throughout the week.

Heavy Duty Truck Repair

From semi trucks to trailers, this is full-scope heavy duty work handled at your location or on the road.

Diesel Engine Repair

Diesel engine issues get diagnosed and repaired with the tools and experience that heavy equipment demands.

Truck Diagnostic Services

Accurate diagnostics take the guesswork out of what's wrong before any repair work begins.

Transmission Repair & Service

Transmission service for heavy duty trucks, handled with the depth and attention that drivetrain work requires.

How a Mobile Repair Call Actually Works

Because the majority of Don's work happens in the field, the process is built around clear expectations from the first call forward. Free estimates are offered so you know what you're looking at before any work begins, and the $50 off diagnostic promotion means getting an accurate read on your truck's condition doesn't carry unnecessary risk. Once a diagnosis is confirmed, the repair plan is communicated directly — no guesswork, no surprises mid-job.


24-hour mobile service runs throughout the week, including weekends, which means a breakdown on a Saturday doesn't leave you waiting until Monday. Whether it's a coolant and radiator issue, a brake repair, or an electrical system fault, the response comes to your location with the equipment to handle it on the spot.



Here's a snapshot of what that service coverage looks like in practice:

Free estimates available before any repair commitment is made

$50 off diagnostic services — a concrete starting point when something's wrong and you need answers fast

Weekend and after-hours mobile response, so unplanned breakdowns don't derail your schedule

Service coverage stretching from Metropolis to Ridgway, reaching both interstate travelers and local fleet operators throughout the region

Free estimates available before any repair commitment is made

$50 off diagnostic services — a concrete starting point when something's wrong and you need answers fast

Reach out to Don's Heavy Duty Truck Repair to request your free estimate and get the repair process started.

The Standard Behind Every Truck That Leaves a Job

Don's Heavy Duty Truck Repair has operated under the same name and the same standard since the business was built — and that consistency isn't accidental. Being family owned and operated in Johnston City means their name is on every truck they touch, and the work reflects that. DOT inspections, preventive maintenance, suspension and steering repair, and transmission service all get the same level of care as emergency roadside calls.


Dependability in this industry isn't built through promises — it's built through showing up, doing the job right, and being there the next time something needs attention. Don's serves both travelers on Southern Illinois interstates and repeat customers who've come to rely on them for the long haul, and that mix of one-time and returning work speaks to how the business has sustained itself over time.


Schedule your service with Don's Heavy Duty Truck Repair and put your truck in the hands of a team that treats every job as a reflection of their own reputation.

Our Reviews

Our Featured Resources

Ideas, Tips & Trends You’ll Actually Use

By Dons Heavy Duty Truck Repair • October 21, 2026
Truck diagnostic services in Carbondale, IL use mobile scan tools and load testing to identify engine, transmission, and electrical faults before repair begins.
By Dons Heavy Duty Truck Repair • October 21, 2026
Diesel engine repair in Marion, IL includes on-site injector replacement, coolant system work, and sensor diagnostics for Class 7 and Class 8 trucks.
By Dons Heavy Duty Truck Repair • October 21, 2026
Mobile heavy duty truck repair in Johnston City, IL brings diagnostics and service to your location, avoiding tow delays across southern Illinois.

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Need Reliable Heavy-Duty Truck Repair?

Contact us today for dependable truck repair and maintenance in Johnston City, IL. From diesel engine diagnostics to emergency roadside assistance, we're here to keep your truck running and get you back on the road.

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