The cost of replacing the transmission ranges from $3,500 to 5,000. The transmission replacement cost includes replacing the whole piece of equipment. It's sometimes referred to as remanufacturing your transmission. However, this is not the same as the cost of replacing a transmission solenoid. New transmissions are rarely available on the market; you'll be buying a rebuilt transmission (also known as used). Rebuilt transmissions aren't bad, but you should ensure it's thoroughly examined, and it might save you money because a new transmission is expensive. When you replace the transmission, all parts are replaced rather than just the worn-out ones. It's usually only done when the transmission can't be saved any other way. Since it will be updated to the factory settings, this operation should always be done in a controlled environment. It is well-known for being incredibly costly.