Transmission Repair & Service Richmond Hill, 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
Jason took care of my...
Ali Mirzaei
Jason took care of my truck with a broken rear diff and he made it fixed for 400$ below my lowest quote . I’m happy to have met Dan, Vince and Matt. Guys are great
Date: August 26, 2022
Website: Google
The guys at the Richmond...
Carmine Perrelli
The guys at the Richmond Hill location have over 100 years of combined experience. They work on everything from my 2021 Navigator to my 71 cutlas convertible. You don't let just anyone work on your classic. Gary and the fellas know what their doing and they do it with honesty and kindness and fair pricing. Sadly, when the property is converted to highrise, it may be the end of Mr. Transmission in Richmond Hill and that will be a very sad day for me and all my vehicles. Thank you for over 50 years of service to the community, Gary.Carmine Perrelli
Date: May 20, 2022
Website: Google
Fantaatic service. Excellent friendly staff....
Juanita Butler
Fantaatic service. Excellent friendly staff. Gary is the Best! I would recommend this place for all your auto needs.
Date: February 14, 2022
Website: Google
Excellent work, friendly atmosphere car...
Amber Holden
Excellent work, friendly atmosphere car works great, would highly recommend
Date: January 23, 2022
Website: Google
I broke down just outside...
Norm Buda
I broke down just outside Richmond Hill 3 days before Christmas and dropped off my broken vehicle with Gary. I was on a spiritual journey across Canada and that was where things got put on hold. Slow down is the message.Long story short folks, Gary and his men gave it back to me first week of January and I immediately headed back to Alberta. I drove 4km on a rebuilt transmission, transfer case and universal joint replacement. I drove through some of the worst conditions I have ever done before and all the time didn't even have a single worry or thought about the work that was just done cause I just knew they were professionals and I was at peace. Thanks again Gary for your help. God bless you guys! Have a prosperous 2022.
Date: January 12, 2022
Website: Google
great staff!!
Kieran Williams
great staff!!
Date: January 9, 2022
Website: Google
These guys know everything about...
Bob Bertrand
These guys know everything about transmissions. Gary and the staff are super friendly and you always get an honest reasonable quote. I wouldn't go anywhere else.
Date: October 12, 2021
Website: Google
Dropped my RRS on Monday...
Interesting World
Dropped my RRS on Monday for rear differential repair as it was leaking and got it back today (thursday). Only had to pay for $169 for deductible as Gary handled my warranty claim (Lubrico Warranty)Gary is awesome and friendly hehe good guy
Date: October 1, 2021
Website: Google
Gary and the team did...
David Kamenskii
Gary and the team did a great job replacing transmission fluid on my MINI’s automatic 6sp.It was getting a bit jerky in between shifts but after the oil was changed and pan was cleaned, it’s butter smooth again.Great professionals!
Date: August 19, 2021
Website: Google
Gary was very professional and...
Will Lanktree
Gary was very professional and went above and beyond to fix my vehicle and get it back on the road in a timely manner. Would definitely recommend them to others.
Date: March 10, 2021
Website: Google
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