Transmission Repair & Service Niagara Falls, Ontario

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.

Learn More
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.

Learn More
image-reviews image-reviews
Customer Reviews
Definitely the place to go...
Ian Armstrong
Definitely the place to go and they really know their stuff Good honest people to deal with and will look out for the customers best interests Gave me a price and kept to their word on the price and had my vehicle repaired on time
Date: October 27, 2025
Website: Google
I don’t usually write reviews,...
Mike Nelson
I don’t usually write reviews, but I felt it was important to recognize the level of honesty and integrity shown by Mister Transmission. In an industry where it can be hard to know who to trust, this place truly stands out.I highly recommend Mister Transmission. It's refreshing to deal with people who put integrity first
Date: September 8, 2025
Website: Google
I manage another automotive service...
Frank Iudiciani
I manage another automotive service centre in St. Catharines and I've been recommending this Mister Transmission in Niagara Falls to all of my customers for YEARS! Everyone of my customers came back to me with amazing feedback from this Mister Transmission location. They DO NOT wallet flush people. Keep up the great work guys!
Date: September 4, 2025
Website: Google
Can’t thank Mr transmission enough...
Jessebby Detheridge
Can’t thank Mr transmission enough for all their help. Amazing company, highly recommended, ask for Paul & John specifically.
Date: April 7, 2025
Website: Google
I Talked with Paul at...
Kim Reid
I Talked with Paul at the shop very knowledgeable he did repair on my truck 2018:Chevy Silverado 8 speed. He didn’t up sell same price quote.real nice guy I enjoyed the time spent at shop. Thanks Kim Reid
Date: March 4, 2025
Website: Google
I'm Paul's neighbor and a...
Darryl Dalkeith
I'm Paul's neighbor and a review written about him washing the absorbant down the sewage drain is completely false. I saw him do the clean up of his driveway that got soaked with oil from working on his truck, after he soaked up the oil he shoveled the excess absorbant into the back of his truck then washed the remainder down to the end of this driveway and shoveled that into the back of his truck the only bit that went down the sewer was the dust that could not be shoveled up. It was a completely good professional job he did cleaning up the mess made..I enclosed a picture of the absorbant both wet and dry in the back of his truck to prove this point... read less
Date: September 2, 2024
Website: Google
Paul and John say yes...
Lee Harrison
Paul and John say yes when other shops say they can’t. Nothing is cheap on modern vehicle repairs, but this shop will treat you fair. A true gem of a repair shop.
Date: July 4, 2024
Website: Google
Great service and good prices....
Vladimir Kobil
Great service and good prices. Knowledgeable staff.
Date: June 24, 2024
Website: Google
Went above and beyond to...
Nichole Munavish
Went above and beyond to help diagnose the weird issue I was having! I really appreciate the honesty and kindness as I’ve had so many bad experiences with mechanics in the past. Highly recommend this location!
Date: April 10, 2024
Website: Google
I brought my 2009 Toyota...
Naturally Yours
I brought my 2009 Toyota Rav 4 to the pros at MR TRANSMISSION last week before a long road trip. John and Paul were unbelievably kind and professional. Being a woman even in the new politically correct world we live in can still be intimidating when it comes to taking your car in for a service. Unlike my regular mechanic who I won't be going back to, they were proactive and fair. They cleaned up the issue and put a fresh coat of paint on their work . They were informative during the inspection and didn't down play the issue but also didn't tell me to repair anything that didn't need repairing. Also they didn't jump to worst case scenarios. I find it extremely difficult to trust but felt I was being treated more than fair right from the moment I called for my appointment and they treated me the same way throughout. Fast , efficient and affordable to say the least. Amazing team! Thank you 😊 🙏
Date: March 26, 2024
Website: Google
Mister Transmission Blogs
Recent Blogs
Transmission Shop Near Me: What Drivers ...
Drivers often search for a reliable transmission shop near me when their vehicle
Read More
December 15, 2025
Transmission Repair: How Professional Di...
Transmission problems can start small but quickly grow into costly repairs when
Read More
December 08, 2025
Honda Transmission Replacement: Ensuring...
Honda vehicles have earned their reputation for smooth handling, fuel efficiency, and
Read More
November 28, 2025
Ford Transmission Repair: Professional S...
A Ford vehicle is designed to deliver reliable performance, smooth driving, and
Read More
November 21, 2025
Dodge Transmission Replacement: Keeping ...
A Dodge vehicle is built for strength, durability, and performance. Whether it’s a
Read More
November 14, 2025
Transmission Replacement: Understanding ...
The transmission is one of the most important systems in any vehicle. It controls
Read More
November 07, 2025
Honda Transmission Repair: Proven Soluti...
The transmission is one of the most important systems in your Honda because it
Read More
October 31, 2025
Transmission Rebuild: When It’s The Ri...
When a vehicle’s transmission starts to show problems, it can leave drivers feeling
Read More
October 23, 2025
Ford Transmission Problems: How To Spot ...
Ford vehicles have earned a strong reputation for performance, but transmission
Read More
October 15, 2025
Commercial Transmission Services: Reliab...
Commercial vehicles operate under tougher conditions than personal cars. Delivery
Read More
October 07, 2025