Welcome
Reliable 24/7 Mobile Diesel Repair, Truck Service, & Fleet Maintenance
When your diesel truck, trailer, or heavy equipment breaks down, fast and dependable service is critical. NoCo Diesel Services LLC is a trusted mobile diesel mechanic based in Johnstown, Colorado, serving a wide area across Colorado, Wyoming, and Nebraska. We specialize in mobile diesel repair, emergency roadside service, fleet maintenance, DOT inspections, and more. With over 15 years of experience, we bring certified, dealership-level expertise directly to your location.
Welcome
About NoCo Diesel Services
NoCo Diesel Services LLC is locally owned and operated with over 15 years of experience in diesel repair and heavy truck service. Our lead technician is ASE certified for air conditioning systems and has completed factory training through Kenworth. He also spent over a decade working for International Truck dealerships, giving us deep knowledge of Class 8 trucks, aftertreatment systems, and industry best practices.
We specialize in mobile diesel services for commercial trucks, trailers, fleets, construction equipment, generators, and more. Our goal is to provide dealership-level expertise with the convenience and speed of mobile response.
On-Site Truck and Diesel Services That Come to You
We understand how important uptime is for your business. Whether your truck is disabled on the side of the road, or your equipment needs service at your lot, we deliver professional mobile repair services where and when you need them. Our team is available 24/7 for roadside emergencies, scheduled maintenance, and ongoing fleet support.
Services include mobile repair for diesel trucks, semis, trailers, and heavy equipment. From preventive maintenance to electrical diagnostics and aftertreatment systems, our technicians have the tools and knowledge to keep your operations moving.
What We Specialize In
At NoCo Diesel Services LLC, we focus exclusively on diesel-powered commercial and heavy-duty vehicles. Our core services include:
- Mobile diesel repair and roadside service
- Semi-truck and heavy truck repairs
- Trailer repair including brakes, lights, and axles
- Mobile DOT inspections
- DPF/SCR regen and aftertreatment system service
- Diesel engine diagnostics and electrical troubleshooting
- Wheel seal replacements and tire service
- Preventive maintenance (A & B services)
- Fleet maintenance program support
- Heavy equipment and generator repairs
- Air line repairs and system checks
Serving Colorado, Wyoming, and Nebraska
We provide mobile diesel services across Northern Colorado and into surrounding regions of Wyoming and Nebraska. Our extended service area includes:
Fort Collins, CO
Greeley, CO
Longmont, CO
Loveland, CO
Wellington, CO
Johnstown, CO
Meade, CO
Arvada, CO
Thornton, CO
Westminster, CO
Brighton, CO
Commerce City, CO
Aurora, CO
Lakewood, CO
Denver Tech Center, CO
Castle Rock, CO
Bontree, CO
Colorado Springs, CO
Vail, CO
Cheyenne, WY
Fleet Maintenance and Membership Options
For companies operating multiple vehicles, we offer custom fleet maintenance programs. These programs include regular inspections, A & B services, DOT compliance checks, and priority emergency response.
24/7 Diesel Repair You Can Trust
Breakdowns rarely happen at a convenient time. That is why NoCo Diesel Services LLC is available 24 hours a day, 7 days a week. Whether your semi truck breaks down at midnight on I-25, or your reefer trailer needs repair before a delivery, we are ready to respond
Welcome
Common Repairs and Emergency Services
We handle a wide range of mobile diesel repairs, including:
- Engine issues and no-start conditions
- Check engine light diagnostics
- Air brake failure or line leaks
- DEF and DPF aftertreatment problems
- Electrical faults and wiring repairs
- Lighting system failures
- ABS brake system diagnostics
- Flat tires or tire replacements
- Leaking wheel seals or hub problems
- Broken suspension or worn-out shocks
Our diagnostic tools allow us to troubleshoot complex electronic systems quickly and make accurate, efficient repairs in the field.
Contact NoCo Diesel Services LLC
Call or email us to schedule service, request a mobile inspection, or get emergency roadside support. We respond quickly and can often dispatch a technician to your site the same day.