What is a transmission overhaul?

By Mister Transmission

transmission overhaul

As with many components of your automobile, the earlier you spot an issue with your transmission and bring it in for a repair, the greater the chance that the repair will be relatively quick and simple. Of course, it is not always easy to identify transmission problems nor can all problems be, “nipped in the bud”, so to speak. Nevertheless, it is always best to bring your vehicle in for an inspection and possible repair at the first sign of trouble.

If you don’t, (and, sadly, sometimes even if you do) you could be facing a transmission overhaul. A transmission overhaul is a very detailed and involved type of repair. Just what goes into it can be complicated, so this article will endeavour to explain the details of a transmission overhaul.

Transmission repair

The truth is that a great deal of transmission repairs can be done relatively painlessly. It’s impressive how many problems can be resolved by topping up or changing out the transmission fluid as well as maybe repairing a leak. But this is not a catchall; there are a number of transmission problems that this won’t repair.

Sometimes, a part needs to be replaced. Skilled technicians can often identify which part it is by running various tests and diagnostics, both physical and digital in the case of computer controlled transmissions. There are a number of parts that are accessible without requiring the removal of the complete transmission from the body of the vehicle.

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. And of course, there are many parts that are not accessible. In these cases, you’re looking at a complete overhaul.

Transmission overhaul

A transmission overhaul (also known as rebuilding a transmission) requires the removal and disassembly of the transmission in its entirety. Every part of the transmission is inspected for wear and damage, and then it is 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 re-manufactured 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.

As you can tell, a transmission overhaul is serious business. It is not a first resort nor is it a quick and simple job. Responsible technicians will only recommend a transmission overhaul if the problem your transmission is experiencing is a severe or unknown one. However, the plus side of a transmission overhaul is that it is so complete that it often prevents the development of any future serious transmission problems for a long time to come.

Contact us

If you have any questions about transmission overhauls or would like to bring your vehicle in for a transmission repair, please contact us today and we’d be happy to help you out

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Raven Nicolay
Highly recommend Mister Transmission! From my first phone call, Dawn was incredibly knowledgeable—she was nearly able to diagnose the issue just over the phone. To confirm, they scheduled me in the same day for a test drive and diagnostic. Chris promptly provided clear options and pricing estimates, ensuring I knew what to expect. Before I left, he confirmed parts availability and even offered a helpful recommendation for a rental car while mine was being serviced.I was relieved to receive good news and that the more affordable repair option was the solution. While it can be a little difficult to get through to them due to how busy they are, they genuinely do their best to respond promptly. When a minor issue came up shortly after, they got me back in right away and resolved it quickly.Thanks again to the whole team for the excellent service!
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Trevor Fairweather
Wes solved the engine problem in 1 day, and he actually troubleshot the problem. This was after three competing garages did not solve the problem.Thank you Wes
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Daryle Clements
Thank you so much for your professional excellent service today very nice people to deal with, I wouldn't take my tranny troubles anywhere else other than you guys
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Very good service
Fidel De
Very good service
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Employees were very helpful,Very fast and efficient service
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The front person and mechanic...
Cynthia Saunders
The front person and mechanic were awesome. Checked oil level, added and identified the problem quickly. Was very impressed with the service received. Do recommend checking them out if having issues with your transmission
Date: April 30, 2025
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Nice people to deal with....
Laura Tory
Nice people to deal with. Good service.
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I went in for a...
Toby Collins
I went in for a tire changeover, and they always look over my car making sure it’s in tip top shape. I needed a few other things this time, as they were definitely due. Very pleased how they take care of me and my car. Highly recommend! I’ve been going here for years.
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I am fearful of transmission...
Paul Legeny
I am fearful of transmission problems as they are usually very costly. I took my Jeep Cherokee to Luke's shop on Kennedy Road South. He took it for a test drive, ran diagnostics and checked the transmission fluid. He agreed that there was a hesitation when shifting out of first and second gears but noted that it gets better when it warms up. Diagnostics revealed an error code which was out of his scope as it was not a transmission issue. The fluid was good and he suggested that I take it to another shop to address the error code and bring the car back and he will have another look at it. When I asked how much for his services, no cost at all to me. Thank you Luke...I really appreciate your honesty and you truly are an ambassador for Mr. Transmission!
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Ken 非常专业,推荐!
David Shih
Ken 非常专业,推荐!
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