About Us

Fair Pricing

Comprehensive Diagnostics

Expert Techs

Service

Repairs

Performance Parts

Comprehensive Diagnostics

About Us

At our diesel truck shop in Jefferson, Georgia, more than just diesel mechanics—we’re true diesel enthusiasts who live and breathe Cummins, Power Stroke, and Duramax power.

Founded by truck guys for truck guys, our mission is simple: deliver top-tier diesel repair, maintenance, and performance work with the kind of precision and pride that only fellow gearheads understand.

From daily-driven workhorses to fully built weekend warriors, we treat every truck like it’s our own. Our team is known for exceptional craftsmanship, razor-sharp attention to detail, and honest, no-BS pricing. We don’t upsell—we educate, so you always know exactly what your truck needs and why.

Whether you’re looking for bulletproof reliability or chasing horsepower goals, we’re Jefferson’s go-to shop for diesel performance and repair that’s done right the first time.

Our Team

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Luke

John Smith

What Our Clients Are Saying

Tyler P.

1 year 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.

1 year 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.

1 year 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.