Transmission Shop in San Antonio, TX

ASE Certified Transmission Specialists at Auto Service Experts

Transmission repair begins with the correct diagnosis of the underlying source of the problem. Our ASE Master Technicians have been specializing in transmission rebuilding and repair in San Antonio for over 20 years. We combine extensive experience and specialized training with a true passion for what we do. Our shop is equipped with state of the art equipment and technology to help us quickly and accurately diagnose your vehicle. Through extensive internal, external, and computer diagnostic systems, we can pinpoint the cause of a problem. This ensures that we make only the necessary repairs, and get the job done right the first time. We have the proper training and equipment to rebuild or repair transmissions on all makes and models of cars, trucks, and SUVs. This includes automatics, CVTs, hybrid vehicles, diesels, standard/manual transmissions, and clutch repair.

Our attention to detail and commitment to excellence has earned us a local reputation for honesty, integrity, and quality. Auto Service Experts has been one of the most trusted names in San Antonio transmission repair for over 13 years.

3 Year/36K Mile Warranty on Repairs and New, Used, & Rebuilt Transmission Replacements, Parts & Labor!

Certified Transmission Specialist Rebuilding Chevrolet Truck Transmission at Auto Service Experts

We stand behind our work with the absolute best warranty in the automotive industry. We understand that this type of repair is a major decision, and can be a big expense. Our long-standing relationships with parts suppliers allow us to quickly get the right parts at the best prices. We use only high-quality parts, and guarantee our work to stand the test of time, ensuring that your investment is a lasting one.

Transmission Replacement and Diesel Engine Replacement on Ram 2500

Our goal is to build lasting relationships with our customers. Through integrity and exceptional customer service, we strive to earn the confidence and respect of you and your family. Our friendly mechanics will take the time to explain the necessary repairs for your vehicle in a way that you don't have to be an expert to understand. We are happy to answer any questions or concerns you may have, and help you make the best repair or rebuild decision for your vehicle. We will always discuss any decisions about your car or truck with you before beginning repairs.

Trust the Experts...

...Know Before You Owe!!!

Read our Blog for information on maintenance, problems, operation, and transmission rebuild cost. We also provide tips on how to choose a reliable, honest transmission repair shop in your local area. 

FREE Transmission Checks!

To make your experience as comfortable and convenient as possible, our shop offers:

FREE Transmission Diagnostics
ASE Certified Master Technician on Duty at All Times
Towing Available
FREE Shuttle Rides
If you would like to take advantage of our ride service, please let us know when you schedule an appointment.
Two Forms of Auto Repair Financing
We offer financing through the Synchrony Financial Car Care One Card or the One Road Lending program. Apply easily online, over the phone, or in our office.
Affordable Rental Car Access
Comfortable customer lounge area complete with complimentary snacks, beverages, and WiFi.

Our full-service automotive garage is conveniently located on the access road of N Highway 281. We are just South of Bitters Rd., and North of Wurzbach Pkwy. To schedule an appointment at your convenience, give us a call or send us an email. Walk-ins are also welcome, so stop by anytime!

We Greatly Appreciate Your Business!

Our business is built on the satisfaction of our customers, and our goal is to exceed your expectations! The greatest compliment we can receive is a recommendation to friends and family. To see what our customers have to say about us, visit us on: Google, RepairPal, Facebook, Yelp, CitySearch, InsiderPages, or see our A+ Rating by the Better Business Bureau!

Everything You Need to Know About Transmissions:

Transmission Repair, Rebuilding, and Replacements
Transmission Diagnostic
Transmission Service

Transmission Rebuild and Repair in San Antonio, TX

Transmission Repair vs. Transmission Rebuilding - What is the difference, and which is best for your vehicle?

Transmission repair or transmission rebuild? Many factors play into this decision such as the type, age, mileage, and condition of your vehicle, as well as the specific problems you are experiencing. The best way to decide is to have a specialist at Auto Service Experts San Antonio transmission shop perform a complete inspection. Our ASE certified master technicians will provide you with a full report of the overall condition, as well as the condition of specific internal components. We can then discuss the best options with you, and help you make the right repair decisions for your vehicle. Just ask about our FREE transmission checks and multilevel diagnostic services!

AT Rebuild on 2007 Mazda 3 by ASE Certified Transmission Specialists

Regardless of whether your vehicle is in need of minor repair, or a complete custom rebuild, it is extremely important to choose the right shop. Our latest blog article discusses how to find the best transmission repair & service center in your area and provides tips on how to evaluate a mechanic or repair facility.

Transmission Repairs

In transmission repair, rather than disassembling and rebuilding it completely, only a minimal portion of the unit is fixed or replaced. Fixing a leak, or replacing a single broken component would be examples of times when a partial repair may be more cost effective or preferable to a complete overhaul.

However, components wear out at different times, and replacing or fixing only certain ones does not guarantee that other components will not fail. When considering repair vs. rebuilding, we take into account the overall condition of your transmission which is affected by several factors including maintenance and the degree to which the recommended service and fluid change schedule have been followed.

Remanufactured, Overhauled, or Rebuilt Transmissions

Rebuilt Transmissions are removed from the vehicle and completely custom rebuilt by a certified transmission specialist. A rebuild is also commonly referred to as an overhaul, or a reconditioned or refurbished transmission. The term "remanufactured" means essentially the same thing, except that it is rebuilt in a factory rather than a repair shop. Rebuilding is much less costly than new transmission replacement and provides "like new" performance. 

Our skilled technicians completely disassemble, thoroughly inspect and clean the transmission, and remove and replace all damaged or worn hard parts. All soft parts including seals, gaskets, bands, and clutches are also replaced before the unit is reassembled and reinstalled. More durable components such as the drums, gears, casings, and converters typically just need to be cleaned rather than replaced.

We guarantee our rebuilt transmissions to meet or exceed factory OEM standards, and back our work with the best auto repair warranty available in San Antonio. 

*Auto Service Experts backs transmission rebuilds with a complete 3 Year, 36,000 Mile Warranty on parts and labor.

Transmission Components:

Transmission Soft Parts – clutch components, gaskets, valves, O-rings, seals, bands, and filters. These parts experience a lot of wear and tear and are all replaced during a rebuild.
Transmission Hard Parts – converters, pumps, shafts, drums, gears, and casing. These parts are more durable and do not have to be replaced as often.

Certified Used Transmission Replacement

Used Transmission Replacements

There are some cases when it may make more sense financially to opt for a used transmission with relatively low mileage. If the cost of a new or rebuilt unit is more than the value of the vehicle this may be a good option to keep you on the road without having to spring for a whole new car or truck. Many times transmissions from vehicles which were totalled due to body damage are still in good condition and are affordably priced. Pricing, availability, and quality varries greatly, so be sure to opt for a certified used transmission if you choose to go this route. Auto Service Experts backs most used transmission replacements with a 1 yr/12,000 mile warranty.

Transmission Diagnostics

FREE Transmission Checks by the Specialists at San Antonio's Top Transmission Repair Shop

The diagnostic specialists at Auto Service Experts can often pinpoint the source of your transmission problem without having to completely remove and disassemble it. Our state of the art computer diagnostic systems allow us to locate damaged sensors and identify internal issues that affect your transmission functioning. Our 21 point, multi-level Transmission Inspection Service is designed to accurately diagnose your car or truck's transmission problem. We ensure that only the necessary parts are replaced, and your transmission is properly repaired or rebuilt to factory standards the first time. Our internal, external, and computer diagnostics allow us to catch minor problems before they cause further damage to your automobile, saving you time and money!

Electrical Diagnostics for Transmission Repair on Toyota Prius Hybrid Car

In-Depth Diagnostic

Expert diagnostics involve an intricate understanding not only of how the mechanical components operate, but also how they are tied in with the computer and electrical systems which control them. By scanning the Transmission Control Module for trouble codes, we can get a good idea of where to look for the problem. However, computers and scanners do not repair transmissions, technicians do! Trouble codes narrow down the area in which you can expect to find the source of the problem but do not tell you what exactly is causing the malfunction.

Once a mechanic knows where to look, it still takes a great deal of expertise to properly diagnose and repair a transmission. Picture a house with 100 rooms in it. A diagnostic scanner can tell you which room to look in for a problem and in this room, you have several components. It does not tell you which component in that room is malfunctioning, or whether it is due to auto electrical issues such as improper wiring or auto mechanical problems such as a damaged part.

Transmission problems can have many different causes and may involve one or more other automotive systems. Because modern transmissions are controlled by a computer which also controls several other systems, a problem in another area such as the engine or cooling system can cause them to function improperly. While it is fairly straightforward to determine that the system is not operating properly, it requires deeper investigation to determine why.

Computer Diagnostic Scanner

Our electrical and automotive diagnostic expertise allows us to pinpoint the source of the problem while avoiding any unnecessary repairs. Relying solely on trouble codes to diagnose a vehicle without further investigation will often end up in replacing unnecessary parts, and many times not even correct the original issue.

For example, when the transmission is not shifting on a Chrysler product, a diagnostic scanner will display a code p0700 which tells you only that you have a fault in the transmission. Many times, failure to shift happens because the output speed sensor fails to communicate to the transmission which gear to be in, causing it to go into fail safe mode. This costs around $120 fix, and does not require a complete transmission rebuild or overhaul! 

If there is a simple fix or minor repair which can solve the problem, we will find it and will not sell you a new transmission or any parts or services that you don’t truly need. Our business and reputation are built on honesty, integrity, and complete customer satisfaction.

Discuss your options with an ASE certified transmission repair technician:

After diagnosing your vehicle, we will provide you with a full report. In the event that your vehicle requires transmission repair, we are here to help you make the best decision for your car or truck. Our ASE certified specialists will discuss with you the benefits of transmission rebuilding and transmission repair, and which solution is most appropriate for your vehicle. We are always happy to talk with you about any questions or concerns you may have regarding your vehicle. We take the time to fully explain the condition of your car's transmission, as well as the necessary repairs or recommended transmission service in a way you don't have to be an expert to understand.

Transmission Fluid Change Service

Transmission service is the number one way to prevent premature failure! It helps the system to last longer and provide peak performance. Transmissions are the most essential, complex component of an automobile’s engine. They are responsible for transferring power from the vehicle’s engine to its wheels. Their function is vital to the engine, so timely service is a necessity, not an option. If you neglect to have your transmission serviced for long enough, you will be looking for a trustworthy transmission shop near you to repair or rebuild it.

Transmission Fluid Replacement on Jeep

Why Change Transmission Fluid Regularly?

Transmission fluid serves several important functions. It cools the system and prevents the component from overheating. It cleans the system and prevents contaminant buildup from inhibiting operation. It also functions as a lubricant which is important in protection from excess friction, wear & tear on internal components.Transmissions take a lot of wear and tear under normal operating conditions, but this can be worsened by lack of proper auto maintenance. Over time, the fluid becomes dirty or contaminated with debris. It can also deteriorate or leak out to a dangerously low level. These conditions can cause many problems such as transmission slipping, difficulty shifting, sticking in neutral, and even complete failure.

Transmission fluid contains special detergents and anti-corrosive lubricants which deteriorate over time. As the fluid breaks down and provides less lubrication and protection, components begin to wear against one another causing metal shavings and component particles to break off. These contaminants are then carried through the system creating clogs which can block certain parts of the transmission from receiving adequate lubrication and prevent the gears from shifting properly. Moving parts can no longer operate freely, and this eventually leads to damaged components. 

Simply having the fluid changed at recommended intervals can prevent many of these problems, reduce the chance that you will require major repair, and effectively increase the lifetime of your vehicle. Transmissions are meant to last a long time, but like all vehicle components, they eventually wear out. How well you maintain it, as well as your driving habits and conditions, affect transmission lifetime and performance.

Strenuous driving conditions cause excess heat and friction. This can lead to premature transmission failure. Under these conditions, the fluid wears out more quickly so your vehicle may require AT service at more frequent intervals. In this case, anything other than highway driving is considered strenuous, including:

Stop & go traffic
Towing
Hauling heavy loads
Extreme heat/cold
Air pollution
Steep inclines
Poorly maintained road surfaces

This Transmission was rebuilt due to damage which could have been prevented with proper maintenance.

Ask one of our ASE certified mechanics about our discount transmission service coupon!

Automatic Transmission Service

Automatic transmissions (AT) are hydraulically operated systems. This means that their operation depends on AT fluid which travels through tiny passageways and places pressure on bands in order to shift gears. AT fluid also lubricates, cleans, and cools the inside of the system. In AT systems the transmission fluid and filter are located within an oil pan.

The Automatic Transmission Rebuilders Association states that roughly 90% of failures are due to transmission overheating easily avoided by replacing transmission fluid. 

Service replaces the old, contaminated, and worn fluid with fresh fluid. This helps to clear clogged passageways and restores adequate protection for moving internal components. It also replaces the clogged filter with a new one to help maintain the condition of the new fluid. Because automatic transmission operation relies so heavily on fluid, following the factory maintenance schedule for your vehicle is the most important step you can take to preserve performance and lifetime. 

Service Includes:

Removing pan
Cleaning pan and checking for leaks
Replacing filter/cleaning screen
Replacing pan gasket
Reinstalling pan
Draining fluid and refilling it to the proper level with new, high-quality fluid according to vehicle-specific manufacturer recommendations.
*Service does not replace all the fluid, as some remains trapped within the working components such as the torque converter, and cooler lines.

Note: On front wheel drive vehicles, transmission service includes differential service. In these vehicles, the differential is part of the transaxle so there is no need to schedule a differential fluid change service separately. However, in rear wheel drive, all wheel drive, and four-wheel drive trucks and cars, differential service should be performed according to the schedule in your owner's manual. On many makes and models, the intervals between differential service are quite long, so it can be easy to overlook. Auto differentials are designed to carry a heavy workload and should last you a very long time. Lack of maintenance can cause irreversible damage. Differential service prevents repairs or replacements which could have easily been avoided.

Manual Transmission Service

Manual transmissions (MT) are not as complex as automatics but are just as important to properly maintain. While standard transmissions are not hydraulic systems, they still require fluid to lubricate, clean, and protect internal system components. MT fluid contains specialized detergents, lubricants, and anti-corrosive additives which wear out with normal use. MT service drains old, worn fluid and replaces it with fresh fluid which is able to properly clean & protect the moving components. Standards are not equipped with fluid filters. Different MTs require different fluids (such as heavy gear oil, automatic transmission fluid, or motor oil) so it is important to follow manufacturer recommendations. This will reduce the possibility of having to have your manual transmission repaired due to lack of maintenance.

Transmissions and Fuel Economy

The condition of your transmission and how well it operates affects fuel economy. Different sized gears ensure that the engine’s power is used as efficiently as possible at different travel speeds and under differing driving conditions such as climbing inclines and traveling downhill. Engines have an ideal speed zone referred to as the power band. The more gears a transmission has, the better it is at keeping engine speed within the power band zone under different operating conditions. This allows for faster acceleration, hill climbing, more efficient towing, and higher max speeds while maintaining the best possible fuel economy. Modern automatic transmissions (AT) are becoming increasingly complex. 5 speeds and 6 speeds are most common, while many others have even more. As the number of gears increases so does the complexity of the design. With more moving parts to protect, transmission service is more important than ever.

Service Recommendations:

Many common problems can be avoided by having your fluid changed routinely and having a certified ASE mechanic perform a thorough transmission inspection at recommended intervals. Different makes and models of cars and trucks require transmission service at different intervals, so it is important to follow the manufacturer’s maintenance schedule. You can find this information by consulting your vehicle’s owner manual or asking an Auto Service Experts specialist. Visit our Blog for more transmission maintenance tips to improve performance and advice on preventing common causes of transmission failure.

Always use the proper transmission fluid for your vehicle. Manual transmissions require a different type of fluid than ATs or CVTs. Likewise, different makes and models have very different specifications, and using the wrong one can cause major problems!

Fluid Change Schedules:

Transmission fluid change is typically required every 2 years or 24,000 miles. It may be necessary to drain and replace your fluid more often if it becomes contaminated, discolored, or low. Contaminated fluid causes the transmission to work harder than necessary, have shifting or slipping problems, or even overheat.

Keep in mind that the life of the fluid decreases as it is exposed to extremely high temperatures (over 175 degrees Fahrenheit). Harsh driving conditions such as inclement weather, hauling heavy loads, or driving in mountainous terrain can place more strain on the transmission which causes internal temperatures to rise, and fluid to deteriorate faster. Under these conditions, you should have your fluid checked and possibly replaced more often. If you have questions regarding the proper service schedule for your particular vehicle and driving habits, feel free to call and speak with one of our ASE certified transmission mechanics - we are always happy to help.

Proper Fluid Level

It is a good idea to have your transmission fluid level checked periodically, between regular service intervals. Low fluid may alert you to the presence of a leak. If caught early on, leaks can be repaired before the fluid becomes dangerously low and causes major damage. 

It is also important to avoid overfilling. In most cases, overfilled fluid will not cause damage. Excess fluid is usually pushed out through the vents, creating a big (and smelly) mess. In cases of extreme over filling, however, fluid may reach the clutches and cause them to malfunction. Internal gears are designed to operate above the fluid level. Too much fluid splashes around creating air bubbles, foam, and excessively high pressure inside the gearbox. This pressure can cause seals and components to break. It can also push internal components out of alignment causing them to grind against one another and creating additional heat and friction. High temperatures decrease the lifetime and effectiveness of the fluid, which means moving components are not adequately lubricated and protected. In extreme cases, these conditions lead to oil starvation, transmission overheating, and possibly failure.

Keeping up with regular maintenance, and noticing minor issues before they become a major repair can save you a great deal of time and money. Pay attention to any problem warning signs such as transmission fluid leaking in the driveway, and bring your car to Auto Service Experts Transmission Repair Shop for a FREE check as soon as you notice any problem.