What Is An Automatic Transmission Rebuild?

November 3, 2022 | By Mister Transmission

What Is an Automatic Transmission Rebuild?

Learn how an automatic transmission rebuild works, when these rebuilds are necessary, and the benefits of a rebuild over a complete transmission replacement.

What Is An Automatic Transmission Rebuild?

An automatic transmission rebuild, also called a transmission overhaul, is the meticulous rebuilding of a transmission piece by piece. Rebuilds are necessary when a transmission has experienced a catastrophic failure. When a transmission is thoroughly damaged, a technician may decide that replacing a few parts won’t solve the problem. Sometimes technicians can’t find the source of a problem, and so they need to inspect every component within the transmission.

In such scenarios, a technician might give you two choices. They’ll say they can replace your transmission entirely with a completely different one, or they can replace each damaged part individually. Many car owners initially prefer the transmission replacement option. It’s simpler, and it seems like it should be faster. At Mister Transmission, our technicians usually recommend a transmission rebuild, though.

Why Is A Transmission Rebuild Better Than A Transmission Replacement?

Replacing a transmission with a totally new one seems like a great option, until you realize that, despite how they’re marketed, these transmissions are rarely ever “new”. They’re typically aftermarket transmissions that have been rebuilt themselves. You don’t necessarily know where they came from and who did the work. And you certainly don’t know the provenance of each individual part. These components may not even be compatible with one another.

If you replace your transmission, you really don’t know what you’re getting. This can cause major problems in the future. Why replace a broken transmission with another malfunctioning one? It doesn’t make sense. That’s why we typically recommend a transmission rebuild to our clients.

The Process Of Rebuilding A Transmission

When the technicians at Mister Transmission perform a rebuild, they remove the transmission from the body of the vehicle and take it apart piece by piece. They inspect each individual part. They replace damaged parts and clean the operational parts in a special solution. As a matter of course, they replace all parts that have friction surfaces, such as bands and clutches, as well as all seals and gaskets. They also replace the torque converter, usually with a remanufactured one. At the end of a transmission rebuild, you have an automatic transmission that may not be completely new, but it’s at least one that’s completely certain to function properly. It’s a lot of work, but it gets the job done.

Come To Mister Transmission For Any Transmission Service Or Repair You Need.

At Mister Transmission, we can overhaul and rebuild your transmission. Please get in touch with us today to schedule a transmission inspection, maintenance service, or repair.

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Customer Reviews
Called to book an appointment...
Jack M.
Called to book an appointment few days prior, I came in with the part and needed a seized bolt removed, possibly drilled and tapped. They got to it the next day, and only charged me 1 hour of labour. Very pleased and will be returning for major transmission work in the future. Highly recommend them. (Toyota Tundra 2012)
Date: March 18, 2026
Website: Google
Great service, even a free...
Dappa 1112
Great service, even a free diagnostic. I’d give them 6 stars if I could
Date: March 17, 2026
Website: Google
I recently had my vehicle...
Magesh Pillay
I recently had my vehicle serviced at Mr. Transmission in Red Deer, and I can’t recommend them highly enough. From start to finish, the experience was seamless and professional.Here are a few reasons why they stand out:Communication: Their updates were both on time and accurate. I never had to wonder about the status of my repair; they kept me informed every step of the way.Expert Advice: They provided great, honest advice that actually felt tailored to my situation rather than just a sales pitch.Pricing: The costs were very effective and fair. It’s refreshing to find a shop that balances high-quality work with competitive pricing.Customer Service: The team was incredibly friendly and easy to deal with. They made what is usually a stressful situation much more manageable.I will definitely be returning for any future needs and highly recommend them to anyone in the Red Deer area looking for reliable, transparent, and friendly service.
Date: March 17, 2026
Website: Google
serviced my ol' domestic x-over....
J. S.
serviced my ol' domestic x-over. made me read up on the matter. got to appreciate the complexity of hydraulics & kinetics involved in the transmission system. these gents parent-&-son can listen, relate/empathize, perform & deliver. doing the replacement itself is extremely tedious. a personalized approach they both do. Ken, an ex-aviator hobbyist, & his son Chris, a hands-on specialist, are like 2 gears in synchrony (some comments are a bit mean). read the way they reply to the negatives - tells me their character. professionals. Merci!
Date: March 17, 2026
Website: Google
Excellent establishment with exceptional employees.
Don King
Excellent establishment with exceptional employees.
Date: March 17, 2026
Website: Google
Well I didn't expect the...
Jim Harvey
Well I didn't expect the amazing service I got when I went to Mr Transmission. I explained my issue to Julie at the front counter and she got a technician from the back named Mike to help me. He fixed the problem within minutes and was very knowledgeable. I will definitely return here if I need help to see Julie and Mike. Well done guys. I would recommend this location at Walker and Tecumseh to anyone.
Date: March 17, 2026
Website: Google
I've already had good service...
Daniel Johnson
I've already had good service here. I've dealt here for over ten years and the quality of the work and service is always good
Date: March 17, 2026
Website: Google
Took my truck in for...
Erika
Took my truck in for a transmission repair and the team was able to get me in really quickly, in less than a week. They had a unit on the shelf and saved my Christmas trip! Big shout out to the entire team for their amazing customer service, they kept me informed throughout the whole process. Love my truck!
Date: March 17, 2026
Website: Google
I take my car to...
Tia Grills
I take my car to Brad first, every single time. Brad has saved me so much grief, time, and money. I earnestly recommend this business to all of my friends and family. Now I would like to recommend them to the strangers of Google. Do yourself a favour and come here. Brad has eloquently frankensteined my car that would’ve been put down a while ago without him. Thank you Brad!
Date: March 17, 2026
Website: Google
Honest and trustworthy also great...
Shaun Gracie
Honest and trustworthy also great prices.
Date: March 17, 2026
Website: Google
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