Had a great experience with Stotty's Diesel. My sunroof was giving me issues and they got it fixed quickly and professionally. Super easy to work with, honest, and efficient. Definitely recommend them if you need quality work done!

Expert Auto repair in Ulm, MT
Stotty's Diesel serves Ulm, MT from Vaughn. Call or text to set up a time.
- Serving Vaughn Area
- Honest Work
- Diesel Specialist
/WHAT WE DO
DIESEL AND TRUCK REPAIR
From sunroof fixes to engine rebuilds, we handle the work and explain it straight.
Find Us From Ulm
/REVIEWS
WHAT OUR CUSTOMERS SAY
He's fixed my trailer, my truck, and my other truck. Everyone else in the area just isn't as good.
Stotty's Diesel is amazing Cameron the owner is very helpful and friendly. He has helped us fix issues with our diesel truck and other machines. He is the first person we call whenever we have any vehicle that breaks. He is fair and honest in the work that he does.
FAQ
FREQUENTLY ASKED QUESTIONS
Still have questions? Contact Us
Serving Ulm
Ulm sits along the Missouri River just southwest of Great Falls, off Interstate 15. The land around town is open prairie, river bottom and the long sandstone cliffs near First Peoples Buffalo Jump State Park. Ranches and farms spread out on gravel roads from the interstate, and many residents commute on I-15 while running a place on the side. That mix means trucks that see both freeway miles and dusty county roads, plus trailers and small farm machines that work seasonally. Prairie wind, hard winter cold and summer heat all wear on batteries, cooling systems and rubber parts.
Areas of Ulm we serve
- First Peoples Buffalo Jump State Park
- Missouri River
- Interstate 15
Why Ulm customers need this work
Trucks around Ulm often pull double duty: commuting on I-15 during the week and hauling on gravel roads at home. Highway miles wear brakes and transmissions, and gravel roads loosen trailer wiring and beat up suspension. Diesel pickups need healthy fuel systems and glow plugs to start on cold prairie mornings. Smaller farm machines and trailers sit for stretches and then get put to work, which is when leaks, dead electrical and seized parts show up. A shop that works on all of it saves a lot of running around.
Recent work in the Ulm area
- 01.Transmission service on a pickup that commutes and tows
- 02.Diagnostics on a farm machine that will not start after sitting
- 03.Trailer electrical and hitch repair
Why Choose Stotty's Diesel for Auto repair in Ulm
Stotty's Diesel repairs diesel engines, pickups, work trucks, trailers and machines for people in and around Ulm, MT. The shop is in Vaughn on US-89. We find the cause of the problem, tell you what the fix involves and give you the cost before starting. We are open Monday to Friday, 8 to 5. Call ahead and we will plan time for your truck, trailer or machine.
Ulm customers choose us because we treat every project like it's our own — no upselling, no surprises, just straightforward work that gets the job done right.
Whether you live in Ulm or just need a reliable team nearby, we're a short drive from Vaughn and happy to walk you through every recommendation before any work begins.
Stotty's Diesel is a working shop in Vaughn that repairs diesel engines, trucks, trailers and machines. We are open Monday to Friday, 8 to 5. We keep the work honest and fair, and you hear what is wrong and what the repair costs before we start. Bring us the truck, then the trailer, then the machine: many of our customers do exactly that. Call (406) 450-8919 to describe the problem and set up a time to bring it to the shop.
Services We Offer in Ulm
Every service below is available to Ulm customers. Click any service for full details.



