Commercial Fleet Truck Repair Services in Raleigh, NC

Our Repairs

Triangle Fleet Services provides comprehensive diesel truck repair and maintenance services for heavy-duty trucks & commercial fleets from our shop in Raleigh, North Carolina. Our diesel mechanic team has expertise repairing a wide range of truck manufacturers, from Peterbilt & Kenworth, to Mack & Volvo. Our shop has all of the tools and tech needed to get the job done right, whether you require brake maintenance or diesel engine repair. Get in touch today to request a quote & to schedule service!

919-659-5497

About Our Heavy-Duty Diesel Truck Repair Services

At Triangle Fleet Services, we take care of more than just truck repairs. We support the businesses behind the wheels. Based right here in Raleigh, our family-owned shop understands the significant impact your fleet has on your daily operations. That’s why every service is delivered with transparency, consistency, and a focus on keeping your vehicles on the move.

Our work covers fleets of all sizes, from light-duty service trucks, commercial haulers, and even heavy equipment; we fix it all. When trust your fleet with Triangle Fleet Services, we guarantee that you will always get straight answers, dependable repairs, and a team that knows your time matters.

Our technicians are experienced with a wide range of models and platforms, including:

Freightliner (Cascadia, M2, FL Series)
Peterbilt (579, 389, 337)
Kenworth (T680, T800, W900)
International (LT, DuraStar, MV Series, HV Series)
Mack (Anthem, Granite, Pinnacle, LR)
Volvo (VNL, VNR)
Hino (268, 195, L Series)
Isuzu (NPR, NQR, FTR)
Western Star (4700, 4900, 5700XE)

No matter what your fleet includes, our team is trained to work on Detroit Diesel, Cummins, PACCAR, MaxxForce, Volvo, Hino, and Isuzu powertrains, as well as mDRIVE, Allison, Eaton Fuller, and I-Shift transmissions.

Our Comprehensive Repair Services Include:

DOT inspections with clear recommendations
On-site mobile truck repair for minimal disruption
Preventative maintenance tailored to your operation
Steering, axle, brake and suspension repairs
Transmission and clutch services
HVAC, cooling system, and fuel system repairs
Engine diagnostics, repair and after treatment service

When trucks are down, business slows down. Our experienced team is here to make sure that doesn’t happen. Triangle Fleet Services helps you stay ready for the road, today and every day.

Keeping Commercial Vehicles Safe with DOT Inspections

Trucks are our passion, but safety and compliance are our priority. We’re certified to perform federal DOT inspections for commercial vehicles of all sizes, including trucks, buses, and trailers. Our technicians follow every regulation to the letter and explain what’s needed in plain language. If we find something wrong, we’ll walk you through the fix, because you deserve more than a checklist; you deserve clarity.

Mobile Repair Service That Comes to You

Why waste time bringing your fleet vehicles to the shop for repair when your trusted truck techs can come to you? With mobile diesel repair services, you can rest easy knowing our team has the diagnostic tools and skills to get your trucks up and running no matter where they are.

Preventive Maintenance

Downtime is expensive. Our preventive maintenance programs are designed to keep your fleet ahead of breakdowns with routine inspections, fluid checks, filter changes, and more. We’ll track your service intervals, notify you when it’s time, and help you plan smarter, so your trucks stay dependable and your operations stay on schedule.

Service That Understands Your Business

The nice thing about being passionate about trucks is that we’re in tune with what fleet managers need: responsiveness, clarity, and repairs that don’t require redoing. We take the time to understand your operations and tailor our service around what matters to you, whether that’s fast turnarounds, flexible scheduling, or honest communication.

That’s because we don’t just work on trucks…we work with people. And we work hard to earn your trust every step of the way.

Ready to schedule service or talk about your fleet needs? Call us today at [919-](tel:(919) 659-5497)[659](tel:919 659-5497)[-5497](tel:(919) 659-5497).

Repair Services

Commercial Fleet Truck Repairs

Our team of ASE-certified technicians are expertly skilled to take on even the most challenging jobs. From aftertreatment systems to performance ECM tuning, from brakes to engine repair, if you need it running in top shape, we’ve got you covered. Diesel trucks are our specialty, and we’re equipped with the right team to get your truck back on the road fast.

919-659-5497

Axle Repair

Brake Repair

Coolant System Repair

Diagnostics & Electrical Repair

Driveline Repair

ECM Calibration

EGR & DPF Repair

Engine Repair

Exhaust System Repair

HVAC System Repair

Oil & Fluid

Suspension Repair

Transmission & Clutch Repair

Reviews

Customer Testimonials

"Triangle Fleet always makes every experience 10/10. Mike, Kali & Jordan make everything so easy and pleasant. I will always recommend this place to anyone that needs diesel service."
- Courtney

Leave a Review

"Came in for my DOT inspection appointment on my trailer at 8AM & everything went so smoothly .. Thanks to Kali & Jordan for their professionalism at the front desk… Also to Wes who took his time on my inspection & his professionalism as well… See you great people on the next run, Thanks again!!!"

Wayne

"Mike was an excellent tech. The dot inspection was less than 1 hr. Late in the afternoon and the inspection was able to be completed. Customer service was top notch. Would definitely bring my rig back for another annual inspection."

Wesley

"This service was exceptional! Above and Beyond! Mike the mechanic shook my hand and explain what he did to service my Freightliner M2! Nick and Rob in the office were great as well! They answer any questions I had and got me back on the road in about 2-3 hours. They are professional and pride themselves on fixing the problem. I definitely recommend any one in the trucking industry to TFS!"

Artful D

"Kali, Jordan, Wade, & Nick did an excellent job scheduling my appointment, communicating with me up until the appointment date to make sure I’m able to make the appointment and kept me informed throughout the process of getting my vehicle serviced in a timely manner. Great customer service, great speedy mechanic services!!!!!"

"I Have interacted with several different employees of this company. Everyone has been wonderful. The mechanics really know this industry well and are great technicians. I have had Mike out twice, and he has diagnosed, repaired, And consulted with me every step of the way."

Danielle

"I called and the same day they made an appointment and had my truck (dodge ram 250) in and out so fast I am still dizzy. Everyone was awesome specially Mike. He asked us what we needed and took care of us from beginning to end. They have a customer for as long their around."

Edgar