State Regulations
Diesel Emissions Rules by State: What Pickup, RV and Fleet Owners Need to Know
Which diesel emissions rules are federal, which states test, and how to keep a Power Stroke, Cummins or Duramax legal without losing reliability.
Find a Trusted Diesel Mechanic Near You
Diesel Engine Repair
Compare local diesel shops and mobile diesel mechanics for pickups, RVs, fleet trucks and ag equipment. Tell us what's wrong, get quotes from nearby shops, and book the one that fits.
11540+Diesel Shops Listed
2870Open 24/7
50 + DCStates Covered
4.5★Avg Rating
Run a diesel shop or mobile repair service?
Claim Your ShopDiesel Repair Services
Browse shops by the work you need done — from mobile diagnostics on a Power Stroke to full fleet PM programs.
Mobile Diesel Repair
A mechanic comes to your truck, RV or job site with a service van and the tools to fix it where it sits.
- On-site diagnostics
- Roadside diesel repair
- Job-site & farm callouts
- No-start & no-power calls
Diesel Engine Repair & Diagnostics
Check-engine codes, injectors, turbos, fuel systems and rebuilds for Power Stroke, Cummins, Duramax and heavy-duty diesels.
- Computer diagnostics
- Injectors & fuel systems
- Turbo & EGR work
- In-frame & full rebuilds
Brakes & Air Systems
Air brakes, hydraulic brakes, compressors, dryers and ABS faults on trucks, trailers and motorhomes.
- Air brake service
- Slack adjusters & chambers
- Compressor & dryer repair
- ABS diagnostics
DPF, DEF & Emissions
Forced regens, DPF cleaning, DEF system faults, EGR and SCR repairs that keep you out of limp mode.
- DPF cleaning & regen
- DEF pump & sensor repair
- EGR & SCR faults
- Derate & limp-mode fixes
Reefer & APU Repair
Thermo King and Carrier refrigeration units plus APU service so your load stays cold and your cab stays comfortable.
- Thermo King & Carrier
- Reefer diagnostics
- APU service & repair
- Preventive maintenance
Trailer Repair
Lights, landing gear, suspension, doors and floors on dry vans, flatbeds, reefers and gooseneck trailers.
- Lights & wiring
- Landing gear & suspension
- Doors, floors & roofs
- DOT inspection repairs
Fleet Maintenance
Scheduled PM services, DOT inspections and fleet accounts for contractors, delivery fleets and owner-operators.
- PM service intervals
- DOT annual inspections
- Fleet accounts & billing
- Multi-unit scheduling
RV & Agricultural Diesel
Diesel motorhomes, pushers, tractors, combines and farm equipment — shops that work on the big stuff.
- Diesel motorhomes & pushers
- Tractors & combines
- Farm & ranch callouts
- Generator & pump engines
Browse Diesel Shops by State
Diesel repair shops and mobile mechanics in every state — pick yours to drill down to cities and service types
160 Cities 365 Shops
183 Cities 355 Shops
205 Cities 325 Shops
170 Cities 311 Shops
136 Cities 294 Shops
133 Cities 292 Shops
130 Cities 289 Shops
123 Cities 280 Shops
115 Cities 276 Shops
136 Cities 276 Shops
156 Cities 275 Shops
144 Cities 274 Shops
102 Cities 267 Shops
135 Cities 260 Shops
100 Cities 254 Shops
45 Cities 253 Shops
132 Cities 252 Shops
98 Cities 251 Shops
78 Cities 248 Shops
132 Cities 246 Shops
144 Cities 246 Shops
65 Cities 241 Shops
117 Cities 239 Shops
119 Cities 238 Shops
88 Cities 236 Shops
Trusted Diesel Shops
Premium and verified diesel repair shops with solid track records and strong customer ratings
24/7
24/7
24/7
24/7
24/7
Diesel Tips & Repair Guides
Maintenance how-tos, diagnostic walkthroughs, DPF and emissions explainers, and cost guides for diesel truck, RV and fleet owners
Diagnostics & Repair
What Does a Turbo Look Like? A Visual ID Guide
A diesel turbo looks like a snail-shaped metal housing bolted to the exhaust manifold, with a round compressor wheel on one end and a ribbed turbine housing on the other. This guide shows you how to spot one, tell it apart from other engine parts, and catch early signs of failure.
Diagnostics & Repair
What Is Blow-By on a Diesel? Causes, Symptoms & Fixes
Blow-by happens when combustion gases leak past the piston rings into the crankcase. Learn what causes it, how shops test for it, and when it means an engine rebuild is coming.
How USA Diesel Finder Works
Four steps from "something's wrong with my truck" to a booked repair — usually with quotes back the same day.
Tell Us the Problem
Pick the service you need, describe the symptom, and tell us what you drive — pickup, RV, semi, ag equipment.
- Symptom in your own words
- Engine family & truck class
- Mobile, in-shop or either
About 2 minutes
No phone tag
We Match Nearby Shops
Your request goes to diesel shops and mobile mechanics that cover your area and do that kind of work.
- Matched by service & location
- Independent shops & mobile techs
- Only shops that fit the job
A few minutes
Right shops, not every shop
Compare Quotes
Shops reply with pricing, availability and how they'd approach the repair. Ratings and reviews are right there.
- Side-by-side pricing
- Verified shop profiles
- Real customer reviews
Same day, usually
Know before you go
Book the Repair
Pick the shop that fits, confirm the time, and get your truck back on the road or the field.
- Book direct with the shop
- No booking fees
- Leave a review afterwards
You set the schedule
Back to work
Why Owners Use USA Diesel Finder
Diesel-Only Shops
Every listing works on diesel — Power Stroke, Cummins, Duramax and heavy-duty engines — not just anyone with a lift.
Mobile or In-Shop
Filter for mobile diesel mechanics who come to you, or shops with bays for bigger jobs.
Free to Use
Requesting quotes and browsing shops costs you nothing. Shops pay to be featured, never to be listed.
Local & Independent
Built around neighborhood diesel shops and owner-operated mobile services, not national chains.
Run a Diesel Shop or Mobile Service?
Claim your free listing, add your services and hours, and start getting repair requests from truck, RV and fleet owners near you.
FreeBasic Listing
50 + DCStates Covered
InstantQuote Alerts