Diesel Repair San Antonio

Struggling with a diesel engine issue in San Antonio? From Cummins and Powerstroke to Duramax, we specialize in complete diesel truck repair, on-site or in-shop, wherever you need us.

Services List


Preventive & Maintenance
Engine & Drivetrain
AC & Heating
Brakes Repair
Electrical & Diagnostics
EGR & DPF Repair
Fluids & Lubrication
Tire Repair
Bodywork Repair
Fabrication & Welding
Diesel Repair
Towing Services
Transmission & Clutch Repair

24/7 Online support


We offer 24/7 roadside assistance for emergency truck repairs in San Antonio and surrounding areas. Our mobile mechanics are just a phone call away!

+1 (210) 460-1121

info@210truckrepair.com

Mobile Diesel Repair San Antonio | 24/7 Emergency Service

Breakdowns don’t wait and neither do we. At 210 Truck Repair, we provide professional, on-site diesel repair services for trucks and trailers across San Antonio. Whether you’re estranded on I-10 or stuck at a yard with an idle fleet, our ASE-certified diesel mechanics arrive within 30 to 40 minutes. We are fully equipped with advanced diagnostic tools and OEM-grade parts. From minor power loss to complete no-starts, we handle everything at your location, so no towing needed.

Diesel Repair Services in San Antonio

Full-Service Diesel Truck Repair in San Antonio

210 Truck Repair provides professional diesel truck repair services in San Antonio for all makes and models, including Class 8, heavy-duty, semi-trucks, box trucks, and fleet vehicles. Whether you need a quick roadside fix or a complete diesel engine rebuild, we’ve got your back. Our certified diesel mechanics offer:

  • Diesel engine diagnostics & fault code clearing
  • Diesel fuel injection & DEF system service
  • Diesel particulate filter (DPF) cleaning
  • Head gasket, injector, and turbo replacements
  • Diesel emissions and EGR valve service
  • Transmission, brake, and driveline repairs
  • Fuel Delivery if you’re low or out on the road
  • DOT inspections and full diesel fleet maintenance
  • Towing Coordination if your truck requires shop-level repairs
  • Lockout Assistance to regain access without damage
  • Mobile diesel truck suspension and steering repairs
  • Powerstroke, Duramax & Cummins engine repairs
  • On-the-spot diagnostics and immediate repair for electrical, engine, or DEF system failures
  • Jumpstarts for dead batteries or starter failure
  • Diesel AC & heating system repairs

Diesel Trailer Repair On-Site Services in San Antonio

We also specialize in diesel trailer repair services in San Antonio from flatbeds and reefers to heavy-duty utility trailers. Our mobile team provides:

  • Trailer brake and suspension repairs
  • Wiring and lighting system diagnostics
  • Diesel reefer unit repairs & inspections
  • 7-pin and 9-pin connector repairs
  • Air lines, hub seals, and tire replacement
  • Preventive maintenance for trailer HVAC & APU units

Whether your trailer is stuck with an electrical fault or your reefer isn’t cooling, we get you back on the road without delay.

Diesel Engine Inspections & Performance Testing San Antonio

Not sure what’s wrong? We perform in-depth diesel diagnostics in San Antonio using computerized scan tools to analyze live engine data, detect sensor failures, and troubleshoot:

  • Diesel ECM and ECU issues
  • Injector balance testing
  • Fuel rail pressure analysis
  • Turbo boost and airflow issues
  • Battery and alternator voltage checks
  • DEF pressure sensors and level sensors
  • Diesel emissions compliance and regeneration faults

Preventive Maintenance for Diesel Trucks, San Antonio

Avoid surprise breakdowns and DOT violations with scheduled diesel truck maintenance in San Antonio. We help fleets and owner-operators stay road-ready with:

  • Diesel engine oil & filter changes
  • Brake fluid and coolant flush
  • Fuel, air, hydraulic, and DEF filter replacements
  • Mileage-based service scheduling (30K, 60K, 90K)
  • Battery testing and replacement
  • Full driveline inspections
  • DOT pre-trip and annual checkups

Diesel Brands We Service in San Antonio

We repair all major diesel truck brands, including:

From light-duty pickups to full-sized semis, our diesel mechanics in San Antonio are trained on both OEM systems and aftermarket upgrades.

Service Areas | Diesel Repair Near Me San Antonio

Looking for “diesel truck repair near me”? We serve all of San Antonio and nearby towns with fast, same day diesel repair. We cover:

  • San Antonio
  • Converse
  • Leon Valley
  • Live Oak
  • Schertz
  • Alamo Heights
  • Selma
  • Windcrest
  • Universal City
  • Kirby and beyond

Diesel Truck Problems We Fix

Truckers call us for these urgent diesel repair problems in San Antonio:

  • Diesel truck blowing white smoke or won’t start
  • DEF light on but fluid level is full
  • Diesel truck overheating or losing power
  • Check engine light and low boost pressure
  • Diesel truck leaking fuel or hard starting
  • Transmission slipping or won’t shift gears
  • Turbo not spooling or misfiring cylinders
  • Truck shaking at idle or surging while driving

diesel repair Services Work

Customer Testimonials

Rick S.

“They diagnosed a fuel system issue in my ISX15 right on-site and got it fixed before I missed my delivery window. These guys are the real deal.”

Google Review San Antonio

Brian M.

“We run 12 trucks and use them for all our diesel repairs. They track our service intervals and keep us compliant. Great partner.”

Google Review San Antonio

Jessica L.

“Our reefer unit died mid-load. They came within 40 mins, rewired the control board, and saved the shipment. Life savers.”

Google Review San Antonio

FAQ’s

Yes, our mobile diesel repair units operate 24/7 and reach you in 30 to 40 minutes across the San Antonio metro area.

Absolutely. We repair wiring, connectors, reefer units, and diesel-powered APU systems on trailers, all on-site.

Yes, including Cummins, Duramax, Powerstroke, and others. We also handle foreign and domestic diesel engines.

Yes. We use dealer-grade tools for diesel diagnostics and can reset and clear fault codes on the spot.

Call us at +1 (210) 460-1121 and we’ll dispatch a certified diesel mechanic to your location.