Diesel engines need a shop that actually knows them. We have the equipment, experience, and honesty to get your truck back on the road.
We’ll get back to you same business day.
Mon–Fri 8AM–6PM | 2565 Copper Ridge Dr, Steamboat Springs
1-Off Auto Center has been working on diesel trucks and vehicles in the Yampa Valley since 2009. Ranchers, contractors, outdoor enthusiasts, and everyday drivers trust us with their Ford Power Strokes, Chevy Duramax, and Ram Cummins engines because we treat diesel as a specialty, not an afterthought.
Our ASE-certified technicians use dealer-grade diagnostic equipment to read diesel-specific fault codes accurately, and every diagnosis is explained in plain language before any work is approved. If your diesel is the vehicle your livelihood or lifestyle depends on, bring it to a shop that takes it as seriously as you do.
Dealer-grade equipment reads diesel fault codes accurately. No guesswork.
Every qualifying repair covered for 24 months / 24,000 miles.
Ranchers, contractors, and truck owners have relied on us since 2009.
1-Off Auto Center has been the go-to repair shop for Steamboat Springs drivers since 2009. Jason Bongiorno and the team have built this place on something simple: fix what needs fixing, be honest about what doesn’t, and do the work right. That’s it.
We’re a family-owned shop — not a chain, not a franchise — and we treat every vehicle that comes through our doors the same way we’d treat our own. Our technicians are ASE-certified, our facility is clean and well-equipped, and as a NAPA AutoCare Center, every qualifying repair comes with a 24-month/24,000-mile warranty honored at over 14,000 locations nationwide.
We work on everything: gas, diesel, foreign, domestic, trucks, SUVs, sedans. If it has an engine and four wheels, we can handle it.
Diesel engines are built to last, but they require precise maintenance and experienced hands when something goes wrong. Here’s the full range of diesel services we provide.
Diesel fault codes aren’t the same as gas engine codes, and reading them correctly requires diesel-specific equipment. Our dealer-grade scan tools identify the actual problem before a single part is ordered — with a clear explanation of the cost to fix it.
Engine rebuilds, head gasket replacement, injector service, turbocharger repair, EGR service, and DPF cleaning. We work on Ford Power Stroke, Chevy Duramax, and Ram Cummins platforms as well as light-duty diesel imports.
Diesel pickups are the working vehicles of choice across the Yampa Valley. We service every model that comes through Steamboat, including lifted and modified trucks — repair, maintenance, or a full pre-haul inspection.
Diesel fuel systems run at much higher pressures than gas and require precision maintenance. We inspect, clean, and service fuel injectors, high-pressure pumps, filters, and lines on all diesel platforms to keep performance and economy where they should be.
A failing turbo means lost power, excess smoke, and potential engine damage if ignored. We diagnose turbo issues accurately, repair what can be repaired, and replace what can’t. Thin mountain air makes performance drops easy to spot early.
Diesel exhaust fluid systems, particulate filters, and EGR valves require specific service intervals and correct diagnosis. We service these systems properly rather than deleting them — keeping your vehicle road-legal and running as designed.
Diesel engines run hotter and under more load, making the cooling system critical. We inspect, flush, and service diesel cooling systems — water pumps, thermostats, radiators, and coolant lines — on all truck platforms.
Heavy towing and mountain grades stress diesel transmissions and drivetrains hard. We service automatic and manual diesel transmissions, transfer cases, differentials, and driveshafts on trucks and SUVs across all makes.
Oil changes, fuel filter replacements, air filter service, belt and hose inspections, and fluid checks done on the correct diesel intervals. Every maintenance visit includes a free visual inspection so nothing slips through the cracks.
Ford F-250 & F-350 Power Stroke, Chevy & GMC Duramax, Ram 2500 & 3500 Cummins, Toyota diesel, and light-duty diesel imports. If it runs on diesel, we work on it.
From a quick oil change to a complex diesel rebuild, our ASE-certified technicians handle it all — on all makes and models, gas and diesel, foreign and domestic.
Your first line of safety on mountain roads. We’ll tell you honestly if they can wait.
Steamboat’s roads are rough on suspension. We diagnose and fix it right — not just good enough.
Every oil change includes a free visual inspection. We check fluids, filters, and tell you what we found.
We get to the actual cause, not just the code — so you don’t pay to fix the wrong thing.
We diagnose and repair HVAC systems on all vehicle types so you’re comfortable in every season.
Heavy-duty alignment rack, quality tires, and proper alignment that protects your fuel economy.
Not every shop knows the difference between gas and diesel. We do — routine to complex.
Electrical issues are the hardest to diagnose. We have the equipment to trace it to the source.
Keep your engine, transmission, and differential protected for life with our BG Products-backed Lifetime Protection Plan.
We’ve worked on diesel engines in the Yampa Valley since 2009. Owners bring their trucks here because they know the difference between a shop with diesel experience and one that figures it out as it goes.
Our scan tools read diesel-specific fault codes accurately on all major platforms. You get a real diagnosis, not a code printout, before any work is approved.
We tell you what your diesel needs and what can wait. Every estimate is itemized and clear — no pressure to approve work that isn’t necessary.
Every qualifying repair is covered by a 24-month / 24,000-mile NAPA Peace of Mind Warranty, valid at 14,000+ locations nationwide.
Voted best by the Steamboat Springs community, multiple times. That comes from real customers, not a marketing push.
We support the Steamboat Sailors, Routt County 4H, Young Life, and Steamboat Dance Theater. This valley is home and we act like it.
Here’s exactly what happens when you bring your diesel in for service at 1-Off Auto Center.
Call us at (970) 871-1346 or fill out the form on this page. Tell us what your diesel is doing — loss of power, excessive smoke, warning lights, rough idle — and we’ll get you scheduled.
Bring your truck to 2565 Copper Ridge Dr, Steamboat Springs. We’re open Monday through Friday, 8 AM–6 PM. Let us know the full history of the issue and we’ll take it from there.
Our technicians run a full diagnostic using dealer-grade equipment on your specific diesel platform — fault codes, live data, fuel pressure, and related systems. You get a plain-language explanation before any repair is authorized.
Once you approve the work, we get it done with quality parts and correct torque specs for your diesel engine. Every qualifying repair is backed by the NAPA Peace of Mind Warranty. We road test and verify before the truck leaves the bay.
We call when your truck is ready and walk you through everything that was done. If something comes up after pickup, we’re here — same shop, same team, same accountability.
“Awesome service and expertise. Hands down best in the region! Kevin gave a great post tutorial which was very helpful!!”F
“They are always so kind, accommodating and respectful. I trust them a lot and value their service.”J
“Best in the boat!!!! One off is the only car or truck shop I will use for all my cars from a basic truck to a 2025 zo6 corvette they are the best !!!”J
24-Month / 24,000-Mile Peace of Mind Warranty honored at 14,000+ locations nationwide
Certified to the automotive industry’s highest standards of knowledge and competency
Voted best auto shop by the Steamboat Springs community, multiple years running
Steamboat Sailors · Routt County 4H · Young Life · Steamboat Dance Theater
Every qualifying repair at 1-Off Auto Center is backed by the NAPA Peace of Mind Warranty — 24 months or 24,000 miles, honored at over 14,000 NAPA AutoCare locations nationwide. It’s one of the strongest warranties in the auto repair industry.
Diesel owners across the Yampa Valley drive to 1-Off Auto Center because qualified diesel mechanics in this region are hard to find. We handle every diesel platform under one roof, and ranchers, contractors, and truck-dependent families in surrounding communities count on that. Not sure if we cover your area? Call us at (970) 871-1346. Most Yampa Valley diesel owners are well within reach.
1-Off Auto Center at 2565 Copper Ridge Dr is Steamboat’s diesel repair specialist. We service all major diesel platforms Monday through Friday, 8 AM to 6 PM. Call (970) 871-1346 or submit a request online to get scheduled.
Diesel fault codes require diesel-specific diagnostic equipment to read accurately. A generic scan tool will pull a code, but it won’t give you the full picture. Bring your truck to us and we’ll run a proper diagnostic, explain what it means, and give you an honest estimate before anything is touched.
Yes. Lifted trucks, performance diesel builds, and modified platforms are common in the valley, and we work on them regularly. We handle suspension, alignment, and drivetrain work on modified trucks in addition to all standard diesel repair and maintenance.
We work on all major diesel platforms, including Ford Power Stroke (6.0L, 6.4L, 6.7L), Chevy and GMC Duramax, Ram Cummins (5.9L and 6.7L), Toyota diesel, and light-duty diesel imports. Gas and diesel, domestic and foreign, light duty to heavy duty.
Diesel service intervals differ by platform and usage. Most diesel trucks need an oil and filter change every 5,000 to 7,500 miles, depending on the engine and oil type. Fuel filter replacement is typically every 15,000 to 30,000 miles. We’ll put your truck on the correct schedule for its platform and how you use it.
Every qualifying repair is backed by the NAPA Peace of Mind Warranty — 24 months or 24,000 miles, valid at over 14,000 NAPA AutoCare locations nationwide. It’s one of the strongest warranties in the industry.
Your diesel truck isn’t a vehicle you can afford to have down. 1-Off Auto Center has the equipment, the experience, and the straight talk to diagnose and fix it correctly. We’ve been the Yampa Valley’s trusted diesel repair shop since 2009, and we stand behind every job.
