Chevy Duramax Repair & Diesel Maintenance at Jefferson Auto Service
If you’re looking for expert Dodge Cummins service in Harrison Township, Clinton Township, or Romeo, Jefferson Auto Service is your go-to shop for diesel power. Whether you’re towing, hauling, or just love the torque, your Cummins engine deserves a team that knows how to keep it running clean and strong. Our ASE-Certified techs specialize in domestic diesel repair—with a sharp focus on Dodge RAM 2500s, 3500s, and the legendary 6.7L Cummins turbo diesel.
Diesel Performance Backed by Experience and Precision
Chevy Duramax engines are built to deliver torque, power, and long-haul reliability—but like any diesel, they demand specialized service. At Jefferson Auto Service, our ASE-Certified techs have hands-on experience with all generations of Duramax engines, including the LBZ, LMM, LML, and L5P. We don’t just work on them—we understand how they wear, what to look for, and how to spot small issues before they become big ones.
From fuel system diagnostics to EGR and turbo repairs, we’ve got the gear and the skill to handle your truck’s needs. We offer full Digital Vehicle Inspections (DVIs) on every visit, so you’ll see exactly what’s going on—photos, videos, and a clear game plan to help you decide the next move. No pressure, just real solutions tailored to your truck’s workload.
Why Duramax Owners Choose Jefferson Auto Service
Our clients aren’t just diesel drivers—they’re ranchers, contractors, fleet managers, and everyday people who depend on their trucks to do real work. That’s why we focus on the kind of service that builds trust, not just invoices. Whether you’re getting your truck road-ready for the season or need fast turnaround on a breakdown, we’re here to help with clarity and care. Proof we’re doing something right:
“I’ve been bringing my vehicle to Jefferson Motor Service since I moved to Harrison Township. Every time I’ve brought it in, they’ve done an excellent job. Their prices are a touch high, but they prove it’s worth it by taking their time and going over every detail. They also teach you about the repair. I got a loaner for the weekend when my vehicle couldn’t be done by Friday. Their shuttle service is a bonus too!"
-Jaime P.
Our culture is built on mutual respect—from our techs in the bays to our front-of-house staff that customers constantly rave about. We’re constantly growing, constantly training, and constantly raising the bar. At all three locations—Harrison Township, Clinton Township, and Romeo—you’ll get the same transparent, top-tier experience. Because that’s just how we do business.
Book Chevy Duramax Service in Harrison Township, Clinton Township, or Romeo
Whether you’re based in Mt. Clemens, Ray Township, St. Clair, or right here in Harrison or Romeo—Jefferson Auto Service is your trusted partner for Chevy Duramax repair. Schedule your service today and let us keep your truck running at full strength with diesel repairs done right, every time.
