How Do I Know If My Transmission Needs To Be Replaced?

June 3, 2020 | By Mister Transmission

How Do I Know If My Transmission Needs To Be Replaced?

If you can avoid it, you really do not want to replace your transmission. Transmission replacement is not cheap. However, sometimes it is your best option. But how do you know if your transmission needs to be replaced?

Transmission problems can manifest in dozens of ways. It is always sensible to keep your eye (and ear) out for possible problems so you can spot them before they become so big that they require you to replace your transmission.

Transmissions are intricate pieces of machinery. In fact, they are dozens of different parts of machinery all working in congruence with one another. This means there is a lot that can go wrong. But like with most things, transmission problems start off small before they get big. Only big problems require transmission replacement so it would be wise to nip small problems in the bud.

See patches of red liquid underneath your car as you pull out of your driveway? That is transmission fluid and it means you have a leak. Top up your fluid and visit a transmission shop as soon as possible to avoid further damage. Low levels of transmission fluid can do enough damage that you may need to replace your transmission. Furthermore, listen for funny noises —whirring, humming, buzzing, grinding, etc.— which are symptomatic of transmission problems. Slipping out of gear or difficulty shifting gears are also symptoms of transmission problems.

Do any of these above transmission problems mean that your transmission needs to be replaced?

Not necessarily. Many of these problems can be solved with relatively minor fixes. Sometimes you just need your transmission fluid flushed out and replaced. Other times, the problem part or parts are accessible while the transmission remains in the chassis, meaning they can be swapped out rather easily.

But what if a transmission problem can’t be fixed with new transmission fluid or replacing an accessible part? Does it have to be replaced then?

Maybe. If the transmission techs need to remove the transmission from the body of the vehicle, then you are looking at a more involved repair. Sometimes you can get lucky and the techs will be able to narrow the problem down to one or two components that can be replaced once the transmission is removed. However, some transmissions are so damaged that they need to be replaced altogether. Other times, transmissions can be overhauled, in which each component is removed, inspected, and replaced.

Mister Transmission

At Mister Transmission, we often recommend transmission overhauls, replacing one with another transmission of unknown provenance. But every case is different and you can’t know if replacement is necessary right away. To learn more about transmission replacement, please contact us.

Mister Transmission Team

The Mister Transmission team consists of certified transmission specialists with decades of combined experience in diagnosing, repairing, and maintaining automatic and manual transmissions.

With over 60 years of service across Canada, our experts provide trusted, accurate, and up-to-date automotive advice to help drivers make informed decisions about their vehicles.

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Customer Reviews
Awesome team. Transmission is now...
Yoshipark99
Awesome team. Transmission is now smoother and more responsive. 4L60E full rebuild. Great job and pretty fast. Cole from Tillsonburg
Date: July 18, 2026
Website: Google
One of the best experiences...
Wayne King
One of the best experiences I have at a repair shop. I had transmission problems that I expected would cost hundreds of dollars to fix. Ended up it was just some rust seizing a linkage - they cleaned it up and didn't even charge me anything works fine now and I couldn't be happier - will be recommending them to everyone.
Date: July 18, 2026
Website: Google
Mister Transmission just rebuilt the...
Julie Watton
Mister Transmission just rebuilt the transmission in my sprinter van. Called them on a Monday, Wes diagnosed the problem on Tuesday and van was ready by Friday! Wes was super knowledgeable, provided options and even showed me the problem. Chris at the front desk has excellent customer service! Very happy with the experience.
Date: July 18, 2026
Website: Google
Awesome team. Transmission is now...
Yoshipark99
Awesome team. Transmission is now smoother and more responsive. 4L60E full rebuild. Great job and pretty fast. Cole from Tillsonburg
Date: July 18, 2026
Website: Google
Awesome team. Transmission is now...
Yoshipark99
Awesome team. Transmission is now smoother and more responsive. 4L60E full rebuild. Great job and pretty fast. Cole from Tillsonburg
Date: July 18, 2026
Website: Google
Resolved my issue and provided...
C M
Resolved my issue and provided a loaner car as I was out of town.
Date: July 17, 2026
Website: Google
Amazing experience will definitely recommend....
Les Karapancsik
Amazing experience will definitely recommend. Took their time and easily found the problem that other shops could not find
Date: July 17, 2026
Website: Google
100% reliable. Excellent service deliver...
Jose Duran
100% reliable. Excellent service deliver by true experts
Date: July 17, 2026
Website: Google
We’re from Winnipeg and began...
Tara McLauchlan
We’re from Winnipeg and began having transmission issues just outside of Ottawa. We had our campervan towed to this location, where they went above and beyond with their service. Kristin was friendly and knowledgeable and kept us promptly updated to our repair status. Mike the service tech worked so hard to get us back on the road in a safe and timely manner. This location worked in communication with our Winnipeg location to honor the nationwide warranty, even though we were 6000kms over the warranty threshold. We are so thankful for all their hard work and kindness.
Date: July 17, 2026
Website: Google
Staff were extremely helpful and...
Mark Saigeon
Staff were extremely helpful and informative and gave me the peace of mind I needed. They could have taken advantage of my lack of knowledge but showed great integrity. Thank you.
Date: July 17, 2026
Website: Google
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