Our Commitment
Who We Are
Union Tec Truck & Trailer Repair – Trusted Diesel Experts in Charlotte, Monroe & Fort Mill
At Union Tec, we specialize in high-quality diesel repair, fleet maintenance, and 24/7 roadside services for commercial trucks and trailers. Backed by over 30 years of hands-on experience, our certified diesel mechanics deliver fast, accurate diagnostics and reliable repairs that keep your fleet moving.
We’re more than just a repair shop—we’re building the future of the diesel industry through our Diesel Mechanic Internship Program, offering real-world training to tomorrow’s top technicians.
From DOT inspections and engine rebuilds to trailer body work and electrical systems, Union Tec provides unmatched service, professionalism, and convenience for fleet accounts and owner-operators alike.
Schedule your service online or call us today to experience the Union Tec difference.
Our Services
Truck & Trailer Repair
Roadside Repair Assistance
Full PM Service / Oil Change Service
Diesel Engine Repair & Rebuild Services
DPF Repairs
EGR & DPF Services
Allison & Eaton Transmission Repair
Diesel Computer Diagnostics
DOT Inspections
Fleet Repair Services
Mobile Diesel Repair
Why Choose Union Tec?
Union Tec is the trusted choice for commercial truck and trailer repair in Charlotte, Monroe, and Fort Mill. With over 30 years of diesel expertise, certified mechanics, and 24/7 roadside support, we deliver fast, reliable, and DOT-compliant repairs that keep your fleet on the road. Our commitment to quality, transparency, and customer service makes us the go-to diesel repair partner for fleets and owner-operators across the region.
Services
From 75 US dollars
225 US dollars
125 US dollars
200 US dollars
150 US dollars
