Transmission Repair & Service St. Thomas, 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 am super satisfied with...
Rayaan
I am super satisfied with their Customer service, on the note it’s awesome. I had my vehicle with squeaking sound, it needed oil change, brakes, and some suspension repair. Reasonable prices + right on time. After repair, My car drives smooth & comfy on the road, no squeaking or any other noises. Highly recommended for mechanical repairs or any fluid changes.
Date: August 15, 2024
Website: Google
I am super satisfied with...
Rayaan
I am super satisfied with their Customer service, on the note it’s awesome. I had my vehicle with squeaking sound, it needed oil change, brakes, and some suspension repair. Reasonable prices + right on time. After repair, My car drives smooth & comfy on the road, no squeaking or any other noises. Highly recommended for mechanical repairs or any fluid changes.
Date: August 15, 2024
Website: Google
I am super satisfied with...
Rayaan
I am super satisfied with their Customer service, on the note it’s awesome. I had my vehicle with squeaking sound, it needed oil change, brakes, and some suspension repair. Reasonable prices + right on time. After repair, My car drives smooth & comfy on the road, no squeaking or any other noises. Highly recommended for mechanical repairs or any fluid changes.
Date: August 15, 2024
Website: Google
Vehicle was making a weird...
Shania Mason
Vehicle was making a weird noise this morning when I started it (Saturday) & my usual mechanic is closed . I called them & was told to bring it in anytime today & they'd take a look & lemme know what it was. Brought it in & was seen immediately. Was told what the issue was & what needs to be done etc. at no charge. The gentlemen also told me that i shouldn't drive it this weekend ,which I'm thankful they did. Recommended me to a rental car company also as I had an event to get to this weekend. Thank you guys for your time & knowledge, you saved me a hefty tow bill plus some. 10/10 would recommend. Will be going back for my next oil change !
Date: July 13, 2024
Website: Google
Travis is the man. Ive...
Jade Morris
Travis is the man. Ive sent him 3 very different vehicles and he's done superb work everytime. Wouldn't trust anyone else. Thank you for your honest work and respectable pricing. All wanted on the "stolen car list" and he was sure to lock them up in the shop for me, helped me sleep at night. I've seen him drive customers back to Toronto from woodstock to get their family home safe while he repairs the vehicle. Really goes out of his way in the customer service department and does qaulity work.
Date: June 28, 2024
Website: Google
Thank you! Thank you for...
Nicolette
Thank you! Thank you for helping me figure out a payment plan and for being so honest with me. Thank you for fixing my car!
Date: June 27, 2024
Website: Google
Thank you! Thank you for...
Nicolette
Thank you! Thank you for helping me figure out a payment plan and for being so honest with me. Thank you for fixing my car!
Date: June 27, 2024
Website: Google
Thank you! Thank you for...
Nicolette
Thank you! Thank you for helping me figure out a payment plan and for being so honest with me. Thank you for fixing my car!
Date: June 27, 2024
Website: Google
Very friendly and helpful staff...
Potato Express
Very friendly and helpful staff they helped me a lot with professional way🌹best of luck
Date: June 18, 2024
Website: Google
I don’t even know where...
Akayla Mitchell
I don’t even know where to begin. Mark went above and beyond from our first conversation and walked me through everything and kept me updated the whole way. My car ended up being more complex then we all originally thought but the team handled it amazingly and Mark made sure I understood everything that was happening and worked longer hours to help trouble shoot. I must say have to worry about a big repair on a 3 month old car was not something I imagined having to navigate but Mark showed compassion and honesty I would go back in a heartbeat(hopefully I won’t need to for a long time!) Thank you again Mark, Tyler and team. My car runs 1000x better than when I bought it.
Date: May 16, 2024
Website: Google
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