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.
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!!!!