Gerald Kosub Transmission Service Inc.

Gerald Kosub Transmission Service Inc. Transmission shop established in 1996 known for honest advice, transparent pricing, friendly service and fair estimates.

Serving Bexar county, Wilson county and surrounding areas. Our services are based on a positive attitude, professionalism and workmanship, with top quality materials for your transmission repairs. We pride ourselves on teamwork, respect, and a mutual commitment to high standards. Our company is supported by many experienced technicians as well as a very knowledgeable and loyal office staff. Togeth

er, we offer the best in customer satisfaction at an affordable price. We offer custom high performance rebuilds catered to your specific needs diesel trucks, hot rods, and more.

Roses are red,Violets are blue,If your transmission’s slipping…We’ve got you 😉Happy Valentine’s Day! We’re grateful for ...
02/14/2026

Roses are red,
Violets are blue,
If your transmission’s slipping…
We’ve got you 😉

Happy Valentine’s Day! We’re grateful for our amazing customers and the trust you place in us year after year.

Today we had the privilege of watching the annual Trail Ride to the San Antonio Stock Show & Rodeo pass by our shop. It’...
02/12/2026

Today we had the privilege of watching the annual Trail Ride to the San Antonio Stock Show & Rodeo pass by our shop. It’s always great to see our community come together to honor the traditions and heritage that make South Texas special. We’re proud to be part of an area that values its history and supports events that bring generations together. Cody Johnson said it best “and you can’t buy that kind of dirt cheap”

A few of our transmission rebuilds this week on 8L90E, 6L90E, 6L80E as well as 10R80 and 6F55 models.
12/09/2025

A few of our transmission rebuilds this week on 8L90E, 6L90E, 6L80E as well as 10R80 and 6F55 models.

2019 Ford Expedition transmission rebuild 10R80.
12/09/2025

2019 Ford Expedition transmission rebuild 10R80.

First the 6L transmission issues and now the 8L issues. We have been seeing these problems since 2007. Most widely sprea...
05/10/2022

First the 6L transmission issues and now the 8L issues. We have been seeing these problems since 2007. Most widely spread in 2013 and newer models.

Only vehicles purchased after March 1, 2019 are involved in this class-action suit.

It's a beautiful day today in south Texas .
02/04/2022

It's a beautiful day today in south Texas .

02/04/2022

We are open today normal hours. Day two of winter storm 2022.

Not only do we need tools from our tool boxes. We also need up to date diagnostic equipment and information. Vehicles to...
03/09/2021

Not only do we need tools from our tool boxes. We also need up to date diagnostic equipment and information. Vehicles today are more complex than ever before and we are dedicated to finding the accurate repair for your vehicles transmission!

02/11/2021
2016 Chevrolet 2500 6L90 transmission rebuild with billet lid HD torque converter
02/11/2021

2016 Chevrolet 2500 6L90 transmission rebuild with billet lid HD torque converter

Address

7455 US Highway 87 E
San Antonio, TX
78263

Opening Hours

Monday 8am - 5:30pm
Tuesday 8am - 5:30pm
Wednesday 8am - 5:30pm
Thursday 8am - 5:30pm
Friday 8am - 5pm

Telephone

+12106484991

Website

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