Diesel Repair
Expert Diesel Repair for Trucks, Fleets & RVs
From diagnostics to complete rebuilds, we deliver quality diesel repair services with fast turnaround times and transparent communication.
Expert Diesel Repair Without the Pricey Guesswork.
Diesel engines are complex, powerful, and expensive to operate. When something goes wrong, you need accurate diagnostics and quality repairs—not guesswork and unnecessary replacements.
OKC Fleet Services specializes in diesel repair for commercial trucks, fleet vehicles, and diesel-powered RVs. Our experienced technicians use advanced diagnostic equipment to identify issues quickly and perform repairs that last.
OKC Fleet Services specializes in diesel repair for commercial trucks, fleet vehicles, and diesel-powered RVs. Our experienced technicians use advanced diagnostic equipment to identify issues quickly and perform repairs that last.
Our Diesel Repair Services
We provide expert diesel care, covering everything from advanced computer diagnostics and fuel system repair to complete engine rebuilds. Our technicians specialize in turbochargers, transmissions, and complex aftertreatment (DPF/SCR) systems to restore your power and efficiency with zero guesswork.
Diesel Engine Diagnostics
Advanced diagnostic tools for all diesel makes and models. We identify the root cause quickly so you get accurate estimates and no surprises.
Engine Repair
From fuel system issues to cooling system problems, we handle all diesel engine repairs with precision and quality parts.
Engine Rebuilds
In-frame engine overhauls available for medium and heavy-duty diesel engines.
Engine Replacements
We provide complete engine replacement solutions. We help you evaluate repair vs. replacement, source the right engine, and install it correctly to get your vehicle back in service as quickly and efficiently as possible.
Fuel System Service
Fuel injector testing, replacement, and calibration. High-pressure fuel pump repair. Complete fuel system diagnostics and repair.
Turbocharger Service
Turbo diagnostics, repair, and replacement. We restore power and efficiency to your diesel engine.
Cooling System Repair
Radiator repair and replacement, water pump service, thermostat replacement, and complete cooling system diagnostics.
Aftertreatment Systems
DPF (Diesel Particulate Filter) cleaning and replacement, DOC (Diesel Oxidation Catalyst) service, SCR (Selective Catalytic Reduction) repair, DEF system diagnostics and repair.
Electrical & Computer Diagnostics
Modern diesel engines rely on complex computer systems. We diagnose and repair electrical issues, sensor failures, and computer system problems.
Transmission Services
Transmission diagnostics, repair, and complete replacement services for manual and automatic transmissions.
Brake System Repair
Air brake service and repair, hydraulic brake systems, brake inspections, and complete brake system overhauls.
Makes We Service
We service all major diesel truck, fleet, and RV chassis manufacturers, including:
And More..
The OKC
Fleet Services Process
Fast Diagnostics
Drop off your vehicle or call for service. We complete diagnostics within one business day using advanced diagnostic equipment.
Clear Estimates
We provide detailed estimates within the following half business day of completing diagnostics. You’ll know exactly what needs repair and what it will cost.
Quality Repairs
Once approved, our experienced technicians perform repairs using quality parts and proper procedures. No shortcuts.
Daily Updates
We provide daily status updates so you always know where your repair stands.
Final Inspection
Before delivery, every vehicle undergoes a final quality inspection to ensure the repair meets our standards.
Why Choose
OKC Fleet Services?
OKC Fleet Services provides expert diesel repairs using advanced diagnostics and quality parts to ensure your fleet stays on the road. Our commitment to transparent communication and fast turnaround times minimizes your downtime without ever sacrificing craftsmanship.
Experienced Technicians
Our team has the training and experience to handle complex diesel repairs on all makes and models.
Advanced Equipment
We invest in the latest diagnostic tools and equipment to provide accurate diagnostics and quality repairs.
Quality Parts
We use OEM or quality aftermarket parts—never cheap alternatives that fail prematurely.
Transparent Communication
No surprises. We call before performing any work beyond your approved estimate.
Fast Turnaround
We understand downtime costs money. We work efficiently without sacrificing quality.
Service Area
We serve diesel truck owners, fleet operators, and RV owners throughout the
Oklahoma City metro area, including
Oklahoma City metro area, including
Oklahoma City
Edmond
Guthrie
Moore
Norman
Yukon
El Reno
Midwest City
Del City
Bethany
Warr Acres
Choctaw
Newcastle
and nearby communities
4.9 out of 5 Stars on Google
Don’t just take our word for it — hear from fleet managers who trust us daily.
Best of OKC
2024, 2025 & 2026 Award Winner
NAPA Certified
Truck Care Center
Get Your Diesel
Truck Back on the Road
Fast diagnostics. Quality repairs. Transparent pricing.