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Mon-Fri: 8AM – 4:30PM
Saturday: 8AM – 2PM

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Car Transmission Repair

Transmission Service and Repair Shop

Sornoso’s Auto Repair has been serving our community in West Covina for over 30 years. Our team of mechanics is skilled at repairing manual and automatic transmissions to keep your car running well wherever you need to travel. We offer regular transmission services like transmission flushes and more intensive repairs including transmission rebuilds. To get started, book an appointment through our website or give us a call at 626-966-0404.

What is a Transmission?

Your transmission is one of the most important components in your vehicle. Its primary job is to transfer power from the engine to the wheels and it does this by switching between gears. There are two main types of transmissions: manual and automatic. A manual transmission has five or six forward gears that the driver shifts between using what is called a “clutch.” An automatic transmission has a torque converter that switches between gear so the driver does not have to.

Car Transmission Maintenance
Car Transmission Fluid

Fixing a Transmission Fluid Leak

Transmission fluid is necessary to keep your transmission running smoothly. If you find yourself needing to top off your transmission fluid each month or you see puddles of transmission fluid under your car, this can indicate that you have a transmission leak. A leak happens when there is a crack in a gasket or seal of your transmission or there is a loose bolt or puncture in your transmission pan. A transmission leak can lead to:

High temperatures
Low pressures
Damage to discs and gears
Transmission failure

If your transmission is leaking, it’s best to get it addressed as soon as possible in order to avoid costly repairs.

Replacing Transmission Parts

Your transmission is made up of many parts that work together. When one part stops working your entire transmission can have problems. Some individual components that encounter a lot of friction may need to be replaced more often than others. These include:

Bands and plates
Torque converter
Seals and gaskets

If your transmission isn’t working properly, bring it in to our shop. We will identify the problem part and replace it so your transmission keeps running well.

Replacing Car Transmission Parts
Transmission Maintenance

Rebuilding Your Transmission

Sometimes replacing a part in your transmission isn’t enough to fix it and a transmission overhaul is needed. In this cause, we can rebuild your transmission by removing and disassembling the entire transmission. During this process we clean and inspect each part for wear and tear. Then, we replace any worn out or damaged parts.

Servicing Your Transmission Fluid

Topping off and changing out your transmission fluid can fix and prevent many transmission problems. Transmission fluid is used in all automatic transmission and some manual transmissions (“transmission oil” is sometimes used). When your transmission fluid is too low, it can lead to transmission problems. It’s important to check your fluid levels and the quality of your fluid regularly. Your transmission fluid should smell neutral and be mostly clear. If it is opaque or smells foul this means that your transmission needs repairs.

Transmission Repair at Sornoso’s

Keep your transmission running right with our team at Sornoso’s Auto Repair. We have experience maintaining manual and automatic transmissions in all types of vehicles including SUVs, sports cars, sedans, and more. We offer expert service for minor repairs and replacing parts as well as rebuilding transmissions. To schedule an appointment, give us a call at 626-966-0404 or visit us online.

We are proud to announce that all our service technicians are ASE Certified.


Sornoso Automotive
925 N Citrus Ave
Covina, CA 91722-2736

Working Hours

Mon-Fri: 8am-4:30pm
Saturday: 8am-2pm
Sunday: Closed