Transmission Repair & Service London, 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.


Visit your nearest Mister Transmission location today!

10827km away
  • 15903 Stony Plain Rd. NW
  • Edmonton, AB
  • T5P 3Z7
  • 587-786-6465
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 would not hesitate to...
I would not hesitate to recommend this business to others! Peter was extremely helpful, efficient, and thorough throughout all interactions. He went above and beyond to assist me with my vehicle , while taking the time to explain things in a concise manner. The business is very well run, the environment is clean, sanitized, and well kept to ensure the safety and comfort of customers.. It was wonderful to deal with a business and person that still works from a place of integrity!
Date: June 25, 2020
Website: Google
The owner Peter is fantastic!...
Craig Thomas
The owner Peter is fantastic! He is open, honest and trustworthy in everything he recommends. He wants to make sure your vehicle is operating properly and not charging you an arm and a leg to do so. Would highly recommend this Mr. Transmission to anyone!!
Date: June 25, 2020
Website: Google
*100% Recommend to anyone with...
Emmanuel Hakizimana
*100% Recommend to anyone with a car!* •These people are Amazingly fast, Top of the tier with surprisingly low prices. •Stop by you will not go wrong! *Good Quality work 10 out of 5 Stars*
Date: June 9, 2020
Website: Google
Great guys at this MT....
J Abela
Great guys at this MT. Keep me on the road. Friendly. Professional. No stress. Thanks Guys!
Date: January 2, 2020
Website: Google
Took my 65 mustang restomod...
Luis Couto
Took my 65 mustang restomod with a 408 stroker here to have transmission rebuilt. Couldn’t be happier with the service and outcome of the rebuild. I’ve been coming back to this shop for all service and repairs to my truck and wife’s car ever since. Excellent service and quality work. Highly recommend this shop to all.
Date: November 26, 2019
Website: Google
One word: experts
Pavlo Kobzar
One word: experts
Date: October 24, 2019
Website: Google
Very friendly and Knowledgeable staff
Zak Zak
Very friendly and Knowledgeable staff
Date: August 18, 2019
Website: Google
Hard to find an honest...
Paul D'Cruz
Hard to find an honest mechanic. Dealership wanted to charge me $6k to fix a bunch of things on my minivan. Brought it to this Mister Transmission and they fixed everything for $1.5k. Definitely will be bring my cars here from now on.
Date: August 6, 2019
Website: Google
Hands down the best place...
Lovish Sharma
Hands down the best place for rebuilding transmission or fixing transmission related issues. I took my hino 185 commercial truck for rebuilding transmission. I told Peter the owner of the shop upfront that this truck is my living and I need my truck back asap, other shops told me 8-10 days for rebuilding the transmission but peter went above and beyond to help me and fixed my truck in 3 days. These people are honest and do quality job. Thank you Peter
Date: July 8, 2019
Website: Google
Great service . Peter the...
Tim Tirona
Great service . Peter the manager a very helpful guy.
Date: May 16, 2019
Website: Google
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