Diesel Engine Repair & Diagnostics Shops Near You

Shops that live inside Power Stroke, Cummins, and Duramax engines — computer diagnostics, injectors, turbos, fuel systems, and full rebuilds.

11,395 shops 51 states
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About Diesel Engine Repair & Diagnostics

When a Power Stroke starts smoking, a Cummins loses power under load, or a Duramax throws an injector code, you want a local shop that works on diesels every day rather than once a month. The engine and diagnostic specialists here serve your area and the surrounding region — with scan tools that read manufacturer codes, injector test benches, and mechanics who know which failures are common on your engine before they lift the hood.

What these shops handle

  • Power Stroke, Cummins, Duramax
  • Injectors, turbos, fuel systems
  • Check-engine diagnostics
  • In-frame and full rebuilds

Browse Diesel Engine Repair & Diagnostics by State

Pick a state to see top-rated shops, or search by shop name, city, or service.

DIESEL MOBILE TECH

Open 24 Hours
Houston, TX
(832) 890-5578
5.0★(17 reviews)
Brake ServiceDiesel Engine RepairDiesel SpecialistEmergency Repair +2 more
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Commercial Collision Centre

Dallas, TX
(214) 864-8630
5.0★(16 reviews)
Diesel SpecialistCommercial & Fleet
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Dan's Equipment Service

Open 24 Hours
Alvin, TX
(832) 807-8567
5.0★(21 reviews)
Fleet MaintenanceEngine DiagnosticsDiesel Engine RepairHydraulic Repair +3 more
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JTM Fleet Maintenance

San Antonio, TX
(210) 662-0019
5.0★(2 reviews)
DOT InspectionsFleet MaintenanceDiesel Engine RepairRV Repair +2 more
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Equipment Repair Solutions

Houston, TX
(281) 687-7237
5.0★(15 reviews)
Diesel SpecialistDiesel RepairIndependent ShopHighly Rated
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River Run Fleet Services - Truck & Trailer Mobile Repair

Dallas, TX
(817) 683-0817
5.0★(2 reviews)
DOT InspectionsEmergency RepairFleet MaintenanceDiesel Specialist +2 more
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View all 365 shops in Texas

Diesel Engine Repair & Diagnostics FAQ

Yes, and sooner rather than later. On a modern diesel the light often means an emissions, sensor, or fuel-pressure fault that has not become a driveability problem yet. A local diesel shop can pull the code, read live data, and tell you whether it is a $40 sensor or the early sign of a failing injector. Diagnostic time is normally billed as a flat fee or one hour of labor.

Other Diesel Services

Not quite the right category? Browse the rest of the directory.

Mobile Diesel Repair

Mechanics who bring the shop to your driveway, job site, or the shoulder of the road when a diesel will not move under its own power.

Brakes & Air Systems

Hydraulic and air brake work for diesel pickups, medium-duty trucks, and semis — pads, drums, chambers, slack adjusters, compressors, dryers, and leaks.

DPF, DEF & Emissions

DPF cleaning and forced regens, DEF and SCR system faults, EGR coolers and valves, NOx and pressure sensors — the aftertreatment work that keeps a modern diesel legal and running.

Reefer & APU Repair

Thermo King and Carrier reefer units, auxiliary power units, and truck-mounted refrigeration — the small diesels and compressors that keep the load cold and the cab warm.

Trailer Repair

Dry vans, flatbeds, goosenecks, and equipment trailers — brakes, lights and wiring, landing gear, suspension, doors, floors, and DOT inspections.

Fleet Maintenance

Preventive maintenance programs, DOT inspections, and scheduled service for businesses that run diesel trucks, vans, and equipment — with fleet accounts and after-hours access.

RV & Agricultural Diesel

Diesel motorhomes and pushers, farm tractors, combines, and irrigation engines — shops with the bay height and the patience for the machines regular garages turn away.

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