About Sandmann Repair
From Long Days In The Shop To Building Something Of His Own
Truck trouble doesn't wait for a convenient time. Neither should dependable service. We pride ourselves on honest pricing, and mobile repairs to hardworking drivers across northeastern Wyoming.


Sandmann Repair didn't start with a big facility or a fleet of service trucks
It started with one mechanic, years of hands-on experience, and a determination to build something better.
Before starting the business in 2019, our owner spent years working on trailers, semi-trucks, pickups, and buses. He maintained vehicles for the Gillette school district, worked in oilfield water hauling, and helped keep equipment running for a dirt work company.
Long workdays eventually led to a decision: build a business that gave him more time with family while letting him keep doing the mechanical work he knew best.
That decision became Sandmann Repair.
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More Than Just Truck Repair
In addition to diesel truck repairs, we also specialize in trailer repairs. That means you can address multiple issues in one place instead of coordinating with multiple shops.
From minor fixes to major repairs, the goal is simple—get your equipment back on the road as quickly and reliably as possible.Why Mobile Repair Matters Around Upton
Out here, a breakdown isn't always a short drive from the nearest repair shop. You might be hauling along I-90, working miles outside town, or trying to keep equipment moving on a remote job site.
Getting a disabled truck to a shop can mean arranging a tow, losing valuable hours, and falling behind schedule.
That's why we bring the repair service to you.
Based in Upton, WY, we travel throughout the surrounding region, helping drivers and businesses in Gillette, WY; Douglas, WY; Spearfish, SD; Rapid City, SD; and nearby areas. Longer trips may also be possible depending on the job.

What Keeps Customers Coming Back?
You shouldn't have to wonder whether your mechanic knows what they're doing or what the final bill will look like.
With over 15 years of experience, our owner brings practical knowledge backed by training in diesel engines, brake inspections, and A/C systems.
But technical knowledge is only part of the job.
As a veteran-owned, service-disabled veteran-certified business, we believe in giving you straight answers. That means explaining the problem, providing upfront pricing, and calling before making changes that affect the work or cost.
We also offer discounts for veterans, first responders, and educators.
It's a straightforward approach, and it's helped us build lasting relationships with customers who know they can call when something goes wrong.
Get To Know Your Mobile Mechanic
When something goes wrong with your truck, you deserve someone who understands the problem and respects your time.
Call us to speak with Sandmann Repair about your vehicle, location, and service needs. We'll help you figure out the next step.

Get In Touch
Truck trouble? Skip the tow and let Sandmann Repair come to you. With 15+ years of experience, we deliver reliable mobile diesel repairs wherever your work takes you.