Professional Transmission Rebuilding in Lee's Summit, MO

When transmission damage goes beyond what a simple repair can fix, a full rebuild can often restore your transmission without the cost of replacing the entire unit. At Gus's Gears, transmission rebuilding is done entirely in-house, which means our own technicians control every part of the process from the moment your transmission comes out of the vehicle to the moment it goes back in.


Here's what that looks like in practice: over 50 years of transmission experience, ASE and ATRA-certified technicians, in-house rebuilding on every job, experience with domestic and foreign makes and models, a nationwide warranty that travels with you, and an honest diagnosis before we ever recommend major work. If you're trying to figure out whether your transmission needs to be rebuilt, or you already know it does and you're looking for a shop you can trust with it, you're in the right place. Give us a call and we’ll be happy to schedule a free diagnosis for you.

Call 816-603-2226

What Does Rebuilding a Transmission Mean?

A transmission rebuild is a specific process, and it's worth understanding what it actually involves before you commit to one. Rebuilding generally means:

  • Removing the transmission from the vehicle
  • Disassembling it completely
  • Inspecting every internal component
  • Identifying which parts are worn or damaged
  • Replacing the necessary components and seals
  • Reassembling the transmission
  • Testing it to confirm proper operation


That's an important distinction, because a rebuild isn't the same thing as repairing one failed part, and it isn't the same as replacing the entire transmission with a new or remanufactured unit. It sits in between: a full internal restoration of the transmission you already have.

Your Transmission Is Rebuilt Right Here at Gus's Gears

A lot of shops that offer transmission rebuilds send the actual work out to a third party. Gus's Gears doesn't. Every transmission rebuild we perform happens right here in our shop, by our own technicians, from start to finish.

Why In-House Transmission Rebuilding Matters

Keeping the entire rebuild in-house gives us a level of quality control that outsourcing simply can't match. Our technicians are the ones who disassembled your transmission, so they know exactly what they found and why each replacement part was chosen. There's direct oversight over every step of disassembly and reassembly, and no mystery about who actually performed the work on your vehicle. It also means better communication with you, because the person explaining your rebuild is the same person who did it. One shop is responsible for the entire process, start to finish, which is exactly how it should be.

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What Goes Into Rebuilding a Transmission?

What gets replaced during a rebuild will depend on what our technicians find once the transmission is disassembled. We find that rebuilds are not identical, because transmissions don’t fail in the same way. Depending on what we find, a rebuild can involve replacing:

  • Seals
  • Gaskets
  • Clutches
  • Bands
  • Bushings
  • Bearings
  • Filters
  • Other worn or damaged internal components


Keep in mind that not every rebuild requires replacing every part on this list. The transmission is disassembled and evaluated internally first, which allows our technicians to address exactly what's worn or failed, rather than replacing parts that don't need it.

How Do You Know If Your Transmission Needs to Be Rebuilt?

Certain symptoms are a strong signal that your transmission needs attention and possibly a rebuild. Common warning signs include:

  • Severe or frequent gear slipping
  • Hard or delayed shifts
  • Grinding or unusual noises
  • The vehicle struggling to engage
  • Burnt-smelling transmission fluid
  • Metal contamination in the fluid
  • Repeated transmission problems that keep coming back
  • Signs of significant internal component damage


If any of these sound familiar, it's worth having your transmission looked at by a shop that specializes in transmissions before the problem gets worse.

Symptoms Alone Don't Tell You Whether You Need a Rebuild

Here's the part that surprises a lot of customers: a slipping transmission doesn't automatically mean you need a rebuild. Some of the same symptoms that suggest major internal damage can also come from smaller, less expensive issues. That's why we provide a free diagnosis before any recommendation at our shop, not after.


Not sure if you need a transmission rebuild? Let our transmission specialists find out. Book your free diagnosis today.

We Diagnose the Problem Before We Recommend a Rebuild

This is one of the biggest reasons customers choose Gus's Gears for transmission work. Some symptoms that sound catastrophic, like hard shifting or a warning light, can actually trace back to a bad solenoid, a failing sensor, worn seals, low or degraded fluid, or an electronic control issue rather than internal transmission damage. Every one of those is a repairable problem, not a rebuild.


We would prefer to identify a minor repair rather than sell you an expensive rebuild you don't actually need. That honest philosophy shapes every diagnosis we perform, and it's a big part of why customers keep coming back to us for transmission work.

Transmission Rebuilding for Different Transmission Types

As we stated previously, not every transmission fails the same way, and not every type of transmission is rebuilt the same way either. There are different types of transmissions, and each is handled differently.

Automatic Transmission Rebuilds

Automatic transmissions rely on internal clutch packs, hydraulic pressure, and electronic controls working together, which makes them one of the more complex systems in your vehicle. When shifting problems show up, they can stem from worn clutch packs, hydraulic issues, or a combination of mechanical and electronic failures. Our technicians are experienced with the full range of automatic transmission designs on the road today.

Manual Transmission Rebuilds

Manual transmissions fail differently. Worn gears, damaged synchronizers, and bearing wear are common culprits behind grinding, popping out of gear, or difficulty shifting. A manual transmission rebuild addresses that internal wear directly, restoring the smooth, precise shifting the transmission had when it was new.

CVT Transmission Service & Major Repair

CVTs are a different animal, and we're upfront about that. Not every CVT problem is a candidate for a traditional rebuild, and we won't tell you otherwise just to sell a service. What we will do is properly diagnose what's going on with your CVT and walk you through the repair or replacement option that actually makes sense for your vehicle.

Your Rebuilt Transmission Is Backed by a Nationwide Warranty

Every transmission we rebuild or replace at Gus's Gears is backed by a nationwide ATRA warranty, honored at participating transmission shops across the country. In practical terms, that means your coverage doesn't stop at the Lee's Summit city limits. If you run into an issue while traveling, you have options beyond driving straight back to us. It's peace of mind that travels with your vehicle.

What to Expect When Gus's Gears Rebuilds Your Transmission

We have a six-step process that we follow with every rebuild:

  1. Diagnose. We determine exactly what's wrong before recommending anything.
  2. Remove & Disassemble. We pull the transmission and open it up to access every internal component.
  3. Inspect. Our technicians identify every worn, damaged, or failed part inside.
  4. Rebuild. We replace the components that need it and reassemble the unit with precision.
  5. Reinstall. The rebuilt transmission goes back into your vehicle.
  6. Test. We verify proper operation before your vehicle goes back to you.

Find Out If Your Transmission Can Be Rebuilt

Don't commit to a rebuild until you know exactly what's wrong. Let the transmission specialists at Gus's Gears diagnose the problem, walk you through your options, and help you decide whether repair, rebuilding, or replacement makes the most sense for your vehicle and your budget.


Call us today at (816) 603-2226 or book an appointment online. We proudly serve Lee's Summit, Blue Springs, Independence, Raytown, Grain Valley, Warrensburg, and the surrounding communities.

Transmission Rebuild FAQs

  • How much does it cost to rebuild a transmission?

    Rebuild costs vary based on your vehicle's make and model, the transmission type, and how much internal damage is found once it's disassembled. We provide a clear, itemized estimate after diagnosis, before any rebuild work begins.

  • How long does a transmission rebuild take?

    Most transmission rebuilds take several days to complete, depending on the extent of the damage and parts availability. We'll give you an honest timeline upfront and keep you updated throughout the process.

  • Is it cheaper to rebuild or replace a transmission?

    It depends on the vehicle and the extent of the damage. In many cases, rebuilding is more cost-effective than a full replacement, but a severely damaged transmission or an older, high-mileage vehicle may make replacement the smarter option. We'll compare both for your specific situation.

  • Is a rebuilt transmission reliable?

    Yes, when it's done correctly. A properly rebuilt transmission, with worn components identified and replaced and the unit carefully reassembled and tested, can perform reliably for years. That's exactly why we keep the entire process in-house.

  • How long should a rebuilt transmission last?

    A properly rebuilt transmission can provide many years of reliable service, but its lifespan depends on the vehicle, the quality of the rebuild, driving conditions, maintenance, and how the vehicle is used. 

  • What's included in a transmission rebuild?

    It depends on what our technicians find during disassembly and inspection. A rebuild can include new seals, gaskets, clutches, bands, bushings, bearings, and filters, along with any other components found to be worn or damaged.

  • Is it worth rebuilding a high-mileage transmission?

    Often, yes, especially if the rest of the vehicle is in good condition and worth continuing to invest in. We'll give you an honest read on whether a rebuild makes financial sense for your specific vehicle rather than assuming it automatically does.

  • What's the difference between rebuilt and remanufactured transmissions?

    A rebuilt transmission is your original unit, repaired and reassembled. A remanufactured transmission is a separate unit restored through a standardized process and installed as a replacement. Both are legitimate options, and the right one depends on your vehicle and situation.

  • Can an automatic transmission be rebuilt?

    Yes. Automatic transmission rebuilds are one of the most common services we perform, addressing everything from worn clutch packs to hydraulic and electronic issues.

  • Does Gus's Gears rebuild transmissions in-house?

    Yes, every rebuild is performed in-house by our own ASE and ATRA-certified technicians. Nothing is outsourced.

  • Is my rebuilt transmission covered by a warranty?

    Yes. Every transmission we rebuild or replace is backed by a nationwide ATRA warranty, honored at participating shops across the country.