Your Trusted Heavy-Duty Diesel and Trailer Repair Shop in Converse, TX
Since 1999, GTC Services has been a trusted name in heavy-duty diesel and trailer repair throughout Converse, TX, and the greater San Antonio area. What began as a small family operation supporting a local trucking fleet has grown into one of South Texas’s most respected service centers for fleet maintenance, HVAC repairs, transmission rebuilds, and welding services. Our mission has always remained the same—keep trucks on the road and minimize downtime for the hardworking professionals who depend on them.
Our Story
The roots of GTC Services run deep in the trucking industry. Our owner, Merced Carbajal, carries on the family legacy started by his grandfather and uncle, who owned a trucking business with multiple units. To manage their own maintenance needs, they opened a small shop—one that quickly became the go-to destination for friends and local drivers alike. In 2014, the business was formally incorporated as GTC Services, and Merced, who started working in the shop in 2015, has held every role—from technician to manager to owner.
This hands-on experience gives Merced and his team an unmatched understanding of what drivers and fleet managers truly need—honesty, efficiency, and precision work. Whether it’s a single truck or an entire fleet, our customers trust us to deliver results that keep them on schedule and out of the breakdown lane.
What Sets Us Apart
At GTC Services, we pride ourselves on speed, skill, and craftsmanship. Our 20-bay facility and seven ASE-certified technicians allow us to provide same-day turnaround for many major repairs. When we say we’ll get you back on the road fast—we mean it.
We specialize in:
- HVAC system repairs to keep your cab comfortable in any season
- Transmission and clutch services for smooth shifting and power delivery
- Preventive maintenance programs that reduce downtime and costly failures
- Trailer repairs, including wheel seals, brakes, and wiring
- Steel and aluminum welding, custom fabrication, and structural work
Our partnerships with Blackstone (fleet parking and storage), Guerra Truck Center, and IronLite Trailers in Mexico strengthen our network and help us serve a diverse range of commercial clients. We also offer state and federal DOT inspections and stand behind all parts and labor with reliable warranty options.
Our Commitment to Quality
We know that time off the road means money lost. That’s why our customers choose GTC Services for fast, reliable repairs without cutting corners. Every service we provide—whether it’s diagnosing an engine issue, rebuilding a transmission, or rewiring a trailer—is done with precision and pride. Our technicians stay up to date on the latest diesel technologies and repair techniques to ensure every vehicle leaves our shop running at peak performance.
Areas We Serve
Based in Converse, TX, we proudly serve drivers and fleets throughout a 60-mile radius, including: San Antonio, TX; Schertz, TX; Universal City, TX; Austin, TX; Selma, TX; La Vernia, TX; and New Braunfels, TX.
Contact Us
If you’re looking for a trusted diesel and trailer repair shop in Converse, TX, look no further than GTC Services. Visit us at 12930 IH 10 E, Converse, TX, or give us a call at 210-648-0316. We’re open Monday through Friday, 8AM to 6PM, and ready to help keep your truck running strong.
Services In Converse, TX, Near San Antonio
Your trucks work hard — and they deserve maintenance and repairs that work just as hard. At GTC Services, we handle all types of heavy-duty services to keep your vehicles safe, efficient, and compliant. Our experienced technicians use advanced diagnostic tools and proven methods to ensure every repair meets your operational needs. Each service is designed to meet the demands of modern fleets and long-haul operators across Converse, San Antonio, and the surrounding region.
Fleet Services
Do you manage a fleet and need reliable service to keep your trucks moving? At GTC Services, we provide professional fleet services in Converse, TX designed to minimize downtime, reduce costly breakdowns, and keep your vehicles road-ready at all times.
DOT Inspection
Are you ready for your next DOT inspection? At GTC Services, we help keep your trucks compliant and on the road with professional state and federal inspections you can trust.
General Diesel Repair
Need fast, no-nonsense general diesel repair that keeps your trucks earning? We diagnose, fix, and return your heavy-duty vehicles &equipment to service quickly—so you stay on schedule instead of sitting in a bay across San Antonio routes.
Bus Repair
Is your bus struggling with electrical problems, battery issues, or breakdowns that disrupt your schedule? At GTC Services, we provide dependable bus repair to keep shuttle buses and commercial buses on the road and serving passengers across San Antonio and beyond.
Preventive Maintenance
Want to avoid costly breakdowns and keep your trucks running longer? Preventive maintenance gives you the peace of mind that your fleet is safe, compliant, and ready for the road.
Heavy Equipment Repair
Need fast, reliable heavy equipment repair that keeps your crew moving? You’re in the right place. This page explains what we fix, how we work, and why owner-operators and fleet managers across San Antonio trust GTC Services for uptime.
RV Repair
Got an RV problem that’s cutting into your plans? From chassis to coach systems, our RV repair team gets you back on the road fast—with work you can trust.
Truck Welding & Fabrication
Looking for reliable welding and fabrication that keeps your trucks and trailers on the road? At GTC Services, we deliver durable, precision repairs and custom builds designed to withstand the demands of heavy-duty work.
Specific Modifications
Looking to get more out of your truck? Specific modifications can transform the way your vehicle performs, handles, and supports your business. At GTC Services, we provide heavy-duty modification solutions designed to keep your trucks reliable, powerful, and tailored to your needs.
Hydraulics Repairs & Services
Is your truck experiencing hydraulic issues that slow down your workday? At GTC Services, we provide professional hydraulics repairs and services designed to keep your heavy-duty truck reliable and safe.
Trailer Repair
Is your trailer causing downtime with unexpected breakdowns? At GTC Services, we offer dependable trailer repair services to keep your trucks and trailers moving safely in and around San Antonio.
Truck Parts & Accessories
Need reliable truck parts and accessories to keep your trucks running strong? At GTC Services, we know downtime costs money. That’s why we provide durable parts and quick service, helping drivers and fleets in Converse and San Antonio stay on the road without unnecessary delays.
Our Customer's Testimonials
Sheena
We have used this shop before. Will recommend their services to anyone. The customer service from the front to the mechanics is top tier!
Ruth
My truck needed the California inspection and Scott was great. Quick and a really nice guy. I was in and out in a flash.
Darryl
Quoted their work, exceeded quality expectations, met their timeline, then stuck to original price quoted....... PRICELESS!!!!