Diesel Specialists
Diesel Engine Repair — Duramax, Cummins & Power Stroke
Diesels aren't just big gas engines, and they shouldn't be worked on like them. We know the Duramax, Cummins, and Power Stroke platforms — their strengths and their weak points.
Signs you may need diesel repair
A diesel rewards a shop that understands it and punishes one that doesn't. Fuel, air, emissions, and electronics all interact, and the same symptom — say, low power — can trace back to a sensor, a fuel-pressure problem, a turbo, or a clogged emissions system. We diagnose diesels the way they need to be diagnosed: methodically, with the data, until the real cause is confirmed.
The platforms we know
We have extensive experience with the three big platforms — GM Duramax, Dodge/Ram Cummins, and Ford Power Stroke — plus the GM vehicles a lot of them are built on. We know where each one tends to give trouble, which means faster diagnosis and a repair aimed at the actual weak point, not a guess.
Repair, protect, and improve
Beyond repair, we're an authorized FASS Fuel Systems and BD Diesel Performance dealer, so we can also improve fuel quality, reliability, and towing performance with proven hardware. Whether you need a breakdown fixed or a work truck made more dependable, we can help.
Diesel Repair — common questions
Which diesel engines do you work on?
We focus on the Duramax, Cummins, and Power Stroke platforms in pickups, plus commercial and fleet diesels. If you're not sure whether we cover your truck, call or text and ask — we'll tell you straight.
My diesel went into limp mode / derate — what now?
A derate is the truck protecting itself, often from an emissions, boost, or fuel-pressure fault. Don't keep hammering it. Get it scanned so we can find the trigger before it becomes a bigger repair. Call us and we'll talk through it.
Do you do diesel performance work too?
Yes — as an authorized FASS and BD Diesel dealer we install fuel systems, transmission and towing upgrades, and reliability hardware. We focus on dependable, sensible improvements for trucks that work.
Related services
While we have it in
From the shop
Worth a read
10 Signs Your Diesel Needs Attention Before It Strands You
Diesels usually warn you before they break. Here are the ten signs Athens-area truck owners should never drive past — and what each one is trying to tell you.
How a FASS Fuel System Extends the Life of Your Diesel
Your injectors and high-pressure pump are the most expensive parts on your diesel — and your fuel decides how long they live. Here's how a FASS system protects them.
Towing Heavy With a Diesel? Set It Up to Last
Towing is what diesels are built for — but heat and load are also what kill them. Here's how to set up and maintain a tow rig so it survives the work.
Athens, GA & Northeast Georgia
Need diesel repair? Let's get it fixed.
Call or text Appalachian Auto & Diesel and describe what's going on. Honest diagnosis, fair pricing, and repairs done right the first time.