When your semi truck breaks down, every minute your rig sits still costs you time and revenue. At Mobile Diesel Truck Repair, we deliver fast, professional, and fully mobile semi truck repair and tractor-trailer roadside service anywhere in the Dallas–Fort Worth Metroplex. We come directly to your breakdown location — roadside, weigh station, truck stop, yard, or job site — with the tools, parts, and experience needed to get you rolling again.
Whether you’re hauling locally or running long-haul, our certified mobile technicians are available 24 hours a day, 7 days a week.
Call Now for 24/7 Semi Truck Repair: 855-457-1170
Fast Dispatch • Mobile Roadside Service • No Hidden Fees
Fast, Reliable Mobile Semi Truck Repair Across DFW
Our mobile units are fully equipped to handle on-site repairs for all semi trucks and tractor-trailers, including Freightliner, Peterbilt, Kenworth, International, Volvo, Mack, and Western Star.
We diagnose and repair your semi on the spot to keep downtime as low as possible. No towing required in most cases.
Why Truckers Choose Our Mobile Semi Truck Repair Service
24/7 Emergency Roadside Assistance
Breakdowns never happen at a convenient time. We provide round-the-clock tractor-trailer repair for:
- No-start issues
- Air leaks
- Electrical failures
- Locked brakes
- Overheating
- Fuel delivery problems
- Brake emergencies
We arrive quickly and ready to work.
Certified Heavy-Duty Diesel Technicians
Our mechanics are trained in:
- Tractor-trailer systems
- Heavy-duty diesel engines
- Air brake systems
- Aftertreatment components (DPF/DEF/EGR)
- ECM diagnostics and fault codes
We repair your semi truck right the first time.
Advanced Computer Diagnostics
Using OEM-level diagnostic software, we accurately detect problems with:
- Engine controls
- DEF/DPF systems
- Transmission controls
- ABS & brake systems
- Sensors & modules
- Electrical faults
No guesswork — just precise diagnostics and fast repairs.
Fair, Transparent Pricing
We always provide:
- Upfront estimates
- No hidden fees
- No unnecessary repairs
- Honest recommendations
You’ll know exactly what your repair will cost before we begin.
Complete Semi Truck & Tractor-Trailer Repair Services
We repair every major system on your rig, right where it’s parked.
Engine Repair & Diagnostics
Common semi truck engine issues we fix:
- Loss of power
- Excessive smoke
- Engine misfires
- Turbocharger problems
- Overheating
- Fuel system issues
- Leaks & smoking
- Sensor failures
- Fault code troubleshooting
We service Cummins, Detroit Diesel, Paccar, Caterpillar, Volvo, Mack, and more.
Mobile Transmission & Driveline Repair
We handle:
- Transmission diagnostics
- Gear shifting issues
- Clutch replacement
- Driveline & U-joint repair
- Transmission fluid service
- Torque converter issues
Semi Truck Brake Repair
Your braking system is critical to safety. We repair:
- Air brake leaks
- Brake chambers
- Slack adjusters
- ABS warning lights
- Hoses & lines
- Brake pads, shoes & drums
Electrical System Repairs
We diagnose and repair:
- Alternators
- Starters
- Batteries
- Wiring failures
- Shorts & grounding issues
- Trailer lighting
- Dash warnings
- Faulty sensors
Electrical issues are one of the #1 causes of breakdowns — and we fix them fast.
DPF, DEF & Aftertreatment Repair
We handle:
- DPF regeneration
- DEF pump replacement
- NOx sensor failure
- SCR system repairs
- EGR valve & cooler issues
- Derate mode diagnostics
Suspension & Steering Repair
We repair:
- Air suspension
- Airbags & leveling valves
- Shocks & struts
- Kingpins & bushings
- Tie rods & steering gears
Mobile Tire Repair & Replacement
We offer:
- Semi truck tire repair
- Tire replacement
- Blowout assistance
- Trailer tire service
On-Site Tractor-Trailer Repair — No Towing Needed
In most cases, we repair your semi truck on location, saving you:
- Towing bills
- Lost time
- Delays in delivery
- Unnecessary shop downtime
Our goal is simple: get you back on the road fast and safely.
📞 Call for Emergency Roadside Service: 855-457-1170
Semi Truck Fleet Repair & Maintenance
We offer fleet programs for:
- Owner-operators
- Logistics companies
- Delivery fleets
- Construction fleets
- Hotshot operators
- Local trucking companies
Services include:
- DOT inspections
- PM service
- Oil & filter changes
- Cooling & fuel system service
- Brake inspections
- Aftertreatment cleaning
Keep your fleet on schedule and reduce long-term repair costs.
Service Areas in Dallas–Fort Worth
We provide mobile semi truck repair throughout the DFW Metroplex, including:
- Dallas
- Fort Worth
- Irving
- Arlington
- Carrollton
- Grand Prairie
- Garland
- Denton
- Plano
- Lewisville
- Mesquite
- Wylie
- Houston
- And all nearby cities
If you’re in DFW, we’ll come to you.
Frequently Asked Questions
Do you offer 24/7 mobile semi truck repair?
Yes. We provide 24/7 mobile semi truck repair and roadside tractor-trailer service across the Dallas–Fort Worth Metroplex. Whether you’re stranded on a highway, at a truck stop, a weigh station, or in a customer’s yard, our technicians can be dispatched anytime — day or night. We bring the tools, parts, and diagnostics to get your rig back on the road fast.
What types of semi trucks and tractor-trailers do you service?
We service all major semi truck and tractor-trailer makes and models, including:
- Freightliner
- Peterbilt
- Kenworth
- International
- Volvo
- Mack
- Western Star
We also repair and diagnose all major diesel engines:
- Cummins
- Detroit Diesel
- Caterpillar
- Paccar
- Mack
- Volvo
- Navistar
No matter what you drive, we have the equipment and expertise to repair it.
What kind of semi truck repairs can you do roadside?
Our mobile service trucks can perform most repairs on-site, including:
- Engine diagnostics & fault code repair
- Air brake system issues
- Brake chamber replacement
- No-start problems
- Electrical and sensor failures
- Fuel system problems
- Overheating issues
- Aftertreatment (DPF/DEF/EGR) troubleshooting
- Tire, wheel, and hub issues
- Locked brakes or trailer brake problems
In most cases, you won’t need a tow — we repair your semi right where it sits.
How do I request mobile semi truck repair service?
For emergency or same-day service, call us directly at 855-457-1170.
Here’s how it works:
- Tell us your location.
- Describe the issue your truck is experiencing.
- We dispatch a mobile technician immediately.
For non-emergency repairs, DOT inspections, or planned maintenance, you can also schedule service using the contact form on our website. We work around your route and your schedule.
Call Now for 24/7 Mobile Semi Truck Repair
When your truck is down, we’re ready.
📞 Call 855-457-1170
🚚 Fast Dispatch, 24/7 Service, Certified Technicians
💪 Keeping Dallas–Fort Worth truckers on the road.
Do you need Truck Repair service?