Keeping Your Diesel in Top Condition.

Powered by cutting edge diagnostics since 2010, get expert diagnostics and repair from a team dedicated to diesels.



Based on 200+ Reviews

Keep Your
Workhorse Running

There’s a reason you invested in a diesel truck – whether it’s torque, towing ability, or increase in fuel mileage for your long hauls. You’re towing loaded trailers up Idaho’s steep grades, dirt roads and interstates. It doesn’t matter if you have a new diesel or if you’re getting the most out of your trusty high mileage truck, it has to perform. With over 14 years of experience and 9,000 diesels repaired, if you’ve got a problem, chances are we’ve seen it and solved it. 

Specialized Diesel Repair and Service

You’ve invested too much in your truck to trust it to just anyone. 

Our team exclusively repairs and services diesels. We’re not a jack of all trades, instead we invest time, energy and passion into our craft – diesels. Our ASE Certified Master Diesel Technicians are experts at repairing Power Stroke, Duramax and Cummins engines as well as the trucks that surround them. Whether you are looking for preventative maintenance, noticed a clunk or have waning performance, you can be assured your truck is in good hands.

Better Diagnostics with Factory Equipment

We use the same equipment and technology as the dealers. Our diagnostic equipment comes directly from Ford, GMC and Dodge, giving our team access to the best troubleshooting information available. Factor equipment and factory subscriptions don’t come cheap, but we believe it’s a critical investment to enable us to effectively diagnose issues so our clients can get back on the road faster.

Master Certified Technicians

Every technician at Gem State Diesel and Repair is a ASE Master Certified technician. That’s the highest qualification available for work on diesel engines. Just like other professionals, our technicians have continuing education and keep current on the new equipment and technology.

Hand-Selected Replacement Parts

There’s a lot of trust in a mechanic’s choice of replacement parts. If you bring your truck into Gem State Diesel, you can rest assured that we are repairing it with high quality parts.  We’re not just replacing it with the same part that failed in the first place. We identify better than factory components to make the repairs last, and we’re willing to stand behind it with our 2 year / 24,000 mile warranty.  

Stocked Parts

We invest in stocking inventory at our shop. By having commonly needed parts on-hand, we can turn around repairs quickly. We prioritize inventory based on what parts are commonly needed, parts that have been needed more than once, or parts that we know have an extensive wait time. Our full-time parts person helps us ensure we have the right inventory on hand as much as possible.

In-House Machine Shop

Our in-house machine shop means you’re not stuck waiting for third-party suppliers to get back on the road. Our machine shop can repair a single part or do a complete rebuild of most engines. Rebuilding engines, cylinder head replacement, resurfacing exhaust manifolds, cylinder head rebuild and repair, resurface flywheels, and fixing warped components are just a few of the items our in-house machine shop can handle. 

Over 9,000 Diesels Repaired & Counting

We’ve been helping Idaho diesel owners get back on the road since 2010. 

With over 9,000 diesels repaired, if you’ve got a problem, chances are we’ve seen it and solved it. 

We’re your go-to expert for Ford Power Stroke, Dodge Cummins and Chevy/GMC Duramax engines. We stand behind our parts and our workmanship. That’s why we offer a 2 year, 24,000 mile warranty – double that of most dealers.

Getting You Back on the Road

Schedule an Appointment
Get your truck in quickly
Inspection or Diagnostic Services
Efficient diagnosis of the source of the problem with computer-assisted diagnostic tests.
Upfront Price Estimate
You’ll get a price estimate for approval before we begin work
Enjoy Your Peace of Mind
Get back on the road timely at a fair price. Our work is backed by a 2-year 24,000 mile warranty.

Repairing Idaho’s Diesels Since 2010

With so many options out there, it’s important to do your due diligence when choosing a diesel repair shop. You want your diesel repaired by experts. You want honesty. You want upfront pricing and timely repair. You want the experience our customers rave about.

But You Don’t Have to Take Our Word for It.

Schedule an Appointment