Transmission Repair & Service West Hill, 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.

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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
Service is very good. They...
Iqbal Chowdhury
Service is very good. They know what they are doing.
Date: September 27, 2024
Website: Google
Extremely Efficient with Excellent High...
Parminder Singh
Extremely Efficient with Excellent High Quality work on or before commitment. I wish a minimum warranty standard for all transmission work was 3 years 36 k miles. I think their good quality work after testing may last us over 100 k miles or 10 years or more based on demo testing before and after transmission rebuild and commitment to test visually for any possible leaks after 10 days. No leakage after 10 days will speak of high-quality work, and overall life span with regular transmission oil change will add to our commitment as future customers and references for other people needing similar work.
Date: September 24, 2024
Website: Google
Gus attended to my brother....
Eroy J
Gus attended to my brother. Very professional, Super knowledgeable, explained in details what caused the problem, then gave options for potential savings— without compromising quality. My brother is now very satisfied with the excellent service and with a rebuilt transmission, his grand caravan feels new again. Thank you, Gus!!
Date: September 21, 2024
Website: Google
Had a transmission leak that...
Marco Vetere
Had a transmission leak that was serviced for a great price. Professional work done and I was treated well. Would return again.
Date: September 6, 2024
Website: Google
I got my Ford transmission...
Moe Photography
I got my Ford transmission rebuilt. Amazing service, fast, reliable and efficient. Big thank you to Ray for getting my car done in few days although it was a big job. He definitely knows what he is doing and very experienced.
Date: August 30, 2024
Website: Google
Top Notch Great Service Highly...
Craig Brennan
Top Notch Great Service Highly Recommend
Date: May 3, 2024
Website: Google
Amazing service and nice reasonable...
Jason James
Amazing service and nice reasonable people.
Date: April 19, 2024
Website: Google
I have come to Sheppard...
A Grant
I have come to Sheppard location quite a few times and they have done the job amazing each time: I have had transmission problems for years and they gave me the best deal and my car is perfect now! Highly recommend
Date: February 28, 2024
Website: Google
Ray and Gus are my...
Peter Urbanski
Ray and Gus are my transmission guys from now on! Ray filled me in on any possible aspects of what can be wrong with my 1993 Lincoln TownCar He used to fix them (also Crown Vic's) back in the nineties Then, he had changed the fluid as the first step It's been two months since then, and my Lincoln is smoother then ever! My point is, Any shop can change the transmission fluid, but most of them will tell you "You need a new transmission" Honesty and integrity, which we all long for Sorry Rayfor waiting two months to write this, but I had to make sure I don't "jump the gun" to praise you!
Date: January 30, 2024
Website: Google
Customer service was great, Gus...
Julian Hay
Customer service was great, Gus did a great job and was very understanding and helped get my car running again. would recommend
Date: January 12, 2024
Website: Google
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