Diesel Repair & Service in Central Texas

At ATX Fleet Services, in San Marcos, Texas, we specialize in Diesel engine repair for medium to large trucks and trailers. We guarantee a quick turnaround time for a reasonable price and ensure quality service on your fleet vehicles. You're always in good hands when you choose ATX Fleet Services for your truck and trailer fleet repair.

We specialize in all engine types including: Caterpillar, Cummins, Cummins ISX, Detroit, Mercedes, Maxforce, Powerstroke, and many more.

From minor repair and maintenance to comprehensive truck servicing, if it's an issue with your truck, we have the solution.


Some of the many Diesel Truck Services we offer

  • Engine overhaul
  • Diesel engine repair (including Ford Power Stroke engines)
  • Electrical service
  • Welding
  • Oil change / lube service
  • Overheads (tune ups)
  • General Chassis Repair
  • Radiator – coolant / antifreeze change / flush
  • Air filter replacement
  • Brake inspection / check / repair / service
  • Exhaust & Diesel Particulate Filter (DPF) system repair / service
  • Inspection service
  • Transmission service / repair
  • Preventive maintenance
  • Emergency repairs
  • Drive Axles, u–joints, wheel seals, and suspension repair / service
  • Computer/ Check Engine diagnostics
  • Water pumps and Cooling system repair / service
  • A/C System repair and service
  • Differential repair and service
  • Fuel system repair and service
  • Tractor trailer and medium-duty air brake system repair and maintenance
  • Clutch replacements
  • Trailer service
  • Roll–up door service




222 Wonder World drive, San Marcos, TX 78666 (Behind Little Guys Movers)
We can also come to you.


(512) 787-9874
OFFICE LINE (8-5 Mon-Fri)
(512) 667-6466

Hours of Operation

Mon-Friday 8 am - 6 pm
Saturdays 8 am - 1 pm
***We also offer after hours roadside service Mon-Sun***

Fill out the form below or call 512.787.9874