Serving Santa Clarita, CA Since 2008

We Keep Your Business

On The Road

#1 Company for Diesel Repair & Fleet Services in Santa Clarita

About Our Shop

Truck Repair in the Santa Clarita Valley

Keeping Trucks on the Road, Where They Belong

At DEI Truck & Fleet, we keep trucks, diesels, and fleets moving with expert service, transparent pricing, and fast turnaround. Our team understands how critical your vehicles are to daily operations, so we work quickly without cutting corners. From preventive maintenance and tire services to complex engine, transmission, and aftertreatment repairs, our skilled technicians handle light, medium, and heavy-duty vehicles with the latest tools and a commitment to quality. Whether you run a single work truck, a family RV, or an entire fleet, you can count on us to keep you safely on the road.

Our Services

Keeping Every Vehicle Road-Ready

Expert Repairs. Reliable Maintenance. Lasting Performance.

At DEI Truck & Fleet, we provide complete repair and maintenance for trucks, RVs, and fleets of all sizes. From diesel engines and transmissions to suspension, tires, and commercial vehicle service, our technicians have the tools and training to handle it all. No matter the job, we deliver quality you can trust and results that keep you moving.

RV Service & Repair

From Small RVs to Big Diesel Pushers

Chassis and Generator Care You Can Count On

At DEI Truck & Fleet, we service RVs of every size—from compact Class B vans to heavy-duty diesel pushers. Our team focuses on the chassis and generator systems, handling everything from oil changes and cooling issues to suspension repairs, brakes, air leaks, and aftertreatment service. With photos of real RVs on our lifts and the right equipment for even the largest coaches, we deliver the expertise and reliability that RV owners across Santa Clarita trust to stay safe and road-ready.

Heavy-Duty Vehicle Service

Powerful Lifts for the Biggest Jobs

From RVs to Semis, We Can Handle It All

At DEI Truck & Fleet, no vehicle is too large for our facility. With state-of-the-art column lifts rated up to 74,000 pounds, we can safely raise and service everything from RVs and dump trucks to semis and heavy-duty work vehicles. Our equipment allows us to inspect, repair, and maintain the largest trucks with the same precision and care we bring to light and medium-duty vehicles.

Clean Truck Check

California’s New Emissions Compliance Program

Know the Rules. Meet the Deadlines. Stay Road-Ready.

California’s Clean Truck Check (HD I/M) program requires most diesel, hybrid, and alternative-fuel trucks and RVs over 14,000 lbs to pass regular emissions tests. Deadlines begin in 2025, and non-compliance can lead to registration holds or fines. At DEI Truck & Fleet, we help you prepare with inspections, repairs, and expert guidance—so your vehicles stay compliant and road-ready.

Light & Medium Duty Truck Services

Complete Care for Gas and Diesel Trucks

From Daily Drivers to Work Trucks, We’ve Got You Covered

DEI Truck & Fleet provides expert repair and maintenance for light and medium-duty trucks of every make and model. Our technicians handle both gas and diesel engines, delivering everything from routine oil changes and brake work to advanced diagnostics, suspension repairs, and transmission service. Whether you rely on a single pickup or manage a fleet of work trucks, we’ll keep your vehicles safe, efficient, and ready for the road.

At DEI Fleet & Truck, we are deeply committed to delivering automotive excellence to our valued customers. Our team has dedicated ASE-certified technicians who take pride in their workmanship and uphold the highest industry standards.

With a commitment to excellence, we ensure that every vehicle receives the highest level of care and attention it deserves. Our team has the skills and experience to keep your vehicle running smoothly and safely on the road.

As a JASPER® Installer, DEI Fleet & Truck harnesses the vast array of  resources provided by JASPER® to help you make well-informed decisions regarding replacing your vehicle's engine, transmission, differential, or fuel system.

JASPER® Engines extends a 3-year, 100,000-mile nationwide transferable warranty on their products. Specializing in remanufacturing engines, transmissions, diesel, differentials, and fuel systems, JASPER® has been in the US since 1942.

Customer Reviews

Real Stories. Reliable Service.

See Why Drivers Trust Us

Our customers say it best. From everyday maintenance to major engine replacements, drivers count on our shop for honest answers, quality workmanship, and dependable parts. We’re proud to pair our service with Jasper Engines & Transmissions—giving you results that last and a warranty to prove it.

Get in Touch

Simple Scheduling. Trusted Support.

We make it simple to connect with our team, whether you’re scheduling service, asking a question, or planning fleet maintenance. Use the Book Now button for quick online scheduling, fill out the contact form, or give us a call. Our shop is conveniently located in Santa Clarita, and you can find us easily on the map below.

Send Us a Message