Diesel · Craig, CO
Cummins Diesel Repair
From the 5.9 to the 6.7, we know the Cummins inside out, and we fix it for less than the dealer, 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, typically saving thousands over a dealer quote.
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
“On my 2020 Jeep Cherokee Trailhawk, Kyle and Cole prioritized the right repairs to keep it on the road instead of upselling me. Real expertise.”
Wesley C.
Verified customer
“Full clutch kit replacement at a great price. Professional from start to finish.”
Morgan
Verified customer
“I had to get an oil change before a last-minute trip, and when my regular place couldn’t squeeze me in, I decided to give Chapman a try. I am so glad I did! They got me in right away, and the entire experience was fantastic. Their customer service was noticeably superior to any other shop I’ve been to—the communication was top-notch, and they made everything incredibly easy from start to finish. You can really tell they value your patronage. Chapman has definitely earned my future business!”
noriemoon
2 months ago
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.
Routinely. One customer saved over $3,000 versus the quote on a diesel repair. Same expertise, no dealer markup, and 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.