Diesel Performance and Repair Shop in Jefferson, GA

Whether you are hauling livestock down US-129, towing equipment through Jackson County, or chasing more power on the open highway, Southern Built Auto Works is Jefferson, GA premier diesel performance and repair shop. Our ASE-trained technicians specialize in Duramax, PowerStroke, and Cummins — built for the trucks that define Northeast Georgia.

Trusted Diesel Technicians in Jefferson, Georgia

At Southern Built Auto Works, we understand that your diesel truck is more than a vehicle — it is your livelihood, your build, and your identity. Jefferson and surrounding Jackson County is home to hard-working drivers and serious enthusiasts who demand a shop that can keep up. From routine fluid to Duramax Diesel Repair and high-pressure fuel pump inspections, our team has the equipment and expertise to handle every job right the first time. We are located off Jefferson Highway — just minutes from I-85 and GA-53 — making us the go-to diesel shop for Northeast Georgia.

Diesel Trucks We Work On

Services

We specialize exclusively in diesel trucks — Duramax, PowerStroke, and Cummins — giving Jefferson area drivers a level of focused expertise and platform-specific knowledge that general repair shops simply cannot match.

Duramax Services in Jefferson, GA

General Service & Fluid Changes
Performance Modifications
Turbo Replacements
Glow Plug Inspection/Replacement
EGR System Cleaning
DPF Regeneration or Cleaning

PowerStroke Services in Jefferson, GA

General Service & Fluid Changes
Performance Modifications
Turbo Replacements
Glow Plug Inspection/Replacement
DPF Regeneration or Cleaning
EGR System Cleaning
High-Pressure Fuel Pump (HPFP) Inspection

Cummins Services in Jefferson, GA

General Service & Fluid Changes
Performance Modifications
Turbo Replacements
Grid Heater Checks
DPF Regeneration or Cleaning
EGR System Cleaning

About Us

Southern Built Auto Works was founded with a single purpose: to give diesel truck owners in Jefferson and across Jackson County a shop they can actually trust. We got tired of seeing diesel builds misdiagnosed and diesel owners upsold on unnecessary repairs by shops that treat a Duramax like any other engine. Our team specializes exclusively in diesel performance and repair — which means deeper knowledge, better diagnostics, and results that hold up under real-world conditions on GA-82 and beyond.

From our location on Jefferson Highway, we serve the entire Northeast Georgia corridor — Jefferson, Commerce, Athens, Gainesville, and everywhere in between. Whether you are looking for PowerStroke diagnostics and performance work on your daily driver or a full build on a show truck, we bring the same dedication to every vehicle that rolls through our doors. Southern Built Auto Works is not just a repair shop — it is a shop built by diesel guys, for diesel guys.

What Our Clients Are Saying

Tyler P.

2 years ago

Been coming here for years always takes great care of me and my trucks.very professional and always does his work in a timely manner. Wouldn’t trust anyone else other than here

Carlos L.

2 years ago

I took my truck in with a bad upper oil pan leak and an injector needing to get fixed, Luke did an excellent job on resealing everything that could possibly give me problems in the future . Resealed all 8 of my injectors while he was at it and upper oil pan resealed etc, Great customer service Luke would give me a call to give me a heads up on parts being delayed due to holidays or any possible problems, my truck has been running great ever since . If I ever run into any problems with my truck again I know I can confidently give Luke a call and he’ll fix up the truck in no time, very happy with the outcome of how everything came out with my truck being resealed and ready to put to work! Great prices and great quality work . I definitely recommend his shop to anyone who is having trouble with there truck Thank you Luke for the good work and getting my truck back on the road as soon as possible.

Jessica B.

2 years ago

Luke is extremely thorough and is a great business owner. He takes pride in what he does. I definitely would recommend him!

Mack P.

2 years ago

Great place for any of your Diesel truck repairs. Everything from the customer service to the work is just flawless. I highly recommend checking these guys out at Sothern Built Auto works!

Logan Green O.

2 years ago

Great shop to deal with. Hooked me up on getting my L5p Duramax back up and going again after injector issues. Great customer service, great turnaround time, and professional communication. Will definitely be using them from now on in the future.

Brenden

2 years ago

Mr.Luke did a great job installing a Fass Fuel system in my dads truck the night before Father’s Day to surprise him. I recommend Southern Built Auto Works to anybody looking for a great shop that does good work for a reasonable price.

Robby S.

2 years ago

This was a great experience. Nothing really but compliments for this shop. I knew it was going to take a little longer because the amount of customers who had come in before me but I was glad Luke was upfront and honest about it. The typical high pressure pump went out and I elected to use upgraded parts which took a like longer than normal but in our society it wasn’t bad. Truck is back up and running good. I feel confident that if I have an issue with my truck I can call Luke anytime and he’s going to help me all he can. Lots of other shops are out there but as long as I own this diesel These guys will be my go too! Thanks Luke and Hunter for all your hard work to get me going again.

Diesel Performance and Repair Shop in Jefferson, GA

Trusted Diesel Technicians in Jefferson, Georgia

Duramax Services in Jefferson, GA

PowerStroke Services in Jefferson, GA

Cummins Services in Jefferson, GA

About Us

What Our Clients Are Saying

Other Areas We Serve