Buchanan Diesel

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.

About Us

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.

Services

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.

Mechanic performing bus repairs in Southwest Michigan

Bus Repair

Ensuring safe and reliable transportation is crucial to your drivers, passengers, and business when maintaining your bus fleet. As a leading on-site service provider, Buchanan Diesel offers expert bus repair in southwest Michigan designed to keep your buses operating at their best.
Diesel mechanic performing DOT inspection on commercial truck in Southwest Michigan

DOT Inspection

Are you wondering if your truck is prepared to pass its upcoming DOT inspection? Here’s how we ensure the process is smooth, compliant, and efficient.
Mechanic performing general diesel repairs services on bus in Michigan

General Diesel Truck Repair

Buchanan Diesel is your trusted partner for diesel services in southwest Michigan. As a premier repair shop specializing in diesel vehicles alongside trailers, autos, buses, and heavy equipment, we offer a comprehensive range of services, from preventive maintenance to expert mobile truck repairs.
Diesel mechanic performing heavy equipment repair in Michiana

Heavy Equipment Repair

When heavy equipment encounters issues or malfunctions, operations can be halted. At Buchanan Diesel, we ensure your machinery operates smoothly with our dependable heavy equipment repair services in southwest Michigan.
On-site diesel mechanic performing onsite truck repairs in Southwest Michigan

On-Site Truck Repair

When your vehicle needs repairs, the last thing you want is the hassle of taking it to a shop and waiting in the lounge while it's being serviced. At Buchanan Diesel, we are dedicated to keeping you on the move.
Diesel mechanic performing preventive maintenance services for pickup truck in South Bend, Indiana

Preventive Maintenance

Our comprehensive preventive maintenance program is designed to maximize performance, minimize downtime, and extend the lifespan of your vehicles. With our expertise and commitment to excellence, Buchanan Diesel is your trusted partner for all your PM needs in Southwest Michigan.

Wheel Hubs Repair

Do you feel like one of the wheel hub assemblies in your truck is about to give out? With Buchanan’s Diesel, we’re adamant about making your life easier. Our wheel hub service is built around you, as we’ll come to your location whenever you call.
Mechanic working on wheel hub repair in Buchanan, Michigan

Wheel Seals Repair

Noticing grease leaking around your wheels or hearing unusual noises while driving? This page explains the importance of wheel seal repair, signs of failure, and why you should act quickly to keep your equipment running safely and smoothly.
Truck & Trailer 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 Services

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

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.

Semi trailer fleet in for maintenance in Southwest Michigan

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 vehicle in shop for maintenance in Southwest Michigan

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.

Testimonials

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

"Taken many of my vehicles there. Always fixed correctly and promptly. Wouldn’t hesitate to recommend. Eric and Rob are very trustworthy and terrific at keeping the customer informed on repairs."

Timothy

"I highly recommend Buchanan diesel. These guys helped me out when I was in a real bad situation, the price was reasonable, but the work was super quality. If I lived in that area, they would be my go to mechanics all the time highly recommended."

Phil

"They know their stuff and do great work and are very honest. I wouldn't take any of my vehicles - diesel or gas anywhere else."

Harvey

"Great people! They quickly repaired my fuel line so I could get back on the road."

Tyler

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.

  • Mon-Fri: 8:30am-5:00pm
  • Sat-Sun: Closed