Every repair.
One shop.
Semi truck and trailer repair in Oklahoma City — from roadside rescue on I-40 to full engine rebuilds in our secure shop. ASE Master Certified techs, 35+ years of wrenching, every job warrantied.
24/7 truck repair services in Oklahoma City
Diesel Truck Repair LLC handles comprehensive repair and maintenance for commercial trucks and trailers, plus around-the-clock roadside assistance across the OKC metro. With over 35 years in the Oklahoma City transportation industry, our ASE Master Technicians take on the hardest jobs with confidence — and our engine rebuilds have kept plenty of trucks out of the dealership's lot.
24/7 Emergency Roadside & Mobile Truck Repair
Broken down on I-40, I-35, I-44, or a service road? One call gets a fully equipped service truck and a certified tech moving toward you — typically on-site in 30–90 minutes, any hour, any day of the year.
- Mobile repairs on all major truck makes and engines
- Emergency and non-emergency roadside calls
- Trailer breakdowns and component replacement on-site
- If we miss your call, we call you right back
Heavy-Duty Truck Towing
When a repair can't happen on the shoulder, we'll get your rig off the road and into our secure 2½-acre facility. As members of the Oklahoma Wrecker Owners Association, we handle semi-truck and trailer towing throughout the OKC area — one call covers the tow and the repair.
- Semi-truck and trailer towing to our shop
- Secure, fenced storage while your truck is down
- Tow + diagnose + repair, coordinated by one dispatcher
Diesel Engine Repair & Rebuilding
Complete engine service for CAT, Cummins, and Detroit power — from chasing leaks and timing work to full in-frame and out-of-frame rebuilds. Our ASE Master techs use dealership diagnostic software to find the real problem, and our rebuilds have saved owner-operators the cost (and the wait) of the dealership.
- Engine rebuilds and remanufactured engine replacement
- Leak repair, timing belts, and manufacturer-interval services
- Quality parts from Eaton and Meritor
- Every rebuild backed by our warranty
Air Brake System Service & Repair
Brakes wear on their own schedule — driving conditions and braking habits decide it, not the calendar. We specialize in truck air brake systems and turn repairs fast, and every service includes a free brake inspection so small problems get caught before they park you.
- Full air brake system diagnosis and repair
- Shoes, drums, chambers, valves, and slack adjusters
- Free brake inspection with every service
Clutch Adjustment & Replacement
Stop-and-go miles eat clutches. When yours starts slipping or the pedal feel changes, bring it in before it strands you — we handle the full job, not just the disc.
- Pressure plate and clutch disc replacement
- Throw-out bearing replacement
- Flywheel resurfacing
- Worn hydraulic component replacement
Truck A/C Repair & Recharge
An Oklahoma summer in a cab with dead A/C isn't a comfort problem — it's a safety problem. We assess your system fast, repair or recharge it, and get you back on the road with cold air that lasts.
- Full A/C system diagnosis
- Compressor, condenser, and leak repair
- Refrigerant recharge
Federal DOT Inspections
Need a DOT inspection in Oklahoma City? We run comprehensive inspections that meet all federal regulatory standards, complete them quickly, and hand you the paperwork so you can roll with confidence — and without a compliance headache hanging over the next weigh station.
- Annual federal DOT inspections for trucks and trailers
- Repairs handled on the spot if something fails
- Fleet scheduling so trucks cycle through without downtime
DPF Filter Cleaning & Advanced Diagnostics
A clogged DPF costs you fuel, power, and eventually a derate on the side of the highway. Our shop cleans diesel particulate filters in-house and pairs it with dealership-grade diagnostics to catch regen and emissions problems before they force a shutdown.
- DPF filter cleaning
- Dealership diagnostic software on all major engines
- Emissions and regen system troubleshooting
Preventive Maintenance & Fleet Service
The cheapest repair is the one you scheduled. A real PM program predicts problems instead of reacting to them — we'll build a service schedule around your routes and downtime windows, and if something does need repair, we turn it fast. Ask about fleet service discounts.
- Custom PM schedules for single trucks or whole fleets
- Oil, filters, fluids, and manufacturer-interval services
- Fleet maintenance discounts available
Commercial Truck Tires
Blowout on the interstate or worn steers before a long haul — we handle commercial truck tires in the shop and on the roadside, so a tire never has to decide your schedule.
- New commercial truck tires, mounted and balanced
- Roadside tire changes and repairs
- Tire inspections with every PM service
Trailer Repair
A down trailer stops the load just as fast as a down tractor. We repair and replace malfunctioning trailer components in the shop or on the road — lights, brakes, doors, landing gear, air systems, and structural work.
- Trailer component repair and replacement
- Lighting, wiring, and air system repair
- Roadside trailer rescue on the OKC corridors
Truck repair questions, answered
How fast can a mobile diesel mechanic reach me in Oklahoma City?
Our service truck can typically have a certified technician on-site within 30–90 minutes anywhere in the OKC metro, including the I-40, I-35, and I-44 corridors. Dispatch answers 24/7 at 405-475-2735, and if we miss your call, we call you right back.
Do you repair semi trucks broken down on I-40?
Yes. Our shop sits directly on the West I-40 Service Road in Oklahoma City, and roadside rescue on the I-40 corridor is our specialty. We handle mobile repairs on the shoulder, and if the job needs a bay, we can tow your truck to our secure 2½-acre facility.
Do you offer heavy-duty towing?
Yes. We provide semi-truck and trailer towing throughout the Oklahoma City area and are members of the Oklahoma Wrecker Owners Association. One call covers the tow, the diagnosis, and the repair.
What diesel engine brands do you work on?
We specialize in CAT, Cummins, and Detroit engines and service all major truck makes, using dealership diagnostic software and quality parts from manufacturers like Eaton and Meritor.
Do you do DOT inspections in OKC?
Yes. We perform federal DOT inspections for trucks and trailers that meet all regulatory standards, and if anything fails, we can repair it in the same visit.
Are your repairs warrantied?
Every repair we do is backed by a warranty — engine rebuilds included. Guaranteed repairs and parts have been part of how this shop operates for over 35 years.
Do you offer truck repair financing?
Yes. If you're in a tough spot but need to get back on the road, we offer repair financing options. Call 405-475-2735 and ask, or visit truckrepaircredit.com.
Can I schedule preventive maintenance for my fleet?
Absolutely. We build custom PM schedules for fleets in the OKC metro, cycle trucks through with minimal downtime, and offer fleet service discounts. Use our appointment form or call to set up an account.
Call for service today
One call gets a certified tech moving toward you.
Call 405-475-2735