
Diesel Truck, Trailer, Automotive, & Fleet Services in Buchanan, MI
Buchanan Diesel in Buchanan, MI delivers expert auto, truck, trailer, and fleet (both small business and corporate) repairs—with custom mods, mobile service, and a customer-first approach. We serve owner-operators and fleet managers with work done right the first time.

We Are Buchanan Diesel
Founded in 2022, Buchanan Diesel isn’t your average auto and truck repair shop. With a team boasting over 30 years of mechanic experience, our dream was to create a repair shop like no other- one with a unique approach to getting things right the first time. With a talent for repairs and an unmatched work ethic, Buchanan Diesel services a variety of vehicles, including automotive, light to medium-duty trucks, trailers, and semi-trailers for both corporate and small business fleets, owner-operators, and automotive enthusiasts alike.
Diesel Services in Buchanan, MI
At Buchanan Diesel, we provide comprehensive service solutions tailored to the unique demands of diesel-powered systems. We offer a full range of services including fuel system repair, injector replacement, and full engine diagnostics. Our advanced diagnostics tools allow us to accurately assess your engine’s health and performance.

Bus Repair

DOT Inspection
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General Diesel Truck Repair

Heavy Equipment Repair

On-Site Truck Repair

Preventive Maintenance

Wheel Hubs Repair

Wheel Seals Repair
Truck & Trailer Services in Buchanan, MI
Keeping your trucks and trailers operational is essential to keeping your business moving. At Buchanan Diesel, we offer dependable truck and trailer repair services throughout Buchanan, MI and the surrounding region. Whether you’re running light-duty pickups, box trucks, utility trailers, or semi-trailers, our experienced technicians are equipped with the knowledge and tools to handle a wide range of mechanical issues.
Light-Duty Truck Services in Buchanan, MI
At Buchanan Diesel, we know your car isn’t just a way to get from A to B—it’s a reflection of your style and personality. Our team works closely with you to understand your goals, your driving style, and your vehicle’s existing setup. From the first consultation to the final polish, we take pride in doing the job right the first time. If anything’s off, we’ll make it right—because your satisfaction means everything to us.
Fleet Services in Buchanan, MI
Your vehicles are essential to your daily operations, and when they’re out of commission, productivity takes a hit. At Buchanan Diesel, we understand that your fleet is the backbone of your operations, and any downtime can result in significant disruptions. That’s why we offer a wide range of fleet services tailored to the needs of small businesses. For corporate entities with semi-trailers and trailers, we’re your trusted partner for all your needs. Trust Buchanan Diesel to be your dedicated fleet service solution—offering the care, consistency, and convenience that small business owners need most.

Corporate Fleet Services
At Buchanan Diesel, we provide the complete fleet services package for corporations in southwest Michigan, with light and medium-duty trucks and trailers under their belts. With our on-site services and a focus on corporate fleet needs, we are dedicated to keeping your assets in peak condition.

Small Business Fleet Services
Owning a small business fleet can be challenging—dealing with downtime, managing drivers, and lowering costs is stressful. That's where we come in. At Buchanan Diesel, we provide personalized and cost-efficient fleet services for small business fleet managers in southwest Michigan.
Customer Testimonials Buchanan Diesel
"Absolutely wonderful service. They knew exactly what was wrong with my truck. Quick turn around. Highly recommend. Very nice people."
- Alex
Contact us To Schedule Service
Have questions or want to schedule your vehicle in for a repair or service? Get in touch, we're open Monday through Friday from 8:30AM to 5:00PM.
Serving Southwest Michigan & Michiana, including Buchanan, Niles, St. Joseph, Benton Harbor, & Dowagiac, MI, & South Bend, Elkhart, IN & surrounding areas.