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

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Car Transmission

Transmission Service and Repair

Your car’s transmission is complex to say the least. However, it’s one of the most important parts of your car and requires regular attention. At Sornoso’s Auto Repair, we will service your transmission so it stays healthy and perform repairs whenever necessary.

Maintaining Your Transmission

Transmissions wouldn’t function right if it weren’t for transmission fluid. This fluid serves two important roles.

1) Lubricates the gears of the transmission.

Whenever you shift gears the transmission fluid makes this feel seamless. Additionally, the fluid keeps the transmission cool and prevents it from overheating.

2) Maintains hydraulic pressure

The transmission fluid also provides the right pressure to transfer power between your car’s engine and the transmission.

Transmission Gear Box
Hand pouring transmission fluid

When Should You Change Your Transmission Fluid?

Every car is different. We suggest looking at your owners manual for the manufacturer’s recommendations about when to change the transmission fluid. However, we can always provide suggestions when needed. It’s important to change the fluid regularly for the following reasons:


  • Metal chips off gears and gets into the fluid
  • Additives and detergents in the fluid will gradually deplete
  • Sludge and varnish can gunk up the fluid

When Does Your Transmission Need Repairs?

Transmissions can cost thousands of dollars to replace. By taking care of your transmission, you can make it last a long time. If your vehicle is experiencing any of these issues, don’t hesitate to take your vehicle to our shop.

  • Check engine light is on
  • There is a burning smell inside or outside of the car

Flushing Your Transmission

Every so often you should flush your transmission. When you bring your vehicle into our shop for a transmission flush, we will inspect your transmission pan for debris (you’d be surprised what we find in there), switch out the transmission filter, change out the transmission fluid, and check for signs of corrosion.

  • Your car is leaking a reddish fluid
  • Your gears are shifting loudly and are grinding or shaking
  • Your car won’t move
  • You have issues with the clutch
Repairing Transmission
Mechanic draining automatic car transmission

Is Your Transmission Leaking?

There are a lot of moving gears in your transmission – but we don’t need to get into all of that. What you need to pay attention to are any reddish fluids pooling up beneath your car when you park. This can indicate a transmission leak. While it’s probably not what you want to see, it’s always better to act quickly and take it into the shop than wait and see what happens.

When you bring your car into the shop, we’ll investigate the hoses, gaskets, and seals of your transmission until we find out what’s going on. Then, we’ll replace the faulty part with one that keeps your transmission running well.

Count on Sornoso’s Auto Repair for Transmission Service

At Sornoso’s Auto Repair, we’ve seen it all. Big SUVs, performance vehicles, large trucks, you name it. We know the ins and outs of automatic and manual transmissions intimately and are prepared to service and repair your vehicle whenever you need it. To set up a service appointment, give our shop a call at 626-966-0404 or book an appointment through our website.

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