Certified Diesel Engine Repair in Monroe County in
Columbia, IL
Duramax • Powerstroke • Cummins • Jeep EcoDiesel
Expert diagnostics and repair by ASE-Certified Diesel Technicians
WHY BERNHARD AUTO WORKS
Not Every Shop Is Qualified to Work on Diesel — We Are.
At Bernhard Auto Works, diesel engines aren’t an afterthought. Our shop is trusted by truck owners, Jeep drivers, and business fleets because we invest in the training, tools, and certifications required to diagnose and repair diesel engines properly.
What Sets Us Apart
✔ ASE-Certified Diesel Technicians
✔ Expertise in Duramax, Powerstroke, Cummins & Jeep EcoDiesel
✔ Advanced diesel diagnostics (not guesswork)
✔ Honest recommendations and clear communication
✔ Local, trusted shop serving Monroe County
DIESEL SERVICES WE OFFER
- Comprehensive Diesel Diagnostics & Repair
- Check Engine Light Diagnostics
- Loss of Power, Rough Running, or Hard Starts
- Fuel System and Injector Issues
- Turbocharger & Emissions System Diagnostics
- Cooling and Overheating Problems
- Engine Performance and Drivability Concerns
- Light-Duty & Commercial Diesel
- Jeep Eco Diesel Service & Repair
- Work Trucks and Commercial Vehicles
- Fleet Diesel Maintenance and Repairs
TRUST SIGNALS
Certified. Experienced. Local.
Our diesel technicians are ASE-certified and trained to service today’s complex diesel engines. Whether it’s a personal truck, a Jeep EcoDiesel, or your business fleet, you can trust that your vehicle is in capable hands.
“We don’t guess—we diagnose. That’s how diesel should be serviced.”
COMMON DIESEL PROBLEMS WE FIX
Is your diesel experiencing any of these?
✔ Check engine light on
✔ Hard starts or no start
✔ Loss of power or poor fuel economy
✔ Excessive smoke
✔ Engine running rough or stalling
Don’t ignore diesel warning signs. Small issues can quickly turn into major repairs if not properly diagnosed.
Certified. Experienced. Local.
LOCAL SERVICE YOU CAN COUNT ON
Proudly Serving Monroe County & Surrounding Areas
Based in Columbia, IL, Bernhard Auto Works provides trusted diesel service to drivers from:
Waterloo • Red Bud • Millstadt • Valmeyer • and nearby communities.
Get Certified Diesel Service You Can Trust
Whether you’re dealing with a warning light or a performance issue, our team is ready to help.
👉 Call Now to Speak with a Diesel Specialist
Contact Us
Not Ready to Book Yet?
Schedule a diagnostic or speak with our team about your diesel issue today.
Whether you’re dealing with a warning light or a performance issue, our team is ready to help.
Popular Automotive Services
Reliable Car Maintenance and Repairs in columbia, il
At Bernhard Auto Works, we take pride in offering a variety of professional services to keep your vehicle running smoothly. From essential maintenance to complex repairs, our ASE-certified technicians are committed to delivering reliable, efficient service with every visit. Below are some of the most common services we provide to ensure your vehicle stays in optimal condition:
Engine Diagnostic and Repair
Expert engine diagnostics and repairs to keep your vehicle running at peak performance. We’ll identify and fix any issues quickly to get you back on the road.
Brake
Repair
Ensure your safety with our comprehensive brake repair services, including inspections, rotor replacements, and brake pad repairs for optimal stopping power.
Cooling System
Repair
Prevent overheating with our cooling system repairs, including radiator replacements, coolant flushes, and pressure tests, ensuring your engine runs cool and efficiently.
Steering and
Suspension
Restore smooth handling and comfort with our steering and suspension services, including shock, strut, and ball joint replacements, for a safer, more controlled ride.
ABOUT OUR LOCATION
OUR MECHANICS PROVIDE QUALITY AUTO REPAIR SERVICES IN Columbia, IL
Bernhard Auto Works is centrally located at 250 Columbia Town Center in Columbia, IL, providing convenient access for drivers in and around the area. Our modern facility is equipped to handle everything from routine maintenance to complex repairs, offering the latest technology and a comfortable waiting area with free Wi-Fi. Our team is dedicated to making your visit seamless, with services like vehicle pickup and delivery, loaner cars, and a customer shuttle to ensure you can continue your day while we take care of your vehicle.
We proudly serve a wide range of surrounding communities, offering reliable automotive care to drivers across the region. Whether you’re stopping by for a quick oil change or more extensive repairs, our expert technicians are ready to assist you. Bernhard Auto Works services customers in the following areas:
- Columbia
- Dupo
- Millstadt
- Waterloo
- Valmeyer
- Red Bud
- Hecker
- Freeburg
- Smithton
- Belleville
- East Carondelet
- Cahokia Heights
- Fairview Heights
- O’Fallon
- Shiloh
- Mascoutah
