With a dedicated focus on commercial assets and advanced diagnostic software to identify issues immediately, we efficiently get commercial diesel trucks in and out. By fixing the root cause the first time and providing proactive maintenance, we help you avoid roadside breakdowns that stall your operations and eat your profits.
Fleets & Owner-operators
Your Trucks Work Hard. So Do We.
Your diesel truck is your livelihood. Keep it on the road with the diesel truck repair specialists in DFW who’ve kept owner-operators, contractors, and fleets moving since 2008.
Diesel Repair for the Hardest Workers in Texas
Whether it’s just you and your diesel truck or a full commercial fleet, the Diesel Pros team understands that every minute you’re not moving, you’re not making money.
Learn more about our services
Bumper-to-Bumper Service to Keep Your Diesel Trucks in the Field
Reach the 500,000-mile club. Tap into our team's knowledge of commercial trucks from light-duty diesel trucks to the cult-classic Cummins N14 and anything in between so you can keep your rig going for years to come.
Fleet maintenance programs
Prevent costly roadside breakdowns with regular, proactive oil, fluid, and filter maintenance.
Heavy-duty diagnostics
Advanced software pinpoints your sensor, electrical, and performance issues the first time.
Drivetrain and fuel systems
Expert repair for high-pressure pumps and heavy-duty diesel transmissions built to haul.
Brakes and suspension
Professional-grade safety services for diesel trucks carrying maximum payloads day in and day out.
Decades of Experience with Diesel Engines that Power Blue-Collar Texas
From the latest high-tech powerhouses to the legendary engines heading toward 1M miles, our mechanics have the diesel engine experience to keep your truck going and your money flowing.
Modern Engines (2011–present)
Advanced diagnostics and repairs for the complex emissions and high-pressure systems of modern diesel workhorses.
Kenworth
- PACCAR: MX-11, MX-13, PX-7, PX-9
- Cummins: ISX15, X15, ISL9, L9, B6.7
Peterbilt
- PACCAR: MX-11, MX-13, PX-7, PX-9
- Cummins: X15, ISX15, ISL9, L9, B6.7
Mack
- Mack (Volvo Powertrain): MP7, MP8, MP10
- Cummins: L9, B6.7 (Often found in medium-duty MD series)
Freightliner
- Detroit Diesel: DD13, DD15, DD16, DD5, DD8
- Cummins: X15, ISX15, ISL9, L9, B6.7, ISB6.7
Western Star
- Detroit Diesel: DD13, DD15, DD16
- Cummins: X15, ISX15, L9
Legacy Engines
Specialized care for high-mileage engines that require advanced knowledge and service to stay reliable past the 300k mark.
Kenworth
- Caterpillar: C15, C13, C12, 3406E
- Cummins: ISX (Signature 600), ISM, ISL, ISC, 6BT 5.9
- PACCAR: PX-6, PX-8 (Early versions)
Peterbilt
- Caterpillar: C15 (ACERT and single turbo), C13, C12, 3406E, 3126
- Cummins: ISX, ISM, ISL, ISC, M11, N14 Select Plus
- Detroit Diesel: Series 60 (12.7L and 14L)
Mack
- Mack: ASET series (AI, AC), AMI, E7 (E-Tech), E-9 (V8)
- Cummins: ISL, ISC (In vocational models)
Freightliner
- Detroit Diesel: Series 60 (12.7L/14L), MBE 900, MBE 4000
- Caterpillar: C15, C13, C12, 3406E, 3126B, C7
- Cummins: ISX, ISM, ISL, ISC, ISB, N14
- Mercedes-Benz: OM904, OM906, OM460
Western Star
- Caterpillar: C15, C16, C13, 3406E
- Detroit Diesel: Series 60
- Cummins: ISX, N14, ISM
Why Owners Choose Us For Their Commercial Diesel Truck Repairs
Bryan Smith
2 weeks ago
The Guys at Diesel pros did a awesome job on my transmission and worked with my Extended vehicle warranty and got it all figured out for me and saved me a bunch of money so I appreciate it and the truck is running perfect transmission shifts like a new one
Samuel Cox
3 weeks ago
These guys are awesome. I called Matt and told him year make model.Matt told to drop it off. I dropped it off on tuesday afternoon and they sent me the message my thuck was done. Everything i wanted was achieved. I could not be happier with the service done.
Orlando Perez
3 weeks ago
Excellent service, excellent work on the vehicle, 100% recommended
Ryan Singh
1 month ago
I’ve been taking my truck to Diesel Pro’s for the past 8 years, and I wouldn’t trust anyone else with it. They’ve worked on my trucks countless times and have never let me down. Their work is consistently reliable, professional, and done right the first time. If you’re looking for a shop you can trust with your diesel, I 100% recommend Diesel Pro’s. Great people and great service every time!
Partner with our team that brings a relentless work ethic and a sense of urgency to your fleet, ensuring your business stays on schedule and on the road.
Frequently Asked Questions
How do you help minimize downtime for commercial fleets?
Do you work on older diesel engines with high mileage?
Every day. We specialize in legacy platforms like the Caterpillar C15 and 3406E, the Cummins 5.9L, the Detroit Diesel Series 60 (12.7L), and more.These workhorses require knowledge gained over decades to stay reliable past 300k miles. We focus on maximizing your truck’s service life so you can get every bit of value out of your investment.
What makes your diagnostic process different?
We eliminate the parts-swapping guesswork using dealer-level diagnostic tools to pinpoint failures or potential problems on your truck. Our team looks at everything from end to end, and afterward you’ll get an itemized estimate broken down by each of your diesel truck’s components — brakes, transmission, fuel systems, drivetrain, etc. This gives you a transparent explanation of the state of your vehicle and a clear repair plan that gets you back on the road safely and efficiently.
What is the benefit of an independent specialist over a large dealership?
Corporate dealerships often focus on volume and up-selling unnecessary repairs. As independent diesel truck specialists, our focus is on your bottom line and getting you back on the road. We provide the same dealer-level diagnostics and technical expertise but with personal accountability and honest recommendations that don’t break the bank. Instead of months in at a dealership, you’ll be in and out of our shop quicker so you can get back to work.
How does the diagnostic fee work?
The diagnostic fee of $300 covers the cost of a bumper-to-bumper inspection to identify the root cause(s) behind your truck’s problem plus other potential issues or failures.
When you decide to get your vehicle repaired at Diesel Pros, we will apply this diagnostic fee to the price of your repair, decreasing the total by $300.
Whether you have your vehicle repaired by Diesel Pros or not, you will know what it takes to get your truck back on the road and know about your future service needs early to keep maintenance and repair costs down.
Let’s Fix Your Diesel Truck and Protect Your Bottom Line
Partner with the Hurst and Fort Worth diesel repair specialists who respect your timeline and your budget. Get in touch for diagnostic scheduling or a repair estimate.