Things To Know When Considering a Transmission Rebuild (2024)

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A failing transmission can be a real bummer. And because it’s such a vital part of your vehicle’s regular operation, you can’t ignore the problem. There’s also a great chance that the repairs are going to cost some serious coin.

Even so, you’ll need to face your transmission demons head-on so that you don’t kill another part of your car by driving around with bad gears. In some cases, this means a rebuild which, as the name suggests, is the process of repairing and replacing parts of transmission to make it operate as new again.

Rebuilt transmissions can involve major overhauls, where several parts are replaced or repaired, or they can be a simpler process with just a few replacement parts and a good cleaning. No matter which direction you need to go, it’s important to understand what’s happening and what it will cost.

So stay with The Drive’s crack editors and let’s dive in and find out.

Your car may kick out a few error codes when the transmission has problems., Depositphotos

What Causes A Transmission To Need A Rebuild?

Some parts of your transmission can be repaired without dropping it out of your vehicle, but not all parts are as easily accessible. If a component needs repair that cannot be accessed from the vehicle’s underside, the transmission will need to be removed.

Some damage goes beyond the repair of a single component, however. Over time, wear and tear can cause damage to the gears and other components that need tight tolerances to function properly. When this happens, a rebuild is needed to replace the parts with new or remanufactured parts.

What Exactly Goes Into Rebuilding A Transmission

Completely rebuilding a transmission involves removing the transmission and completely disassembling it. Each component is inspected for damage or excessive wear. Parts that are in good shape will be cleaned for use in the reassembled transmission, while any parts that need to be replaced will be taken care of at this point. Clutches, seals, gaskets, and any other wear items will be replaced as well.

What’s The Difference Between a Transmission Rebuild and Overhaul?

There’s no difference. The two terms mean the same thing, but people have taken to using them interchangeably over the years. You should still be asking questions to clarify what you’re actually getting with your transmission rebuild or overhaul to make sure that the repair shop understands the services you’re hoping to receive.

Save transmission repairs for the pros., Depositphotos

Transmission Terms You Should Know

Get educated!

Automatic Transmission

Automatic transmissions are multi-gear transmissions that do not require driver input to change gears.

Manual Transmission

Manual transmissions are multi-gear transmissions that require the driver to change gears while operating the vehicle.

Gears

Gears are used to slow engine output speed and increase torque. Most modern transmissions use a number of gears that range from five to ten.

Clutch

The clutch engages or disengages the powertrain from turning the drive shaft. This allows the driver to shift gears before disengaging the clutch to allow forward motion to continue.

Remanufactured

Remanufactured parts are used parts that have been completely torn down and rebuilt. Any worn or damaged parts are replaced. This process should allow remanufactured parts to be as reliable as a new one.

You'll need to drain the transmission fluid before performing repairs., Depositphotos

EXTENDED WARRANTY COVERAGE MORE … FOR LESS

Things To Know When Considering a Transmission Rebuild (1)

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FAQs About Transmission Rebuilds

You’ve got questions, The Drive has answers!

Q. Is It Better To Buy A Remanufactured Transmission Than Rebuild The Old One?

A. This will depend on a few factors. If the costs of rebuilding a transmission exceed the costs of buying and installing a remanufactured part, that makes the decision a bit easier. But, if there’s ambiguity in what’s actually damaged and in need of repair, it might be best to have the transmission torn down for inspection. That, of course, costs money, but it’s cheaper than buying another gearbox.

Q. Ok, What Is This Actually Going To Cost Me?

A. Again, it depends. Back in 2014, Angie’s List found that the average cost to rebuild a transmission is between $2,800 and $3,800. The site also found that the costs of buying a replacement can cost anywhere between $4,000 to $8,000. Neither is a cheap repair, but it’s easy to see how rebuilding can be the best financial decision.

Q. Can I Save Money While Doing This?

A. The best way to “save money” when rebuilding a transmission is to prevent the need to rebuild in the first place. Regular maintenance and inspections of your transmission and related components will save you big headaches down the road. If you’re thinking about cheaping out on the rebuild itself, think again. You get what you pay for.

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Things To Know When Considering a Transmission Rebuild (2)

Featured Products

You’ve got plenty of choices when it comes to products to help you understand your transmission’s condition. Because of that, The Drive doesn't want to overload you with sales pitches for every product under the sun. We’ve chosen a handful of the products that are affordable, have great reviews, and are useful in caring for and diagnosing transmission issues.

Got a question? Got a pro tip? Send us a note: guidesandgear@thedrive.com

Things To Know When Considering a Transmission Rebuild (2024)

FAQs

How do you know when to rebuild a transmission? ›

Do You Need A New Transmission? Here's How You Can Tell!
  1. Gear Slipping. ...
  2. Sluggish Transmission. ...
  3. Rough Gear Shifts. ...
  4. Gear Grinding. ...
  5. Gearbox Overheating. ...
  6. Grinding Noise from the Gearbox. ...
  7. Fluid Leakage from the Gearbox: ...
  8. Conclusion.

What should be replaced when rebuilding a transmission? ›

A transmission rebuild, as its name suggests, is an overhaul done to a vehicle's transmission to restore it to good working order. This involves replacing or repairing some parts of the transmission, such as gaskets, bands, clutch, electrical work, and seals – as required.

Which transmission part is most often replaced during a rebuild? ›

During a transmission rebuild, the most common parts that will be replaced are the seals, gaskets, and bands. Other key parts will likely also be replaced and all parts of the transmission will be cleaned. This helps the mechanic assess damage overall.

How many miles should a rebuilt transmission last? ›

If a transmission is properly rebuilt by a skilled mechanic, it can often last between 100,000 to 200,000 miles or even more. The key to a long-lasting rebuilt transmission is addressing all the existing problems during the rebuild, using high-quality parts, and ensuring everything is assembled correctly.

What does a full transmission rebuild include? ›

The process of rebuilding the transmission involves removing the transmission from the vehicle, draining the fluid and taking it all apart, cleaning every part, replacing the worn-out parts—including clutch plates and bands, seals, gaskets and solenoids—then putting it all back together again and re-installing it.

What are the cons of rebuilt transmission? ›

Cons:
  • Although rebuilds are more extensive than repairs, they don't offer the same return to factory performance as replacements.
  • While less expensive than a replacement, transmission rebuilds are much more costly than repairs.
Mar 23, 2023

Do I need a new torque converter when rebuilding transmission? ›

(3) Torque Converter The Torque Converter, like the transmission cooler that will be full of debris from the old transmission (which can be cleaned), the torque converter will also contain debris. The difference is that the torque converter can't be cleaned or flushed out and must be included in a transmission rebuild.

Is it cheaper to rebuild a transmission or replace it? ›

Then they inspect, clean and repair all the parts before reassembling and reinstalling the transmission. A rebuild costs about half the price of a transmission replacement—about $2,000 to $3,500.

Do you have to reprogram a rebuilt transmission? ›

In some cases, you may need to reprogram the TCM after installing a used or remanufactured transmission. This is especially true if the used transmission is from a different vehicle or if there have been any modifications to the vehicle's drivetrain.

What else should I replace when replacing a transmission? ›

The torque converter and solenoids will be replaced with new ones. The components that typically require attention are the seals, gaskets, clutch, and bands. It is crucial to ensure that the solenoids are functioning properly as they direct the transmission fluid into the valve body, engaging the correct gear.

Is it better to buy a new or rebuilt transmission? ›

Lastly, rebuilt transmissions will still contain older parts, which may fall into disrepair sooner than anticipated. Alternatively, replacing your transmission may cost more, but you get the benefits of a brand-new transmission free of wear and tear. A new transmission should perform smoothly, seamlessly, and durably.

What is the difference between a transmission overhaul and a rebuild? ›

A transmission overhaul, also called a transmission rebuild, is similar to a transmission replacement in that both require removing the transmission from the chassis and replacing it. But with an overhaul, you don't replace the transmission with an entirely different transmission, but rather rebuild your transmission.

How long does a full transmission rebuild take? ›

Most repairs are fairly quick. Flushing the fluid, sealing, and recalibration can be done within a day. Replacing the shift solenoids takes a day or two. A full rebuild, however, is very time and labor-intensive and will typically take three to four days.

Can I trust a rebuilt transmission? ›

In some cases, a rebuilt transmission may be the best choice. However, you should never let an unqualified mechanic rebuild your transmission, as this will likely cause more harm than good. In this case, it's best to work with a trusted mechanic and have your transmission replaced .

What is the break in period for a rebuilt transmission? ›

How long does the break-in period usually last? - The break-in period typically lasts for the first 500 to 1,000 miles of driving.

Why would a transmission need to be rebuilt? ›

Transmission rebuilds are major transmission repairs. Most repairs are not this involved, so to necessitate a rebuild takes a lot. This is for transmissions that are fully shot, completely overheated, damaged by a collision, or otherwise damaged to the point where most of the transmission no longer functions properly.

Does rebuilding a transmission make it new? ›

A rebuilt transmission will extend the life of your vehicle, because when the worn parts are replaced, the transmission becomes “good as new”. Another benefit is that when it comes time to trade in your car, you'll get a higher price for it if the transmission is still in good shape.

How do I know if my transmission is still good? ›

Time for Transmission Repair? 5 Signs of a Faulty Transmission
  • Burning Smell. A burning smell says a lot about your vehicle's safety and functioning. ...
  • Strange Noises When Your Car is In Neutral. ...
  • Trouble Switching Gears. ...
  • Leaking Fluid. ...
  • Vibrating or Shaking.
Feb 19, 2021

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