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.

Mechanic carrepair starting carcar on the road issues


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.

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Customer Reviews
I am very pleased with...
Charlie Stock
I am very pleased with the quality repair and customer service. Matt was very honest in the costs associated with rebuilding my transmission. In fact after experiencing a problem after the repair he was in fact very thoughtful in making things right even though the fault was not with Mr Transmission. I highly recommend Matt and Mr Transmission with any transmission problems you may have,
Date: October 22, 2020
Website: Google
We bought a rebuilt 2014...
John Arnold
We bought a rebuilt 2014 Caravan and had driven it without issue for five years.A few weeks ago we noticed transmission fluid on the driveway and that in the morning it was taking about a minute to go in to drive.I phoned around to a few transmission shops, most of whom wanted a preliminary fee to scan and look at the issue which would come off the bill if I let them do the work,I then called Mr. Transmission on Centennial and talked to Steve. Steve told me that an inspection was free.I told Steve I knew little of how a transmission worked and did'nt know who to trust on this issue- he guarenteed me he was an honest trustworthy business man who would give me the straight run down on my car.As it turns out my transmission was in very poor condition and needed major work to correct.Steve gave me an approximate estimate and by no means is this work inexpensive, however his estimate was fair and thorough.As the work progressed, other issues came forward. Steve called me on these and explained the problems with no pressure for him to perform the extra work, but recommendations on why it should be done and the reason to have it done while the transmission was already pulled out of the vehicle.There were many things Steve looked after that saved me cost in this repair and he made me feel as though my satifaction to his repair was his top priority.The repair was completed and done properly. Steve's assurance of quality and cost was adhered to and done with courtesy and professionalism.I stronly advise anyone who needs transmission service done to call Steve first and save yourself future grief and cost from other repair shops- this is a major repair and you need someone you can trust to do the job- call Steve.John Arnold
Date: October 22, 2020
Website: Google
Did my work with Georgio...
Cynric Barretto
Did my work with Georgio he was very honest and understanding, he replaced my clutch and rear main seal. Also he gave me the best bang for my buck, this shop for sure deserves a 5 star rating with the quality of work they do.
Date: October 22, 2020
Website: Google
Mister Transmission were professional and...
Stasha Wdrts
Mister Transmission were professional and accurate to their estimates. They went the extra mile to work with me during the repairs. And when there was a setup, they arranged a rental for the weekend.Fantastic service! Great people! Trustworthy and caring.
Date: October 22, 2020
Website: Google
Brought my truck in to...
C Pilsner
Brought my truck in to have the transmission looked at and Robin was very knowledgeable about the vehicle. Also very thorough about what work was performed and why. Solid service.
Date: October 22, 2020
Website: Google
Fantastic, Professional and Honest Service,...
John Ferrara
Fantastic, Professional and Honest Service, you will find no better than Dan and Lorenzo. I highly recommend them for all your Transmission and Axle needs.
Date: October 21, 2020
Website: Google
I received prompt and friendly...
Troy Russell
I received prompt and friendly service and my transmission was fixed at a fair price. Thank-you.
Date: October 21, 2020
Website: Google
Denise and Shawn went above...
Richard Marcotte
Denise and Shawn went above and beyond to help us out. Our transmission died on the 401 and they had us repaired in a day.
Date: October 20, 2020
Website: Google
I baught a lemon and...
Adam Jess
I baught a lemon and they helped me get back on the road as quick as possible without killing my wallet. Will be a repeat customer 👌
Date: October 19, 2020
Website: Google
Excellent service. Dealt with Ray...
Avps Delivery
Excellent service. Dealt with Ray for a long time!Honest shop.
Date: October 19, 2020
Website: Google
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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.

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