Is your truck experiencing electrical issues or warning lights you can’t pinpoint? At GTC Services, we provide diagnostics and electrical repair that gets you back on the road quickly and with confidence.
Electrical Repair & Diagnostic Services in Converse, TX, Located Just Outside San Antonio
Electrical problems can shut down your operation faster than almost anything else. From alternators and batteries to wiring issues and fault codes, even small electrical failures can lead to breakdowns, downtime, or safety hazards. Our team uses advanced diagnostic tools and fault code readers for trucks to accurately identify the root of the issue.
Whether you’re dealing with a failed alternator repair, a weak battery repair, or complex electrical troubleshooting, we’ve got the expertise and equipment to get it fixed right. Electrical issues don’t just affect your ability to start or run — they also impact your starter repair, lighting systems, and in-cab electronics. By performing thorough diagnostic service checks, we make sure no problem goes undetected.
Signs you may need electrical or diagnostic service include:
- Difficulty starting or repeated stalling
- Dashboard warning lights or engine codes
- Dimming or flickering lights
- Dead batteries despite recent replacement
- Strange electrical smells or wiring issues
If your truck is showing any of these signs, our diagnostic process will find the problem before it turns into costly downtime.
What Makes Us Different
At GTC Services, we know downtime costs money. That’s why we deliver same-day service whenever possible, ensuring your truck gets handled quickly without sacrificing quality. When you bring your truck to us, you can trust that it won’t sit around waiting — it gets taken care of right away.
We also provide custom electrical and diagnostic work that many shops won’t touch. Our team takes pride in solutions that fit the unique needs of your truck, whether you’re an owner-operator or managing a large fleet.
Our partnerships strengthen the value we bring. We’re affiliated with IronLite Trailers, giving our customers access to specialized trailer solutions. Through our partnership with Blackstone, we provide convenient fleet parking, office rentals, and bay rentals, making it easier for fleet managers to coordinate repairs. And as part of the Guerra Truck Center family, we carry forward decades of experience in heavy-duty truck repair across the San Antonio region.
Simply put, our turnaround time, quality of custom work, and network of trusted partners make us the clear choice for electrical and diagnostic repair in Converse, San Antonio, and beyond.
Contact Us About Electrical Repair & Diagnostic Services Now: Call 210-648-0316!
If your truck is showing electrical issues or fault codes, don’t wait for it to fail on the road. Call us today at 210-648-0316 to schedule your electrical repair or diagnostic services and get back on the road with confidence.
FAQs
What Areas Do You Serve?
We are based at 12930 IH 10 E, Converse, TX, near IH 10 and FM 1516. But we also proudly serve the following areas: San Antonio, TX; Schertz, TX; Universal City, TX; Austin, TX; Selma, TX; La Vernia, TX; and New Braunfels, TX. Our 60-mile service radius ensures fleet managers and owner-operators in these communities have reliable access to trusted electrical and diagnostic support.
What Does a Full Diagnostic Test Consist Of?
A full diagnostic test involves connecting a scanner or diagnostic tool to your truck’s onboard computer. This process allows technicians to read fault codes, monitor system performance, and identify failing components before they cause breakdowns. Tests often include checks on the electrical system, sensors, engine modules, and emissions controls, ensuring trucks in the San Antonio area stay compliant and reliable.
Can Electrical Wiring Be Repaired?
Yes, electrical wiring can often be repaired if the issue is addressed before major damage occurs. Repairs may involve splicing and soldering, replacing connectors, or rerouting harnesses to avoid future stress points. In cases where wiring is too worn or corroded, complete replacement ensures long-term reliability and prevents further downtime for trucks operating in Converse and San Antonio.
Get Back On The Road Faster!
Don’t let electrical issues or fault codes hold your truck back. Call 210-648-0316 now to schedule an appointment with GTC Services in Converse, TX. Serving fleets and owner-operators across the San Antonio area, we’re here to minimize downtime and keep your trucks working as hard as you do.
Repairs Located Just Outside San Antonio In Converse, TX
Whether you’re an independent owner-operator or managing a full fleet, your truck’s performance is your livelihood. Our experienced technicians handle a wide range of repair needs for heavy-duty vehicles, using advanced diagnostic tools and high-quality parts to ensure lasting results. Every repair is performed with the same goal in mind: minimize downtime and maximize reliability for every mile your truck runs across San Antonio and beyond.
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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!!!!