Quality Repairs & Service Guaranteed

Diesel Repair Solutions That Work as Hard as You Do

If your truck is your livelihood, downtime isn’t an option. We help customers with:

• Breakdowns on the highway or in the yard

• Failed DOT inspections or emissions problems

• DPF regen issues or aftertreatment faults

• Poor performance, low boost, or smoking engines

• Preventive maintenance to keep trucks road-ready

• Keeping fleet costs under control with proactive service

Our Diesel Services

Engine Diagnostics
We use dealer-level software to identify engine problems quickly—no guesswork, just precise fault detection for Cummins, CAT, Detroit, and more.

24/7 Mobile & Roadside Diesel Repair
Breakdown on the road? We’ll come to you fast with fully equipped service trucks ready to diagnose and repair on the spot—day or night.

Fleet Maintenance & DOT Prep
Custom PM programs, mobile service, and pre-inspection checks designed to reduce breakdowns and help your trucks pass DOT inspections every time.

DPF Cleaning & Emissions Repair
Thermal DPF cleaning, sensor replacement, regen diagnostics, and full aftertreatment repair to avoid shutdowns and fines.

Heavy-Duty Alignments
Hunter Engineering alignments for tractors and trailers improve tire life, reduce fuel use, and enhance safety and handling.

Transmission & Clutch Services
From slipping gears to full rebuilds, we service Eaton, Allison, and more. We fix drivetrain issues before they become major failures.

AC & HVAC Repair
Blowing warm air? Our AC service keeps drivers comfortable with recharge, blower motor, and compressor replacement.

Turbo & Fuel System Repair
Loss of power, black smoke, or hard starts? We restore your truck’s performance by repairing turbos, injectors, and fuel pumps.

Built for Columbia’s Hardest Working Drivers & Fleets

We serve:

• Local contractors and construction fleets

• Freight carriers and logistics companies

• Municipal and government vehicles

• Agricultural and field service trucks

• Independent owner-operators and OTR drivers

Why Road 1?

• Certified diesel techs with dealership-level knowledge

• Full-service facility with lifts, alignment rack, and in-stock parts

• On-site and roadside service — we go where your truck is

• Honest diagnostics, clear pricing, and no unnecessary repairs

• Trusted by hundreds of repeat customers across South Carolina

Hear From Our Customers

"Road 1 got to me at 1 a.m. off I-26 and diagnosed the problem faster than the dealership. They’re fast, honest, and reliable—can’t ask for better." – Owner-Operator, SC

"We run a fleet of 20 delivery trucks. Road 1 handles our PMs and repairs like clockwork. They’ve become our go-to team for all diesel issues." – Fleet Manager, Columbia

Request Service or Emergency Help

Whether you're broken down or need an inspection before a long haul:

Call (803) 794‑5155 or [Request Service Online]
Road 1 Inc – Columbia’s Most Trusted Diesel Repair Specialists

Where To Find Us!

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