Transmission Repair & Service Markham, Ontario

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
If you are looking for...
Kim Elliot
If you are looking for an HONEST mechanic - Ken at Mister Transmission Markham is the best you can ask for! He'll never make up issues just to make a buck. Been coming here for years and would never go anywhere else. Thank you for everything Ken!! My car hero!
Date: June 2, 2024
Website: Google
Great service at an unbeatable...
Alex Gregory
Great service at an unbeatable price - Will return for future service! Ken was a pleasure to work with, very patient and knowledgeable. Thank you!
Date: May 25, 2024
Website: Google
I have a 2015 Mazda...
Jaimin Patel
I have a 2015 Mazda 3 with automatic transmission. It is having jerking issue at 2nd gear when the car is cold. One of my known mechanic suggested Ken for transmission issues. I went there and parked my car overnight to make sure it is cold. In morning, Ken drove it and figure out instantly it was a computer mechanism trying to save fuel by engaging clutch and gear differently, which is normal and I should not spend any money on it. I liked Ken's experience and knowledge and his guidance which saved me going broke.
Date: May 11, 2024
Website: Google
Ken was very patient, listened...
Ralf Wieser
Ken was very patient, listened to my issue, and made the appropriate service recommendation - this had to do with the torque converter. He cares about his clients and is willing to suggest and try things that could avoid a significant service activity. It worked ... I am a happy customer.
Date: April 9, 2024
Website: Google
Thanks a lot Ken. I've...
Igor Nikolaenko
Thanks a lot Ken. I've just bought a used Subaru and it was shaking on acceleration. I thought that it was a transmission, but after Ken diagnose the car it was 5th cylinder misfire. Much cheaper fix.
Date: March 7, 2024
Website: Google
Well, where do I start,...
Gordon Kendrick
Well, where do I start, first of all Ken is a great person to work with, gets dependable results on his repairs with very fair pricing. He understands that his customers are all trying to make a living just like him and he goes over and beyond to make your repair costs as reasonable as possible. He rebuilt my transmission about a year and half ago, my warranty had expired, I had a small shifting issue last week, I went to see him, he quickly tested and resolved my issues within 24/36 hours and had me back on road. That is great customer service which seems to be almost non existent now a days. Fantastic work Ken, I will always appreciate everything that you have done for me and my 2016 Dodge Caravan.
Date: March 3, 2024
Website: Google
I wish I could rate...
I M
I wish I could rate more than 5 stars. Ken's expertise is truly exceptional. My Toyota Venza encountered a transmission issue, but Ken swiftly resolved it with remarkable efficiency. His patience and professionalism were evident throughout the process. I wholeheartedly endorse this establishment. Thank you, Ken, for your outstanding service.
Date: February 26, 2024
Website: Google
I wanted to say thanks...
Srikanth Singh
I wanted to say thanks to ken before, I share my experience. I Drive Mazda 3 2004. One fine evening I was driving on 401 and heading towards an exit by slowing down my car and all of sudden AT light turned on my car display and after that it doesn't apply 4th gear, It just transmitting around 1st 2nd and 3rd gear.. was little tensed as any transmission issue is pretty expensive and top of it I am student. Upon some Good reviews on Google, I reached out to ken. He diagnosed my car with his tools understand the problem and fixed it with in couple of minutes and he didn't not even took a dime from me Such a great person and I see he never takes an advantage of our situation.. Thank you Ken..
Date: November 21, 2023
Website: Google
Ken has been and continues...
Subie Norm
Ken has been and continues to be our family's go-to guy for all things driveline and transmissions related for probably close to 2 decades now. He's honest, transparent, and master of this craft. We get peace of mind knowing that it's done right. We've had everything from transmissions and differentials rebuilt by Ken on our Ford heavy duty vehicles to even some custom driveshaft repair work on our Subaru. He replaced those pesky non serviceable joints on the Subaru driveshafts with serviceable ones, instead of needing to replace the whole shaft assembly (would have cost a lot more). Every repair has been flawless. More recently my old Subaru Forester developed a squeak in the rear end. Brought it to Ken and he was able to diagnose and pinpoint several potential areas where the noise was likely coming from. After he worked his magic, the noise is now gone! Highly recommended! Thanks Ken!
Date: November 15, 2023
Website: Google
I have been taking my...
Jon Westover
I have been taking my vehicles to this Mr. Transmission for a few years now and have been provided exceptional service with each visit. Ken is extremely friendly, knowledgeable, and trustworthy. I would recommend you take your car to him with any problem as he will solve it in the most timely and affordable way possible.
Date: October 26, 2023
Website: Google
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