Martinez Tire & Auto Center logo
At our 12040 O'Connor Rd location

Transmission Shop in San Antonio, TX

1,310 Google reviews · 3 locations, walk-ins welcome

Martinez Tire & Auto Center is a San Antonio transmission shop at our O'Connor Rd location. We diagnose shifting problems, service transmission fluid, and repair automatic and manual transmissions in cars and trucks. You get a clear answer on whether you need service, a repair, or something bigger before any work starts.

Martinez Tire & Auto Center

Transmission Shop

Walk-ins welcome. No appointment needed.
Hablamos español.

Catch it early

Transmission problems are expensive when they are ignored and often manageable when they are caught early. A lot of what feels like a failing transmission turns out to be low or burnt fluid, a sensor, or a software issue.

Signs worth getting checked:

  • Slipping, where the engine revs but the car does not accelerate like it should
  • Hard, late, or delayed shifts
  • A shudder or clunk when shifting
  • Red fluid leaking under the car
  • A burning smell, or a transmission warning light

Service or repair

Our transmission work falls into two services. Transmission service is maintenance, mainly fluid and filter changes on the schedule your vehicle calls for. Transmission repair is fixing something that has already gone wrong, from leaks and sensors to internal problems.

San Antonio heat and towing are both hard on transmission fluid. If you pull a trailer, drive in stop and go traffic, or have a truck with high miles, it pays to stay ahead of fluid service. Our vehicle diagnostics service reads transmission codes when a warning light comes on.

Where to bring it

Transmission work is done at 12040 O'Connor Rd on the Northeast side. Call and describe what the car is doing, and we will tell you what to expect.

Questions we hear

Does a slipping transmission always need a rebuild?

No. Low fluid, the wrong fluid, a sensor, or a solenoid can all cause slipping. We check the simple causes first.

How often should transmission fluid be changed?

It varies a lot by vehicle. Check your owner's manual, and use the severe service interval if you tow or drive in heavy traffic and heat.

Can I keep driving with a transmission problem?

Driving on a slipping transmission can turn a small repair into a big one. Get it checked soon.

Transmission Shop at our 12040 O'Connor Rd location

This is the Martinez location that does it. Walk in, or call (210) 646-8911 first to check the wait. Hablamos español.