Heavy-Duty Truck Repairs

Truck Diagnostics & Electrical Repair Services in San Antonio & Austin, TX

Need reliable diagnostics and electrical repair solutions? You've come to the right place. At Austin Fleet Services, we offer diagnostic services and electrical repairs for heavy-duty trucks, medium-duty trucks, fleets, heavy equipment, buses, and trailers.

Diesel mechanic performing diesel diagnostic testing on semi truck in Austin, Texas

Electrical Repairs and Diagnostic Services

We specialize in comprehensive diagnostics and electrical repairs to keep your heavy-duty vehicles operating smoothly. Here are some of the electrical services we offer:

  • Diagnostic Testing: We provide advanced diagnostic testing to pinpoint electrical issues accurately, including issues with wiring, sensors, and electrical components.
  • Battery Replacement: Our expert technicians offer battery replacement services to ensure reliable starting power and electrical system performance.
  • Alternator Repair: We diagnose and repair alternator issues to prevent battery drain and ensure proper charging of the electrical system.
  • Lighting Repair: We offer lighting repair services to address issues with headlights, taillights, brake lights, and turn signals, ensuring visibility and safety on the road.

Reach Out Today!

Ready to schedule diagnostics or electrical repairs for your heavy-duty trucks? Contact us today at (737) 256-7770 to speak with our experienced team and ensure your fleet stays powered up and ready for the road.

Areas We Serve

In addition to our locations in San Antonio and Austin, we offer services within a 50-mile radius of each shop, including the following areas in Texas: Pflugerville, San Marcos, Cedar Park, Round Rock, Georgetown, Elgin, New Braunfels, Schertz, Seguin, Devine, Pleasanton, Floresville, and many more. We offer expert mobile repairs and roadside assistance for those located in these areas.


What are the most common electrical repairs?

Common electrical repairs for heavy-duty trucks include issues with the battery, alternator, starter, wiring, and electrical components such as sensors and switches. If you experience electrical problems, it's essential to have them diagnosed and repaired promptly to prevent further issues.

What does a truck diagnostic test entail?

A truck diagnostic test involves using specialized equipment to scan the vehicle's onboard computer system for error codes and other indicators of potential issues. This test helps identify electrical and mechanical problems, allowing our technicians to make accurate repairs and ensure optimal performance.

How can I get in touch?

You can reach Austin Fleet Services by phone at (737) 256-7770. Our friendly and knowledgeable team is available to assist you with scheduling diagnostics and electrical repairs or answering any questions you may have about our services.

Why Choose Austin Fleet Services?

We can come to you!
Our Patented Service Vehicles are specially designed and equipped to perform 85% of all vehicle maintenance and repair requirements on site.


Professional Light to Heavy-Duty Truck Repair Services

From axle repair to exhaust systems, diesel engines to transmissions, our technicians have the expertise to handle every repair job with precision and efficiency. Get in touch today for service in-shop in San Antonio & Austin, Texas. Or via mobile service in the surrounding areas.

Don't Take our word for it —
Read our reviews

"William is a awesome guy. He did a great job. Called about the tandem axle not sliding and helps me fixed some other little issue. I definitely recommend austin fleet services"

Jackson Epalle

"These guys are great, had an emergency with a DEF pump on a black Friday, only shop that picked up the phone, took my driver in immediately and didn't give me the runaround like most do now. I asked not to diagnose anything and just change the pump. Truck back on the road in 3-4 hours and saved us at least 3 days waiting for another shop to open. Definitely coming back here next time our  trucks are in the area!"

Vlad Supron

"Outstanding experience with AFS and George, their knowledgeable mechanic who replaced my valve cover gasket. My vehicle is running smoother than ever. Thank you AFS!"

Bianca Martinez

Contact Us

Get in touch with Austin Fleet Services today to schedule service in-shop in San Antonio or Austin/Pflugerville, or via mobile service in the surrounding areas.