Transmission Repair & Service Whitby, 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.

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.

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Customer Reviews
Amazing experience from start to...
Sandra Hargrave
Amazing experience from start to finish. Denise, who handled my call and my concerns was excellent at explaining the process and helping me with my concerns. Drop off was smooth and easy.I felt listen to with my concerns and reassured that they would help me. By the end of the appointment they couldn't find the actual problem but I feel confident that the car is safe to drive and when the problem gets exasperated that I will definitely take the car back to mister transmission.
Date: August 21, 2024
Website: Google
Definately friendly and knowledgeable crew...
Adam Sloan
Definately friendly and knowledgeable crew here. If I ever need a transmission rebuilt again this is my go to 100%
Date: August 18, 2024
Website: Google
Mister Transmission in Whitby was...
C CE
Mister Transmission in Whitby was absolutely amazing. They were honest and reputable. I would recommend anyone to come here. I came all the way from Cobourg and appreciate all their expertise. Charlene
Date: August 10, 2024
Website: Google
Communication was fantastic right off...
Mark Fryer
Communication was fantastic right off the bat. They walked through what the diagnosing process would be over the phone, and I was given a timeline of when I could expect the results. They stuck to that timeline, and gave me much better news than I was expecting. Good people doing good work, which is a breath of fresh air in the automotive world!
Date: August 3, 2024
Website: Google
Denise and crew are 100%...
Adrian Muscat
Denise and crew are 100% professional, and extremely helpful. I had my 2015 Nissan Micra towed in on a Monday morning for rotted out, leaking transmission lines. After finding out from Nissan, the parts are no longer available, they came up with a fix, refilled the transmission to the correct level, and had it back to me Tuesday afternoon, all at a very reasonable price. It'll be the last Nissan I'll ever buy, but I'd definitely use Mister Transmission again. Thanks everyone.
Date: June 21, 2024
Website: Google
Denise and Shawn were an...
Chris
Denise and Shawn were an absolute pleasure to deal with. The price, and turn around time was incredible. My truck was towed to this location on a Thursday afternoon and the transmission was replaced and finished by Friday 2pm. They checked all my fluids, etc. After dealing with a complete nightmare with the GM dealership and one of the worst weeks of my life. Denise honestly helped us out a ton and I couldnt be more appreciative. If I could give them 10 stars I would. Highly recommend!
Date: June 14, 2024
Website: Google
Denise and Shawn were an...
Chris
Denise and Shawn were an absolute pleasure to deal with. The price, and turn around time was incredible. My truck was towed to this location on a Thursday afternoon and the transmission was replaced and finished by Friday 2pm. They checked all my fluids, etc. After dealing with a complete nightmare with the GM dealership and one of the worst weeks of my life. Denise honestly helped us out a ton and I couldnt be more appreciative. If I could give them 10 stars I would. Highly recommend!
Date: June 14, 2024
Website: Google
Great customer service and technicians…...
Catherine Evagelacopoulos
Great customer service and technicians… glad that I decided to bring my truck to them
Date: June 11, 2024
Website: Google
Wanted to say thank you...
Melissa Bell
Wanted to say thank you to Denise - she is kind, professional and knowledgeable. She guided and helped my son while he was unsure what to do while at the side of the highway etc. She was calm and very helpful!!! Thank you Denise!!! ( This is the Whitby North Mr Transmission.)
Date: June 1, 2024
Website: Google
Thank you for getting my...
Michelle Larocque
Thank you for getting my boyfriend truck back to us fast
Date: April 2, 2024
Website: Google
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