Georgia Duramax Repair, Parts, & Service

Fair Pricing

Comprehensive Diagnostics

Expert Techs

Service

Repairs

Performance Parts

Comprehensive Diagnostics

We Know Duramaxs

As Jefferson’s trusted Duramax diesel experts, we’ve built a reputation for handling everything from routine maintenance to full-blown performance builds.

With years of hands-on experience across all Duramax generations—LB7 to L5P—there’s no issue we haven’t diagnosed, repaired, or upgraded.

Whether you’re local to Jefferson, Braselton, or the greater Northeast Georgia area, you can count on us to keep your Duramax running strong and built to last.

get a quote for your Duramax

Give us a call or fill out our contact form regarding your Duramax truck and a member of our team will get back to you as soon as possible!

Services

From basic maintenance to aftermarket performance parts – we know how to get the best out of your Duramax. Here are some of the most common things we do for customer trucks.

Basic Service

Repair

Performance

Turbo Upgrades (VGT & Non-VGT Options)
Intercooler & Piping Upgrades
Lift Pump Installations (FASS & AirDog Systems)
CP3 Conversion Kits (for LML trucks)
Upgraded Injectors & High-Flow Fuel Lines
Head Stud Installations (ARP)
And More!

What Our Clients Are Saying

Tyler P.

01:37 24 Mar 25

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.

05:23 21 Feb 25

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.

03:27 20 Feb 25

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

Mack P.

01:21 25 Oct 24

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.

13:15 18 Sep 24

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

03:21 11 Sep 24

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.

12:46 08 Aug 24

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.