Transmission Repair & Service Alta Vista, ON

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.

Learn More
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.

Learn More
image-reviews image-reviews
Customer Reviews
Got my winters put on...
Zach Caithcart
Got my winters put on here. Called to book and they got me in the next day! Only took less than an hour for the appointment and all the staff were awesome. Definitely recommend if you need anything transmission-related (or in my case tires).
Date: November 6, 2025
Website: Google
I stopped in with a...
Shannon Kunstadt
I stopped in with a small emergency—a flat tire and possibly loose bolts. They helped me immediately, even though it’s outside of their services, by tightening the bolts and filling the tire with air. To have such great customer service and not be taken advantage of was so nice! I really appreciate the time they took to help me out.
Date: October 6, 2025
Website: Google
I arrived at the very...
SMAIL HADJ-TAYEB
I arrived at the very last minute before closing and the team at Mr. Transmission still took care of me. Fast, professional, and friendly service. Thank you to the whole team for your great work ! 🙏
Date: September 26, 2025
Website: Google
They are professional mechanics who...
Dawit Jemberu
They are professional mechanics who are honest and fair. Thank you, NOHA & Francis!They never charged for the car's inspection.!!
Date: September 25, 2025
Website: Google
Kyle, Noah and Tenesse Mike...
Info @613PAINTING.com
Kyle, Noah and Tenesse Mike were all super helpful and knowledgeable. 10/10 would recommend to a friend! Thanks guys 🚗
Date: August 26, 2025
Website: Google
I didn't visit this business...
Kerry Scrivens
I didn't visit this business but I was going to. My rating is based on the advice they gave me over the phone. They din't draw me in to spend $800 I didn't need to spend ; instead they gave me an honest assessment over the phone so I didn't need to go in. I plan to go soon to have preventive maintenance performed on my new vehicle based on their honesty. If you have any questions or need transmission service, this is your go to business. It was recommended to me and I feel they are trustworthy.
Date: August 3, 2025
Website: Google
After being told (by another...
Susan Richer
After being told (by another shop) that we needed a new transmission, we went to Mr. Transmission where Noah and the crew diagnosed the problem as the clutch and saved us several thousand dollars. They stuck to the original estimate although the job was complex and took extra time and were professional and patient throughout.
Date: August 1, 2025
Website: Google
If you’re looking for a...
Zoe Peardon
If you’re looking for a reliable, trustworthy mechanic who goes above and beyond, look no further than Mr. Transmission (ask for Noah!). You won’t be disappointed.
Date: July 27, 2025
Website: Google
best
Brave Mbano
best
Date: July 26, 2025
Website: Google
Our car had a transmission...
Margaret Eaton
Our car had a transmission issue when we were at our cottage. We couldn't find a shop that would take us on short notice. Noah said he would squeeze us in, did a test drive, and assured us we could make it back to Toronto. And he didn't charge us. Thank you so much Noah and Mr. Transmission!
Date: May 23, 2025
Website: Google
Mister Transmission Blogs
Recent Blogs
Transmission Replacement: Understanding ...
The transmission is one of the most important systems in any vehicle. It controls
Read More
November 07, 2025
Honda Transmission Repair: Proven Soluti...
The transmission is one of the most important systems in your Honda because it
Read More
October 31, 2025
Transmission Rebuild: When It’s The Ri...
When a vehicle’s transmission starts to show problems, it can leave drivers feeling
Read More
October 23, 2025
Ford Transmission Problems: How To Spot ...
Ford vehicles have earned a strong reputation for performance, but transmission
Read More
October 15, 2025
Commercial Transmission Services: Reliab...
Commercial vehicles operate under tougher conditions than personal cars. Delivery
Read More
October 07, 2025
Dodge Transmission Problems: What Every ...
Dodge vehicles are known for their performance, but like any automobile, they can
Read More
September 30, 2025
Honda Transmission Problems: Common Issu...
Honda vehicles are admired for reliability, but transmission issues remain a concern.
Read More
September 23, 2025
Transmission Service: Why Regular Mainte...
The transmission is one of the most important parts of any vehicle. It transfers
Read More
September 16, 2025
Transmission Problems: Early Warning Sig...
Every driver depends on their vehicle to run smoothly, whether for work, family, or
Read More
September 08, 2025
Honda Transmission Repair Or Replacement...
Honda vehicles are known for their smooth performance, long-lasting engines, and
Read More
August 29, 2025
Locations Served