Mobile Diesel &
Fleet Repair
You Can Count On.
Certified, licensed, and insured mobile mechanic proudly serving Northern Colorado with honest, efficient repair and maintenance services.
Built For Every Job On The Road.
From routine maintenance to emergency roadside fixes — we bring the shop to you.
Mobile Diesel Repair
On-site diagnostics and repairs for heavy-duty diesel engines, anywhere you break down.
Gas Vehicle Repair
Full-service gas engine repair and maintenance for cars, trucks, and work vehicles.
Fleet Maintenance
Scheduled service plans that keep commercial fleets rolling and uptime maximized.
Trailer Repair
Brakes, bearings, lights, suspension — trailer repairs done on your lot or the roadside.
Preventative Maintenance
Fluid services, inspections, and tune-ups to stop breakdowns before they happen.
Roadside Diagnostics
Code reads, sensor checks, and live diagnostics with shop-grade tooling at your location.
Emergency Repairs
Stranded? Fast-response emergency repair to get you back on the road.
Enclosed Trailer Service
Specialized service for enclosed trailers, cargo haulers, and toy haulers.
Trust, Forged In Grease.
Honest Service
Straight talk, fair pricing, no upsells.
Fast Response
Quick dispatch when you can't wait.
Experienced Technician
25+ years under the hood.
Fleet Support
Keep your operation moving.
Mobile Convenience
We come to you, every time.
Northern Colorado Local
Your neighbors, your mechanic.
25 Years Of Experience.
Built On Honesty.
Diesel Daddy, LLC is a family-owned Northern Colorado mobile mechanic business focused on dependable repairs, honest communication, and earning customer trust through quality work and efficiency. We treat every truck like it's our own — because when you call us, you're not just another ticket. You're a neighbor that needs to get back to work.
Keep Your Fleet Moving.
Downtime costs you money. We build maintenance programs around your schedule, dispatch mobile techs to your yard, and prioritize emergency repairs so your operation never stops.
Proudly Serving
Northern Colorado.
From the Front Range to the high plains, we're on-call across Northern Colorado and the surrounding regions.
100% Recommended.
"Called for a breakdown on I-25 and he was there in under an hour. Diagnosed and fixed it on the shoulder. Saved us a tow and a full day of downtime."
"Honest, fast, and actually knows diesel. Keeps our whole fleet running and never tries to upsell us. Highly recommend for any commercial operation."
"25 years of experience shows. Found a fuel system issue two other shops missed. Fair price, great work. He's my guy from now on."
"Came out to our jobsite same-day. Got the dump truck back online before lunch. Can't ask for more than that."
Need Mobile
Repair Fast?
Don't sit on the shoulder. Call now and a tech is on the way.
Get A Tech
On The Way.
Call for emergencies. Submit the form for quotes, fleet inquiries, and scheduled service.