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
I had a transmission problem...
Ravi K
I had a transmission problem in my Mazda3,10, recently; had checked engine sign and AT sign. I got kicks when I changed gear from Park to Drive/ReverseThe dealer & my mechanic recommended me to replace the Transmission. I really frustrated. Finally, I took my car to 50 Donpark Road, Markham. There, technician , Ken Barone identified the problem quickly, and fixed it within a short period of time ; only he replaced the TCM . His diagnostic skills saved my time & money. It's my pleasure to recommend him to anyone. Thanks again to Ken.
Date: January 18, 2023
Website: Google
It was a wonderful experience....
Billy Taran
It was a wonderful experience. The representative Ken was helpful, explained things in a way that I understood and kept me in the loop and followed up with me. The cost of the repair was very reasonable and I'm so happy with the results.
Date: December 31, 2022
Website: Google
Good day! i just wanted...
Ken Barone
Good day! i just wanted to reply to the review by Lorenzo. I think its best to shed some light on the repair to Lorenzo's Cadillac V series car. the car was in for repair, and yes, had issue's with the transmission .and when the car left. the parts for his Cadillac are on nation wide back order. since last march of 2021. i also tried to find a used transmission, ordered one and but was not the same. besides our shop is very busy, it took time to search for parts ,and waiting for the used transmission to arrive. after exhausting every avenue. i had to called and explained to the customer. he said he is fed up with this car. im going to just sell it!and get rid of the car. Maybe just take it the way it is and tow back to my house then sell it the way it is? i said i think it would be better if i reassemble the transmission and then install back into the car. i said no extra cost to assemble the transmission only to remove and reinstallation. Lorenzo said that the shifter cover was already like that when it came in. My goodwill offer on labour still stands with no hard feelings. and if for some reason parts become available i would still be happy to help. feel free to reach out to me anytime. Ken
Date: November 26, 2022
Website: Google
Good service
Abid Hussain
Good service
Date: November 22, 2022
Website: Google
The service manager Ken fixed...
Yuhong Liang
The service manager Ken fixed the issues in my transmission with very reasonable charge and minimum time required. Highly recommended!
Date: November 11, 2022
Website: Google
Always great service. Ken is...
Leonor Agosto
Always great service. Ken is our guy, always professional and timely. Wouldn’t consider going anywhere else!
Date: October 28, 2022
Website: Google
Ken Beron, the best guy...
Diego Eduardo
Ken Beron, the best guy , honestly the best mechanic
Date: October 20, 2022
Website: Google
Highly recommend this location! I...
Scott Bullock
Highly recommend this location! I don't normally post these but Ken was extremely helpful with my repair. He answered every one of my questions. If your car has a problem, go to this location, Ken will fix your problem
Date: September 20, 2022
Website: Google
My Nissan had a clicking...
Wilson Melo
My Nissan had a clicking sound when I drive. Took it to my dump mechanic and he said it was the brakes, we change the brakes and the sound was still there then he said oh it’s the transmission(cause everyone knows Nissan has bad transmission) . I brought it here and Ken took it for a test drive, scan the transmission and saw nothing wrong with it. He then adjusted the brakes and the sound was gone n he did it for free. Initially I didn’t have to change my brakes in the first place. Some mechanics need serious flogging for wrong diagnosis
Date: September 7, 2022
Website: Google
Ken Barone, I highly recommend...
Wilfred Gamazon
Ken Barone, I highly recommend him at this location. Great guy very honest and always there to help, giving you information what’s need to be done and honest opinion about any issues of transmission services.
Date: July 31, 2022
Website: Google
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