Cummins Diesel Repair
From the 5.9 to the 6.7, we know the Cummins inside out, and we fix it right the first time, without the wait.
Average rating
Google reviews
Years, since 1985
Mile warranty
Quick answer
What Cummins problems do you repair?
We service all common Cummins issues, injector and fuel system failures, turbo problems, EGR and DPF/regen faults, lift pump replacement, and head gasket work, on 5.9L and 6.7L Ram trucks and fleets. We diagnose accurately and fix it right, and we stand behind the work.
What's included
- Injector, lift pump, and fuel system repair
- Turbo diagnosis and replacement
- EGR, DPF, and regen (emissions) service
- Head gasket, cooling, and preventive maintenance
Built for the Yampa Valley
Ranchers, oil & gas crews, and contractors across the Yampa Valley run Cummins-powered trucks for work. We keep them earning with fast, fair diesel service.
Why Chapman's for this
- Free digital inspection with photos
- Transparent pricing, quoted before we start
- Loaner cars, shuttle & pickup
- 5yr / 50,000-mile warranty
What customers say
“Cole, Kyle and the team saved me over $3,000 on my diesel truck repair compared to what I was quoted elsewhere. Honest, fair, and they know diesels.”
Nathan B.
Verified customer
Frequently asked questions
Yes. We diagnose and repair EGR, DPF, and regeneration faults properly so your truck runs clean and stops throwing codes, without guesswork.
Because the work is done right the first time. Our specialists diagnose accurately, explain what they find, and back the repair with our 5-year / 50,000-mile warranty, with a faster turnaround.
Ready for Cummins Repair?
Book online in under a minute, or call and talk to a real person. Craig, CO · Yampa Valley.