What Goes Into a Transmission Rebuild?

By Mister Transmission

What Goes Into a Transmission Rebuild

The transmission rebuild is a specific kind of transmission repair. For many transmission problems, the necessary solution is a relatively simple one. Maybe a change of transmission fluid or switching out a solenoid pack. Unfortunately, however, not all transmission jobs can be done so swiftly. Sometimes, a transmission rebuild will be necessary. So what goes into a transmission rebuild?

Transmission repair

As mentioned above, the transmission rebuild is one of only many types of transmission repairs. It is also the most involved type of transmission repair. It’s a type of repair that is not meant to fix every problem. Many problems do not require such an endeavour. A transmission rebuild is necessary either when the cause of a transmission problem cannot be accurately identified or when the damage that a transmission has incurred is total or at least far reaching.

Transmission rebuilds

The first step in a transmission rebuild is the complete removal of the transmission from the body of the vehicle. This is necessary when the part that is thought to be causing the problem is not accessible while the transmission remains within the body of the automobile. When the suspected problematic part is replaced, this might solve the problem. However not all problems are solved so easily.

In some cases a complete rebuild is required. A complete rebuild consists of the removal and disassembly of the transmission in its entirety. Every part is inspected for wear and damage, and then it is cleaned in a special cleaning solution, or it is 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 should also be replaced, often with a re-manufactured one.

Technicians will also check technical service bulletins to see if the auto manufacturer recommends any modifications to correct design flaws 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 see, the transmission rebuild is a significant undertaking and takes hours of labour to complete. But it is a holistic approach; any problems your transmission has been experiencing are bound to be addressed through this process. The transmission rebuild should add a number of years on to the life of your transmission.

Rebuild or overhaul

You may have heard of transmission overhauls before. If so, you’re probably asking yourself what the difference is between a transmission rebuild and a transmission overhaul is? Well, that’s a simple question to answer. A transmission rebuild is a transmission overhaul; they mean the same thing.

If your transmission requires a rebuild, you have two options. The first is to remove your existing transmission and rebuild 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 re-manufactured.

However, used transmissions often have questionable histories that could create a whole new slew of issues. New transmissions, meanwhile, are mostly aftermarket transmissions billed as new but are in fact rebuilt transmissions with new parts.

Contact us

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

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Customer Reviews
Gus was very professional and...
Mike Long
Gus was very professional and took the time to patiently review a number of documents that were provided by the dealership so that I fully understood all the codes being displayed with respect to recalls from Dodge. He was very approachable and forthcoming in answering all my questions.
Date: April 21, 2025
Website: Google
Absolutely GREAT service. Honest and...
Paula Cziranka
Absolutely GREAT service. Honest and efficient- communicates exactly what is happening and your options. I can’t say enough about how much I appreciate their service.
Date: April 20, 2025
Website: Google
While on vacation our transmission...
David Janiszewski
While on vacation our transmission failed as soon as we arrived from Ohio. Ken and team sourced a transmission, stayed after hours and Ken himself came in on a holiday morning so we could drive our car home rather than me having to drive back 6 hours one way the following week.Communication throughout the process was excellent and the customer service was second to none. Highly recommend this shop. Excellent experience over all.
Date: April 20, 2025
Website: Google
Brought my 06 mitsu lancer...
Isaiah Presingular
Brought my 06 mitsu lancer in with a 4th gear popout and slipping clutch, a mechanic took the car out for a test drive and diagnostic free of charge and the gentleman at the front desk went above and beyond to take care of me with part sourcing and extremely good pricing. Five business days (realistically just 3 as they had to wait for some parts to arrive), a swapped transmission and new clutch later, and now she goes through all the gears perfectly, absolutely no issuesHighly recommend, you can't beat the price to workmanship you get here, mechanics we're super chill and very qualified, everyone there takes pride in their work and they should, very impressed 👍
Date: April 18, 2025
Website: Google
I was in the area...
Dupuis Family
I was in the area and had an issue with my Hyundai Tucson shifting. I called and the Manager - Jason offered to squeeze me in. Jason listened to my complaints and with his expert trained staff were able to diagnose and fix the problem immediately. They had me on my happily way in no time. Thanks guys!
Date: April 16, 2025
Website: Google
Very awesome customer service!!! Very...
Kelsey Larsen
Very awesome customer service!!! Very quick and easy to get in and out for services. Was supposed to have a refurbished tranny put in my car but it was a brand new one they replaced with in the end!! Thankyou soooooooo much. I will forever send any and all that need their tranny or driveline diagnosed to you guys.
Date: April 16, 2025
Website: Google
After talking with Kris on...
Chris Richards
After talking with Kris on the phone, I felt comfortable that he knew the particular issues related to a 24-year old (2001) 4R100 Ford transmission, coupled with a 7.3 diesel, and gained my trust that they had the knowledge and expertise to overhaul it. I questioned him in advance about the parts they would use and the staff member that would do the work. Was a good experience. He knew that I used the truck for trailer-towing and recommended some specific parts/upgrades for hauling. I'll be towing across Canada this year, and if you don't see any further comments or a rating less than 5-star, assume that the transmission is tugging away nicely without issues. Thanks Kris and Dawn.
Date: April 15, 2025
Website: Google
Great guys, never had an...
Ashley Wilson
Great guys, never had an issue here, friendly staff that know what they are doing 👍
Date: April 15, 2025
Website: Google
This is a fantastic team...
Volodymyr Brykanov
This is a fantastic team of true professionals! Ken is not only a great person but also an incredibly knowledgeable mechanic. Highly recommend their services!
Date: April 15, 2025
Website: Google
Thanks to Raman and his...
G W
Thanks to Raman and his team for taking care of fixing our van. Would highly recommend this shop. They are trustworthy, honest and do great work.
Date: April 15, 2025
Website: Google
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