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Guaranteed Transmission
Expert transmission repair with honesty and a 3-year warranty—your trusted auto solution in San Antonio.
4.2(5 reviews)
auto-repair
$$$
Expert transmission repair with honesty and a 3-year warranty—your trusted auto solution in San Antonio.
Guaranteed Transmission is a premier auto repair shop in San Antonio specializing in transmission diagnostics, repairs, and replacements. With a 4.8-star rating, we pride ourselves on honest, transparent service and expert technicians like Tyler and Hector who take time to explain issues and solutions. We offer a 3-year warranty on transmissions and handle everything from routine maintenance to complex repairs for personal and fleet vehicles. Our commitment to quality and customer peace of mind makes us a top choice for reliable car care.
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Comprehensive inspection and honest assessment of transmission issues to identify root causes.
Expert repairs and full replacements with high-quality parts and a 3-year warranty for durability.
Routine services like fluid changes and seal replacements to extend transmission life and prevent failures.
Specialized repair and maintenance for company trucks and commercial vehicles to ensure reliability.
Free consultations to review quotes from other shops and provide transparent advice on repair options.
Spoke to Tyler about the problem I’ve been experiencing with my car, he took the time to listen and gave me suggestions on what to do. After checking my car Tyler was helpful, and honest in diagnosing my car. No one has found the key problem in over a year and I have spent lots of money to only find the problem still persists.Thank you Tyler, you gave me some much needed peace of mind, I highly recommend gts transmission.
Really recommend Guaranteed Transmission. Tyler was super helpful and went out of his way to talk with me and give his opinoin on a quote I got from the dealership. I originally had my car towed here after my trans went out only to realize I had two months left on my warranty. They were super nice about it and I had the car towed from here to the dealership. I then went back and spoke with Tyler after my service recommendation came back from the dealership and Tyler spent time with me to explain what the dealership recommended and gave me some questions to ask them. These guys seem honest about the work they do, that is always my biggest worry with shops nowadays. They certainly have my business moving forward.
This place is legit and honest. We take our company trucks here for all major jobs
I brought a 2015 Ford Explorer didn't realize I would have transmission issues. I was referred to Hector and he fixed the problem, after he did the work I was able to travel to Virginia and NC and all the way back to San Antonio with no problem. Thanks again Hector you're the best in the West.
Avoid. I had to replace the left front suspension parts where THEY ZIP TIED THINGS like the torn CV boot.. I guess they tried to keep the boot on long enough for me not to notice their shoddy work? I also had to replace a crushed tie rod, my ABS lights are on and the sensors weren't bolted back on - you guessed it, more zip ties. The car shifts in OD like the tranny is skipping but i was told its my throttle body. No diagnostics, just a punt back to someone else. It's hard to find good and honest mechanics. I'd have paid to replace the boot and bushing, but now i had to be surprised when the CV axle died from dirt ingestion.. Thanks, guaranteed transmission. Thanks a lot. I have been fighting with my Buick for a while and then the transmission went out; it would no longer shift from first to any other gear than reverse. The garage was very upfront with any costs to diagnose and what the process was and once it was completed, they called me to the shop to bear witness to what I already had suspected. The trans needed replaced - long story short, I have the supercharged Park Ave and a while ago the trans was replaced but with the standard model. Anyways, Hector showed me exactly where it was worn, why, and how, then explained why the cost was what it would be. Totally worth it knowing that the engine was in great shape, so why not try another decade with a replaced trans? Turns out that after the replacement, an oil change, and a few seals the oil pressure decided to not work. The transmission was amazing however the car now made knocking noises! I requested they have a look - no arguments, they took it right back, recommended and then dropped the pan and cleaned out the oil and delivery channels. This resolved those issues and now we're back to a fully functional Buick ready for another 10 years (hopefully). Three year warranty on the transmission and wonderful, upfront, and trustworthy service. 100% recommended. EDIT: They told me battery was dead so I agreed to let them replace it. They did, but whoever did it was lazy and had poor work. They stripped the mounting bolt due to a cross thread and instead of stopping, removing the bolt and trying again, they just zip tied the battery into place. The negative terminal on the battery wasn't tight and was causing starting issues, so I had to remove the entire tray and all hardware, saw it off and replace it. Shoddy work especially for how much we paid. If I hadn't been as mechanically inclined as i was, this would have been another charge for them to figure out. Transmission is great though.
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