Diesel Parts
Repairs
Brakes
Fluids
Batteries
Oil Changes
From Simple Service to Deep Rebuilds: Southern Utah’s Trusted Choice for Diesel Repair | Cedar City, UT
Welcome to Smith Diesel Performance
We are Southern Utah’s premier diesel performance shop. Whether your oil-guzzling jalopy needs a lot of love, or if your shining “beast” needs more growl beneath the hood, we’re your best choice for the upgrade. Founded in 2005, Smith Diesel Performance and Repair has grown year after year because of one simple business model: “Provide quality work at a fair price.” When you do that word gets around fast and there is no better advertising than word of mouth.
Innovative tools. Clear-cut problem solving.
We also take pride in having the right tools and equipment to tackle any job that comes along on diesel truck pickups. It is a significant investment to have dealer/OEM scan tools for all three makes of truck (Ford VCM, Dodge DRBII & Starmobile, GM Tech II) but one we consider a must in today’s world of computer controlled vehicle systems.
Diesel knowledge is power. Get the right repair the first time.
We are Cedar City’s only Bosch authorized diesel service center which means our techs get factory training on fuel systems of all makes of light to medium-duty trucks. This gives us the knowledge and support to diagnose and repair your pickup right the first time. If you want someone to throw parts at your truck for a fix, look elsewhere. We properly diagnose, then perform the correct repair, no guessing no runaround. That’s our guarantee to you.
Visit Southern Utah’s premier shop for diesel truck repair.
We look forward to serving your diesel repair needs, so come on down to Southern Utah’s premier diesel performance shop, and let us take care of you. We’re conveniently located off interstate 15 in the heart of Cedar City UT.
Contact our auto repair shop by calling (435) 865-0055 or through our website form. We’re ready to get your diesel vehicle back on the highway where it belongs.
Full-Service diesel repair for every vehicle need
When your diesel workhorse needs a little TLC or something’s gone seriously wrong, Smith Diesel Performance can handle any truck repair job your diesel might need. Routine maintenance, deep diagnostics, strange noises under the hood, or warning lights are no match for the expertise we bring to the shop table. Our team will figure it out.
We specialize in keeping domestic diesel pickups running strong. When something is broken or just doesn’t feel right, our technicians dig into the problem with advanced diagnostics. We are not the guys who pass off hard jobs down the street. You’ll get an accurate solution and a skilled fix all in one place.
Our services include:
- Brake service and repair
- Transmission repair and maintenance
- Steering and suspension repair
- Cooling system services
- Fuel system inspection and repair
- Electrical and sensor diagnostics
- Oil, filter, and routine maintenance
- Tire services: we rotate tires, mount, and balance them
Your diesel truck may be your daily driver or your work truck. Either way, its dependable performance matters. Our shop is committed to doing the job right the first time, and that’s exactly why customers keep coming back to a diesel repair shop like Smith Diesel Performance and Repair—one that they can actually trust.
Expert diesel engine services for Power Stroke, Duramax & Cummins
When it comes to serious diesel engine problems, you want local diesel truck experts who know these engines inside and out. Our Smith Diesel Performance team has decades of experience working on the most common domestic diesel platforms.
We provide complete diesel engine services including:
- Complete diesel engine diagnostic services
- Injector and fuel systems repair
- Turbocharger repair
- Diesel engine rebuilds
- Diesel engine replacement
- Performance upgrade options
Our technicians regularly work on:
- Ford Power Stroke
- GM Duramax
- Dodge Cummins
These engines are powerful, but when something goes wrong the repair needed can be complicated. That’s where our knowledge, combined with the right equipment, make all the difference.
Instead of throwing parts at a diesel engine, we diagnose the issue first. That way the repair needed is handled correctly and your diesel truck is back on the road doing what it was built to do.
Diesel truck parts, tires, and performance upgrade options
A good diesel repair shop doesn’t just fix problems. Sometimes it’s about making your truck run stronger, pull harder, or last longer. Southern Utah diesel truck owners come from miles away to Smith Diesel Performance, not only for repair work, but for the quality aftermarket jobs we take on.
Do you have a lift or leveling kit that needs installation? Need a turbocharger or fuel system upgrade? Our experts can handle it and more, including installing programmers, tuners, cold air intakes, heavy duty lighting, or transmission upgrades.
Whatever the need, we install high-quality diesel truck parts designed to improve horsepower, torque, and efficiency. We also install brand tires built for heavy truck use. Whether you need mounting, balancing, or your tires rotated, our shop has you covered.
If we wouldn’t run it on our own truck, we won’t recommend it for yours. That’s just how we do business.
Local diesel truck experts serving Cedar City and Southern Utah
Our shop may be located in Cedar City UT, but drivers come from all over Southern Utah when their diesel truck needs professional repair.
Customers regularly visit from:
- Cedar City
- Enoch
- Parowan
- Paragonah
- Kanarraville
- Beaver
- Wheatgrass
- St. George
- Other surrounding communities within a 100-mile radius
Why make the trip? Because they want a go-to diesel repair shop that knows diesel pickups. Period.
For top-level diesel engine services, trust our SDP team. We are committed to doing the kind of work that keeps customers coming back. Also, most services we offer are covered by a 1-year labor warranty for added peace of mind. When you bring your diesel truck to Smith Diesel Performance, you’re working with a reliable team who genuinely loves what they do.
Visit Smith Diesel Performance – Cedar City UT
If your diesel truck needs complete engine diagnostic services, professional diesel repair, or performance services, come see the crew at Smith Diesel Performance. Our shop is conveniently located in Cedar City UT just off I-15, making it easy to find us whether you’re coming from across Cedar City or elsewhere in Southern Utah.
From routine repair to serious diesel engine repair, we’re proud to be the one-stop shop diesel owners rely on. Give us a call, contact us via our site form, or visit the shop and see why so many local drivers trust Smith Diesel Performance for their diesel truck repairs.
Brands We Service
Smith Diesel Performance FAQ
What types of diesel trucks do you repair at Smith Diesel Performance?
We specialize in domestic diesel pickup trucks, including Ford Power Stroke, GM Duramax, and Dodge Cummins engines. Our focus is on fixing diesel engines, fuel systems, and performance components you typically find in light to medium-duty pickups.
Do you provide routine maintenance for diesel trucks?
Absolutely. We provide oil changes, filter replacements, inspections, and other maintenance services designed specifically for diesel engines. We can also help you stay on top of your vehicle’s factory-recommended maintenance schedule.
Do you do wheel alignments?
No, we do not handle wheel alignment services. We do handle tire rotations, balancing, and repair services, as well as new tire replacement options.
Do you offer financing for diesel repairs?
Our shop offers financing options through EasyPay. Get more details here.
Where is Smith Diesel Performance located?
Smith Diesel Performance is conveniently located at 2048 N Main St, Cedar City, UT 84721. For detailed directions, visit our shop locator.
What are common diesel engine problems?
Some of the most common diesel engine problems we take care of include injector failure, turbocharger issues, fuel system contamination, overheating, and sensor failures.
How often should a diesel truck be serviced?
Most diesel trucks should get routine maintenance every 5,000–10,000 miles depending on the vehicle, driving conditions, and manufacturer recommendations. Regular service helps extend the life of the diesel engine and lowers costly repair risks.
Why choose a diesel specialist instead of a general mechanic?
Diesel engines operate differently from gasoline engines and require specialized knowledge, diagnostic equipment, and training. Choosing local diesel truck experts ensures your truck is diagnosed and repaired the right way by mechanics who work with diesel systems every day.
Visit Smith Diesel Performance & Repair
2048 N Main St
Cedar City, UT 84721
📞 Phone: (435) 865-0055
✉️ Email: sales@smithdieselperformance.com
🕒 Hours:
Monday – Friday: 8:00 AM – 5:30 PM
Saturday – Sunday: Closed








