Transmission Repair & Service Northeastern Manitoulin and the Islands, 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
Great service and got our...
Bill Davidson
Great service and got our company truck back fast
Date: February 12, 2026
Website: Google
Friendly and good service
Stranded Deep
Friendly and good service
Date: January 28, 2026
Website: Google
Haven't even got the service...
Elliot Cullen
Haven't even got the service done yet and giving 5 Stars! Booked a trans, transfer case, and rear diff fluid change on my old BMW. After calling a couple local shops and speaking to amateurs; mister transmission proactively came to the rescue. Other shops saying "we don't work on those cars" and "just go to the dealership" M.T. booked me in quickly and easily! God bless. Looking forward to picking up my lovely car once it's ready. Shoutout to Sarah and Marc for being super detail oriented and prompt.
Date: January 27, 2026
Website: Google
Prompt, professional and courteous, friendly...
Harry Konowalchuk
Prompt, professional and courteous, friendly service!
Date: January 20, 2026
Website: Google
I had a transmission rebuilt...
Samuel Mendonca
I had a transmission rebuilt over a year ago, after 50,000kms (past the warranty as well), initially I was very disappointed to find that my truck was having issues again so soon, but after dealing with Mark and the other staff at Mister Transmission, they were willing to work with me within reason and cover most aspects of the service. When I first brought my truck in to Mark I was very concerned about the warranty they were providing me as I own a service vehicle that puts on a lot of Kilometres, at the time Mark assured me that they do their best to take care of their customers and when the time came for me to have some more repairs done I was very glad that even a year later Make kept his word and made sure to take care of me as he stated. If you are having issues with you transmission, talk to Mark and make sure just to be straightforward and honest with your issues as they will do the same. Thanks again to Mark and the team.
Date: December 18, 2025
Website: Google
Great service
Jack Waites
Great service
Date: December 1, 2025
Website: Google
Great service and very honest!...
Kim Legault
Great service and very honest! They didn’t hesitate to tell us that our car didn’t need anything but because of that specific situation could’ve easily taken advantage of the situation to make money. Will go there every time now!
Date: November 30, 2025
Website: Google
Dropped our car off yesterday...
Ami
Dropped our car off yesterday for an assessment - we assumed it was a transmission issue. Marc C was very accommodating and super friendly. After the assessment Marc called us to let us know that it was in fact not a transmission issue. When we picked up the car he went over the diagnostic report and it turned out to be ignition coil issues. When we asked what do we our you for that he said - nothing and that he was happy to help us identify what the actual issue was.. .11/10 Great service and an excellent experience.
Date: November 28, 2025
Website: Google
Dropped our car off yesterday...
Ami
Dropped our car off yesterday for an assessment - we assumed it was a transmission issue. Marc C was very accommodating and super friendly. After the assessment Marc called us to let us know that it was in fact not a transmission issue. When we picked up the car he went over the diagnostic report and it turned out to be ignition coil issues. When we asked what do we our you for that he said - nothing and that he was happy to help us identify what the actual issue was.. .11/10 Great service and an excellent experience.
Date: November 28, 2025
Website: Google
I can not thank Mark...
Lauri Mercer
I can not thank Mark Aka (Smiley) enough for helping us. We were traveling from Sault Ste Marie on,when we experienced car trouble. From the minute we walked in the door we had trust in Mark. We were put at ease. He had the car fixed in a day n a half. FANTASTIC place with FANTASTIC staff. I would recommend this business to anyone!!!! Thank you Lauri & Jim ❤️
Date: November 18, 2025
Website: Google
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