CMC Diesel went the extra mile!

I called upon these good folks in my hour of need, Friday afternoon. I was passing through and they said to bring it right in. I arrived and they pulled me right on in. Within minutes, they had my issue properly diagnosed and had put the parts wheels in motion. Big Timber is out there, so they had to pull parts from the East and the West. All said and done, CMC Diesel had me in and out the door in under 6 hours. They went the extra mile to source my parts FAST and stayed after hours to get me back on the road, with a top notch repair. Thank you Clay and crew for what you do. You are my new Montana go to!  - Ben R.

Fair pricing and excellent work!

Blew a head gasket on my 2011 Dodge 2500. Explained previous shop repaired it, what I wanted from my truck, and never for this to happen again. Clay listened! He gave me fair pricing, excellent work, and fair timing for what was being done. His knowledge and recommendations of what I requested gave me the truck and power I've needed. Excellent customer service from this shop and employees in Big Timber, MT!!! - Damon B.

This shop knows diesel trucks and performance!

I broke down just 5 miles outside of Big Timber, MT with High Pressure Oil Pump failure on 07 F350. Called CMC at around 0700 on a Tuesday and CMC had arranged and helped me get my truck and trailer off the highway by 0830. Clay (owner) diagnosed and fixed my truck immediately without extra parts to fix one problem. This shop knows diesel trucks and performance!!! These guys were also the most hospitable shop I've ever come across as a lonely wayfaring traveler. - Golff S.

Excellent service and fair pricing.

Breaking down on a road trip with the whole family on Memorial Day weekend is usually a recipe for disaster. IF you can find a mechanic, you hope not to be taken for a ride. But I'm lucky I found Clay from CMC Diesel.

He quickly diagnosed a failing fuel solenoid on my '97 Dodge Ram 2500 Diesel, recommended a quick fix to get me back on the road, and gave me advice for how to fix it for good when I got back home. He and his wife were very polite and helpful, and his charge for the work was more than fair - it even made me feel a little guilty.

Excellent service, knows diesels inside and out, and fair pricing. If I break down on the road again, I'll just ask to be towed to Big Timber so CMC can work on it. - Christopher S.

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CMC Diesel

location small1008 East 1st Ave
Big Timber, MT 58011


CALL:  (406) 932-5021

Shop Hours

Weekdays:   8:00 AM - 5:30 PM
Saturdays: CLOSED