Transmission Repair & Service Barrie, 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 highly recommend this location....
J R
I highly recommend this location. Al and his team were great. I had clunking in my engine and the usual mechanic that I go to told me to go to Mr. Transmission, as they couldn't fit me in for another week. I called Al, explained my situation and he booked me in first thing the next morning. It turned out to be nothing major and I had my car back the same day. Great service and the price was far less than I expected to pay. Thanks again!
Date: October 9, 2022
Website: Google
I cannot praise this business...
Melissa Godden
I cannot praise this business enough for great customer service! I was stranded with transmission issues far from home and they helped me very last minute to get on my way. While waiting in the shop I seen an array of thank you cards just showing how outstanding this place is! I wish I lived closer to use them regularly☺️. I highly recommend their services! Thanks again to the staff …. you don’t know how relieved I feel in being safe on my way home.
Date: August 17, 2022
Website: Google
This is the best transmission...
Gurjeet Singh
This is the best transmission shop in barrie. AL is very polite and helpful. His honesty took me to his shop and get my repairs done rather than goin to my car company. He tried his best to help me in the situation I was in. Thanks AL. I would definitely recommend this place to anyone with transmission problems.Service: Transmission
Date: July 5, 2022
Website: Google
We recently took our 2018...
Debbie Cormier
We recently took our 2018 Lincoln in for a transmission check. They did a transmission diagnostic as well as an engine diagnostic and found no issues. They had the vehicle for a couple of hours, test drive and and all of that was “no charge”. We couldn’t believe it! The staff is so courteous and accommodating. We would drive the hour again to use this location!Services: Auto engine diagnostic, Transmission
Date: June 30, 2022
Website: Google
Just want to tell you...
Dan De
Just want to tell you that I had a great experience with AL at this location. Professional, polite and efficient. Most importantly, I asked about putting in a transmission cooler and he told me I already had one. He could have taken me. What more do you want? Honesty and kindness rule here.Service: Transmission
Date: June 22, 2022
Website: Google
Al is the most gracious...
Tamare White-Wolf
Al is the most gracious n helpful person EVER honestly kind, knowledgeable n someone deserving of your trust!
Date: May 26, 2022
Website: Google
Very good for stars
Sam Guerra
Very good for stars
Date: January 25, 2022
Website: Google
Awesome customer service. A year...
Jeffrey Dominic
Awesome customer service. A year after my transmission repair I felt an adjustment was required to my transmission and they performed it free of charge standing behind the quality of their work.
Date: October 8, 2021
Website: Google
I needed my 1974 MGB...
Marcel Heaton
I needed my 1974 MGB clutch repaired. Mr Transmission did a great job and in a timely manner. I thought the price was a bit high but they were the only local company that would work on my car. The staff were knowledgeable and friendly. I would recommend them to my friends and family.
Date: July 15, 2021
Website: Google
Hats off to Mister Transmission....
Aiden Langford
Hats off to Mister Transmission. Please go here for transmission work or any vehicle service! My 2010 Mazda 3 transmission started slipping at 170K and wouldn't reverse. The team at Mister Transmission were extremely professional and I can't thank Al enough for his kindness and coherent way of explaining what needed to be fixed and why. He made it easy to understand exactly what was wrong with the trans and the logistics behind the repairs. Most shops I've been to for any work on my vehicle have fed me jargon I couldn't follow and I was never entirely sure if they were just trying to get more money from me. Mister Transmission did not do that and my transmission shifts beautifully again (just like new). Once again, THANK YOU! I am beyond satisfied with their work. Don't hesitate to visit them or give them a call.
Date: June 30, 2021
Website: Google
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