Transmission Repair & Service North York, 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
Brought my 370z to get...
Yash Prasad
Brought my 370z to get the my clutch and slave cylinder replaced, turned out I needed to also replace my master cylinder, which in total wasn’t expensive compared to what other shops were charging. They got everything done within 2 days and I’m very happy with the car! Also very good customer service!
Date: March 2, 2024
Website: Google
Jennifer at Mister Transmission has...
Walter Slingerland
Jennifer at Mister Transmission has been exceedingly helpful in repairing my Warranty Customers Vehicles! Keep up the great work!
Date: February 22, 2024
Website: Google
I express my sincere gratitude...
PrayTogether ForEver
I express my sincere gratitude for the exceptional and courteous service provided by Mister Transmission. When my Mustang's transmission faced a sudden failure, I found myself in a challenging situation with nowhere to turn for assistance. The team at Mister Transmission not only extended a helping hand but also offered valuable options and unwavering support during this time. I am truly grateful for their kindness and expertise, especially in a moment of crisis when you lose your car and need help. Best regards.
Date: January 19, 2024
Website: Google
Had a 2019 Mitsubishi eclipse...
Tafadzwa Makumbiro
Had a 2019 Mitsubishi eclipse cross transmission redone by the mister transmission down by o’conner drive and it was a rebuild and I must say they did a fantastic job. Mitsubishi dealer tried to quote me 10k and buy a new car after my transmission went but spoke to the owner and they did the job for 6.7k with taxes parts and labor and it was a much better deal than just throwing away a perfectly usable car. The rebuilt was done well my car moves great never felt such great driving experience. Car feels very strong now compared to when I bought it used. Already put about 2k kms on the car but since my vehicle is a high milage business purpose car the rebuild fixed my car so good I would highly recommend these guys. Still got warranty on the vehicle for the coverage of the repair but hands down great place to get your transmission rebuilt. If you ever need a transmission replacement or repair get a quote from these guys before getting rid of good performing cars for new car payments. Better a few thousand dollars of repairs than years of debt payments.
Date: January 12, 2024
Website: Google
Good surface
Samer Khazal
Good surface
Date: December 8, 2023
Website: Google
These people are the real...
Demaras Racing
These people are the real deal. When the dealersip told my pops the transmission on his VW was a 'non-serviceable unit' and had to be replaced, we brought it down to Mr. T instead. Unit was serviced for a fraction of the replacement cost the dealer quoted. Thanks to Jen and the guys in the shop, pops is back on the road. Chris
Date: December 6, 2023
Website: Google
Giorgio was super helpful -...
Emma Houston
Giorgio was super helpful - went in thinking I had a transmission issue - he diagnosed the problem as an engine misfire at no cost and referred me to a mechanic close by.
Date: December 4, 2023
Website: Google
Very professional and thorough.
Robert Zakrison
Very professional and thorough.
Date: November 14, 2023
Website: Google
This is one of the...
Suha S
This is one of the best car repair shops in GTA. They are professional, honest and prices are fair. I highly recommend for you to stop by an get an estimate from Jen before takin your vehicles to some other shop. I have been taking all my cars to them for years and always they do a great job for the best price possible
Date: October 28, 2023
Website: Google
Friendly and very helpful owners....
Lars Dijkema
Friendly and very helpful owners. Great service and a fair price for my transfer case rebuild.
Date: October 3, 2023
Website: Google
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