Truck Source Diesel & Off-Road

San Antonio’s Premier Diesel Performance & Repair Facility

Expert diesel diagnostics, repairs, and performance upgrades, trusted locally and nationwide for over 20 years

Expert diesel diagnostics, repairs, and performance upgrades for daily drivers, work trucks, and full race builds, trusted locally and by customers across the country for over 20 years of proven, reliable results you can count on

Established. Proven. Trusted.

Your Go-To Diesel

& Off-Road Service

Shop Since 2005

Your Go-To Diesel & Off-Road Service Shop Since 2005

Front view of a black pickup truck parked in a garage, with a headlight illuminated

Truck Source Diesel & Off-Road started as a small, single-bay shop built on hard work and a passion for diesel performance. Today, we operate out of a 40,000+ square foot facility, serving customers across Texas and nationwide.

We don’t cut corners. We fix it right, build it right, and stand behind our work.

Our team combines real-world experience, advanced diagnostics, and a commitment to doing the job right. From everyday repairs to high-horsepower builds, we’ve built our reputation on results — not promises.

SEE WHAT SETS US APART
YOUR GO-TO DIESEL EXPERTS

Complete Diesel &

Off-Road Services

Complete Diesel & Off-Road Services

Whether you need diagnostics, routine maintenance, or a full performance build, our team has the experience and equipment to get it done right. We work on light-duty trucks, fleet vehicles, and off-road builds with a focus on reliability, performance, and long-term results.

Black gear with a wrench icon, representing settings or maintenance

Accurate diagnostics and dependable repairs for Power Stroke, Cummins, Duramax, and EcoDiesel platforms to keep your truck running strong and performing as it should.

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Black turbocharger icon with a white turbine wheel on a white background

Performance upgrades built around real-world results. Whether you're chasing reliable power, efficiency, or drivability, we build systems that work together to achieve your goals.

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Black checklist clipboard with a pencil icon

Routine maintenance and inspection services designed to prevent issues, extend engine life, and keep your truck reliable whether it’s daily driven, worked hard, or both.

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Black delivery truck icon on a white background

Dependable fleet service, repair, and outfitting built around uptime. We help keep work trucks reliable, reduce interruptions, and support the demands of daily operation.

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Black coil springs with circular rings at the bottom on a white background

Lift kits, suspension upgrades, steering repair, and four-wheel alignment services built for proper handling, tire wear, and performance both on-road and off-road.

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Black tire icon with a white wheel rim on a light background

Complete wheel and tire packages plus accessories for trucks, Jeeps, Broncos, and SUVs, all selected for function, fitment, performance, and overall appearance.

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Black analytics icon with bar chart and speedometer gauge

In-house dyno testing and custom tuning designed to maximize performance safely. We use real data to improve drivability, consistency, and overall results.

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Black welding helmet with a lit welding torch icon on white background

Custom builds and fabrication designed around your goals. From one-off parts to complete projects, we build setups that are purposeful, strong, and cleanly executed.

LEARN MORE
YOUR GO-TO DIESEL EXPERTS

Complete Diesel &

Off-Road Services

Complete Diesel & Off-Road Services

Whether you need diagnostics, routine maintenance, or a full performance build, our team has the experience and equipment to get it done right. We work on light-duty trucks, fleet vehicles, and off-road builds with a focus on reliability, performance, and long-term results.

Black gear with a white wrench icon inside on a white background

Accurate diagnostics and dependable repairs for Power Stroke, Cummins, Duramax, and EcoDiesel platforms to keep your truck running strong and performing as it should.

LEARN MORE
Black turbocharger icon with a white turbine wheel on a white background

Performance upgrades built around real-world results. Whether you're chasing reliable power, efficiency, or drivability, we build systems that work together to achieve your goals.

LEARN MORE
Black checklist clipboard with pen icon on a white background

Routine maintenance and inspection services designed to prevent issues, extend engine life, and keep your truck reliable whether it’s daily driven, worked hard, or both.

LEARN MORE
Black delivery truck icon on a white background

Dependable fleet service, repair, and outfitting built around uptime. We help keep work trucks reliable, reduce interruptions, and support the demands of daily operation.

LEARN MORE
Pair of black suspension springs with circular loops on a white background

Lift kits, suspension upgrades, steering repair, and four-wheel alignment services built for proper handling, tire wear, and performance both on-road and off-road.

LEARN MORE
Black tire or wheel icon with white spokes on a plain white background

Complete wheel and tire packages plus accessories for trucks, Jeeps, Broncos, and SUVs, all selected for function, fitment, performance, and overall appearance.

LEARN MORE
Black bar chart with an upward arrow and gauge icon, suggesting performance growth or analytics

In-house dyno testing and custom tuning designed to maximize performance safely. We use real data to improve drivability, consistency, and overall results.

LEARN MORE
Welding mask icon with a welding torch and sparks

Custom builds and fabrication designed around your goals. From one-off parts to complete projects, we build setups that are purposeful, strong, and cleanly executed.

LEARN MORE
OFFICIAL TSD MERCH

Truck Source Diesel

Gear & Merch

Truck Source Diesel Gear & Merch

Rep the brand with official Truck Source Diesel gear, including shirts, hats, and more. Additional products, accessories, and performance parts will be added as the store continues to grow.

Black T-shirt with TSD 20th anniversary graphic in white and orange on the back, featuring a truck and flames.

20th anniversary design featuring a custom back graphic and front chest logo. A nod to the history, built for those who’ve been part of it.

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Crazyhorse Trucker Hat - Black and tan mesh baseball cap with white “TSD” logo and “Crazyhorse” text on the side

Richardson 112 snapback with black front and Vegas gold mesh. Features TSD logo up front and Crazyhorse Racing detail on the side.

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Youth Logo Tee - Black T-shirt with yellow and white “TSD” logo and “San Antonio, TX” text on the back

Youth version of the classic TSD tee featuring a bold yellow logo on the front and full back print. Same clean look, sized for the next generation.

VIEW PRODUCT
OFFICIAL TSD MERCH

Truck Source Diesel

Gear & Merch

Truck Source Diesel Gear & Merch

Rep the brand with official Truck Source Diesel gear, including shirts, hats, and more. Additional products, accessories, and performance parts will be added as the store continues to grow.

Black T-shirt with TSD 20th anniversary graphic in white and orange on the back, featuring a truck and flames.

20th anniversary design featuring a custom back graphic and front chest logo. A nod to the history, built for those who’ve been part of it.

VIEW PRODUCT
Crazyhorse Trucker Hat - Black and tan mesh baseball cap with white “TSD” logo and “Crazyhorse” text on the side

Richardson 112 snapback with black front and Vegas gold mesh. Features TSD logo up front and Crazyhorse Racing detail on the side.

VIEW PRODUCT
Youth Logo Tee - Black T-shirt with yellow and white “TSD” logo and “San Antonio, TX” text on the back

Youth version of the classic TSD tee featuring a bold yellow logo on the front and full back print. Same clean look, sized for the next generation.

VIEW PRODUCT
Google Reviews

What Our Customers Say

We’ve built our reputation on honest work, real results, standing behind what we do, and long-term relationships. With hundreds of 5-star reviews, see what customers have to say about their experience with Truck Source Diesel & Off-Road.

Get in Touch

Let’s Build Something!

Tell us about your truck, what you’re looking to do, or any issues you’re experiencing. Whether it’s routine service or a full build, we’ll help you plan the right approach. Prefer to talk it through? Give us a call at (210) 654-6767

Tell us about your truck, what you’re looking to do, or any issues you’re experiencing. Whether it’s routine service or a full build, we’ll help you plan the right approach.


Prefer to talk it through? Give us a call at (210) 654-6767

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OUR Location

11122 Iota Dr, San Antonio, TX 78217

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Give Us a Call

Contact Us

Truck Source Diesel & Off-Road

Ready to Get Your

Truck Dialed In?

Ready to Get Your Truck Dialed In?

Whether you need diagnostics, maintenance, or a full performance build, our team is ready to get to work. We’ll take the time to understand your truck and goals so we can recommend the best approach and get it done right.

SCHEDULE SERVICE