Mobile diesel repair that comes to you.
Breakdown on the shoulder, truck down in the yard, trailer stuck at the dock? Stephens Truck & Trailer brings a fully equipped service truck and gets you rolling again — no tow, no shop wait.
✔ Dealership-level diagnostics ✔ Licensed & insured ✔ Fleet accounts welcome
Our Specialties
Full-scope diesel and trailer service, done wherever your equipment is parked.
Dealership-Level Diagnostics
Advanced computer diagnostics for engine, aftertreatment, transmission and ABS faults — the same depth of troubleshooting you would get at a dealer, right where your truck sits.
Diesel Engine Repair
Diagnostics, fuel system, turbos, injectors, cooling, belts and hoses. We find the real problem the first time.
Brake Service
Air brake repair, adjustments, drums, shoes, chambers and slack adjusters — keep DOT-ready and safe.
Electrical & Lighting
Starters, alternators, batteries, wiring faults, trailer lights and ABS circuits.
Trailer Repair
Axles, bearings, suspension, landing gear, doors, floors and reefer-trailer mechanical support.
PM & Oil Service
Preventive maintenance programs, oil and filter changes and inspections that stop breakdowns before they start.
Built for Drivers & Fleets Who Can't Wait
Every hour parked is money lost. We built this business around getting you back on the road.
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ASE World Class Certified
Nationally recognized technician certification, backed by dealership-level diagnostic capability.
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We Come to You
Roadside, truck stop, yard, or job site — the shop comes to the truck.
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Straight Answers
You'll know what's wrong, what it costs and how long it takes before work starts.
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Owner-Operator Friendly
One truck or fifty — same attention, same fair rates.
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Reliable On-Site Service
We show up when we say we will, with the tools and common parts to finish the job.
Need it fixed today?
Call or text with your location, unit type and what it's doing. We'll tell you how fast we can be there.
Call (417) 506-9629How It Works
Four simple steps from breakdown to back on the road.
Call or Text
Tell us where you are, what you're running and what's wrong.
We Get You Rolling
We talk through the problem and give you an arrival time.
We Roll Out
Our service truck arrives equipped to diagnose and repair on site.
Back to Work
Repair finished, you're paid-up simple, and your wheels are turning.
Service Area
Mobile service across the Four-State area, up to 100 miles from our Joplin base (the circle on the map). Driving through and not sure if you're in range? Call or text us your highway and mile marker or nearest exit and we'll tell you right away.
Common Questions
Are you really certified, and can you diagnose like a dealer?
Yes. Our technician is ASE World Class certified and equipped for dealership-level diagnostics, so tough fault codes and electrical gremlins get solved on site instead of being sent to a dealer.
What types of vehicles do you work on?
Heavy and medium duty diesel trucks and commercial trailers — tractors, box trucks, dump trucks, flatbeds, dry vans and more.
Do you offer emergency service?
Yes. Call us during our open hours (3pm–3am, all weekend) and we'll get to you as quickly as we can. Breakdowns need a phone call — please don't use the request form for emergencies.
How much does a service call cost?
Our service calls are a call-out fee plus a 2-hour minimum labor charge, plus any parts your truck or trailer needs. Every repair is different, so call us and we’ll talk through what to expect.
Can you handle fleet maintenance?
Absolutely. We set up recurring PM schedules and priority service for fleets of any size.
How far will you travel for a service call?
Up to 100 miles from our Joplin base. Most drivers aren't local and can't tell how far they are, so just call or text your highway and mile marker (or nearest exit) and we'll confirm if we can reach you.
What forms of payment do you accept?
Card, ACH and company checks for approved fleet accounts. Just ask when you call.
Truck down? Call us.
(417) 506-9629Call or text for breakdowns — it's the fastest way to reach us.
Email: service@stephenstruckandtrailer.com
Hours: 3pm–3am · Open all weekend
Area: The Four-State area — Missouri, Kansas, Oklahoma & Arkansas · up to 100 miles from Joplin