Transmission Repair & Service Willowdale, ON

Pinpointing the exact cause of any transmission problem takes skill, knowledge, and investigation

The evolution of transmissions has made these machines and systems increasingly complex. When transmission repairs are required, determining the cause and cure for what ails can be tricky. Why? Because transmissions have become remarkably complex and computerized and that presents both advantages and disadvantages. On one hand, transmission performance has become noticeably better in all vehicle makes and models. On the other, the increased complexity and digitization of transmission systems has made repair work a highly technical and complicated affair.


As you can imagine, there are different types of transmission repair jobs and options you can choose from depending on the nature of your vehicle’s breakdown. Understanding what those options are can help you make informed decisions when faced with a choice of transmission repairs to weigh.

A Repair for Every Type of Transmission Malfunction

Some transmission repair work is straightforward and mechanical in nature. Other times, it’s a combination of mechanical and electronic engineering that’s required to get your car back on the road. The most common types of repair work include:

  • Adjustments and in-car repairs. Most minor repairs are simple matters that are done without removing the transmission from the vehicle. If yours is a computer-controlled transmission that is not shifting properly, it is often the result of a computer sending incorrect signals due to a faulty sensor, or the transmission is not reacting to the command because of a bad connection or defective solenoid pack. If a non-computer controlled transmission is shifting too early or too late, it may require an adjustment to the throttle cable. If the vehicle has a vacuum modulator instead of a throttle cable, there is an adjustment that can be made using an adjustment screw in some designs. In vehicles with modulators, however, it is important to ensure there are no vacuum leaks and that the engine is running at peak efficiency.
  • Reseal jobs. A transmission is re-sealed to repair external transmission fluid leaks. If you see spots of red oil on the ground under the car, your transmission may need a re-seal job. To check a transmission for leaks, a technician will put the vehicle on a lift and examine the unit for signs of oil leaks. If a leak is spotted at any of the external seals or gaskets and the transmission otherwise performs well, the technician will most likely recommend that the transmission be re-sealed. Most of the external seals can be replaced while the transmission is still in the car but, if the front seal must be replaced, the transmission must first be removed from the vehicle to gain access to it.
  • Replacing accessible parts. There are a number of parts that are accessible without requiring the removal of the complete transmission. The parts that are accessible, however, vary from transmission to transmission and most transmission repair facilities would hesitate to provide meaningful warranties on external repairs for the simple reason that they cannot see if there are any additional internal problems in the components that are only accessible by transmission removal.
  • Complete overhauls. Also known as “rebuilding a transmission”, a complete overhaul involves the removal and disassembly of the transmission in its entirety. Every part is inspected for wear and damage, then cleaned in a special cleaning solution, or replaced with another part depending on its condition. Parts that have friction surfaces, such as bands and clutches are replaced as are all seals and gaskets. The torque converter is also replaced, usually with a remanufactured one. Technical service bulletins are checked to see if the auto manufacturer recommends any modifications to correct design defects that were discovered after the transmission was built. Automobile manufacturers often make upgrade kits available to transmission shops to resolve these design defects.

Replacing or Overhauling a Transmission

When a transmission requires an overhaul, there are two options that you may have. The first is to remove your existing transmission and overhaul it, then put the rebuilt unit back in your car. The second option is to replace your existing unit with another unit that has already been rebuilt or remanufactured.

A word to the wise: replacing your transmission with a used one may not be your best option. Used transmissions often have questionable histories that could create a whole new set of challenges. New transmissions, meanwhile, are mostly aftermarket transmissions billed as new but are in fact rebuilt transmissions with new parts.

The cost of the repair is always top-of-mind and understandably so. Transmission repairs are usually unexpected (and unwelcome). The cost varies depending on the outcome of our diagnostic testing, and we will help you to understand the various factors that come into play. We also offer our customers flexible payment options.

Whichever route you choose, you can trust our transmission experts to get you and your car back on the road.

Visit Mister Transmission for an assessment on what transmission repairs you may need. Contact the Mister Transmission service centre nearest to you.

Featured Services
Transmission Repair

The evolution of transmissions has made these machines and systems increasingly complex. When transmission repairs are required, determining the cause and cure for what ails can be tricky.

Learn More
Transmission Technology

At Mister Transmission we have access to leading-edge diagnostic equipment, enabling us to offer you the fastest and most accurate findings about what’s going on inside your vehicle’s transmission.

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Transmission Maintenance & Service

Just as you have other parts of your car serviced, your transmission needs maintenance to ensure a long life and avoid transmission problems.

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Customer Reviews
Gus was friendly and helpful....
Matthew
Gus was friendly and helpful. He laid out my options clearly. When the repair was complete, they even updated my car’s computer software for free! Next-level service; would recommend!
Date: April 28, 2025
Website: Google
A few weeks ago, I...
Harvey Wang
A few weeks ago, I had a great transmission fluid experience at this branch of Mister Transmission. I purchased a used Hyundai Tucson but unfortunately this car’s maintenance history is not complete. I decided not to take a risk of damaging its transmission and change its transmission fluid. This Mister Transmission location did a complete transmission fluid change and my car’s transmission perform much better after the change!!
Date: April 23, 2025
Website: Google
Gus was very professional and...
Mike Long
Gus was very professional and took the time to patiently review a number of documents that were provided by the dealership so that I fully understood all the codes being displayed with respect to recalls from Dodge. He was very approachable and forthcoming in answering all my questions.
Date: April 21, 2025
Website: Google
We're happy with the customer...
Tanya Mohamed-Coyle
We're happy with the customer service we received 👍🏾
Date: April 4, 2025
Website: Google
I had my transmission repaired...
Sujosh Koshy
I had my transmission repaired at Mr transmission scarborough location on 13 th of sept 2024. The car ran fine after the transmission repair but recently on march 13th 2025 this month while i was driving the car completely lost the connection i couldnt move the car. The car was on drive with ignition on but it wont move only the engine would race. I dont know what went wrong i had to tow it to Mr transmission at 4900 sheppard ave. East because thats the intial place i got my transmission repaired and i had a 1 year and 20000 kms warranty on it. GUS was there to help me he checked out the vechile and found it was not all a transmission issue. It was a broken electrical wiring from main harness to pcm. My car was repaired and was back on road in few days. Thanks to Mr transmission. I would really recommend it to everyone with transmission issues
Date: March 28, 2025
Website: Google
Had amazing service, from start...
Mary Stojcevski
Had amazing service, from start to completion.. Great workmanship, highly recommend this location.
Date: March 26, 2025
Website: Google
Have brought several of my...
Peter Cochrane
Have brought several of my vehicles here for transmission service always prompt service. And reasonable prices. Gus and the team are great
Date: March 25, 2025
Website: Google
The owner is quick with...
Natalie Papolis
The owner is quick with the diagnosis and gives you a good explanation of the problems.
Date: March 25, 2025
Website: Google
The service manager was very...
Shellwin Hosannah
The service manager was very helpful. Thanks. Let us do it again.
Date: March 21, 2025
Website: Google
I was very satisfied and...
Ernest Osei
I was very satisfied and happy to have my transmission fluid changed at Mister Transmission at Scarborough location. I did not book an appointment, l called Gus, he picked up the phone and agreed to accommodate me. I got to the service location, he greeted me and was ready to help me out. I really felt good with the sense of courtesy and professionalism he showed to me. I will always recommend Mister Transmission to anyone and friends in need of such help. Thank you Gus for the good job done! Ernest!
Date: March 20, 2025
Website: Google
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