Transmission Repair & Service Woodbridge, 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
Good and kind service
Filo Marciano
Good and kind service
Date: November 9, 2025
Website: Google
A fantastic, trusting experience. Wouldn’t...
Craig Orenstein
A fantastic, trusting experience. Wouldn’t hesitate to return or recommend. Quite thankful in fact!
Date: September 11, 2025
Website: Google
I called 3 shops to...
Pat T
I called 3 shops to replace my clutch cable on my 1992 Mustang and was rejected. I had to get my car fixed in a hurry as I was moving out of town in 2 days. Then I called Mister Transmission Woodbridge and they had the hard to find part in the next day and had my car fixed in and hour!! Thanks to Lorenzo and the rest of the team for solving my problem!
Date: July 24, 2025
Website: Google
Recently had my car serviced...
Andre Samuels
Recently had my car serviced at Mr.Transmission Woodbridge and it was a pleasant experience. The team is very knowledgeable and was able to figure out the problem with my car and found a solution that made my car run even better than before. Customer service was good and even helped pay for a couple days for my rental car while waiting for a part because of shipping issues. Would recommend.
Date: June 25, 2025
Website: Google
They are the best team...
Azeez Al_zand
They are the best team ever and professional thank u guys again
Date: May 28, 2025
Website: Google
Old school guys with a...
Philipp Kamtchatnov
Old school guys with a lot of experience
Date: May 13, 2025
Website: Google
I recently had a transmission...
Jordan Granato
I recently had a transmission rebuild done at Mr. Transmission (Woodbridge, Rowntree Dairy Rd) Lorenzo and his team handled my vehicle and situation with the utmost professionalism and transparency, Providing me an accurate quote upfront after a free road test / Scanner diagnostic before even disassembling my transmission. Giving me timely and honest updates about the status of my vehicle’s repair while the service was being performed for the few days it was in the shop. I would highly recommend Lorenzo and his team at Mr.Transmission In Woodbridge to anyone experiencing issues of their own. 10/10
Date: April 25, 2025
Website: Google
on time and as advertised
Carl Valitutti
on time and as advertised
Date: April 8, 2025
Website: Google
Mister Transmission Woodbridge at 1000...
Carmine Iacono
Mister Transmission Woodbridge at 1000 Rowntree Dairy Road at Hwy 7 is phenomenal. I met with Lorenzo Biafore who explained to me what I needed to know about my vehicle. He listened tentatively as I explained what my vehicle is doing. He took my vehicle for a road test ride. And when we got back to the shop he provided me with a complete detailed report and detailed quote for the work needed. The service is exceptional, and their knowledge and expertise is incomparable. Their prices are reasonable and the work is exceptional. Thank you, Lorenzo Biafore and Dann Biafore, for your exceptional service. You guys "made me feel like a somebody". I rate this location of Mister Transmission 5 out of 5 mustaches. Tell'em that Uncle Carmine sent you.
Date: March 29, 2025
Website: Google
I recently had the pleasure...
Amir Malool
I recently had the pleasure of visiting Mister Transmission in Woodbridge, Ontario, and I highly recommend them! The service was exceptional, and the team displayed a remarkable level of professionalism and personal attention. They were eager to assist and provided effective solutions to my automotive needs. If you're looking for a reliable and trustworthy transmission service, Mister Transmission is the perfect choice!
Date: March 26, 2025
Website: Google
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