6L90 Transmission Replacement Info
Are you having problems with your Silverado 1500 transmission? Are you trying to determine if your refurbished 6L90 transmission for your Chevrolet Silverado 1500 should be rebuilt or remanufactured? Let's discuss the difference between a remanufactured and rebuilt transmission.
A "remanufactured" or "reman" transmission is a unit that has had work done on all the original parts to bring the quality level to the standard of a new transmission. Because it is much more thorough, it is commonly considered a "new" transmission. A "rebuilt" transmission only has the problem parts fixed or replaced.
The 6L80 or 6L90 are both six-speed automatic transmissions built by General Motors in Michigan. The main difference between the two is the strength of their internal components. Introduced in 2005, they are similar in design to the smaller 6L45/6L50 manufactured in France. One of the features is clutch to clutch shifting, eliminating one-way clutches that were used on older transmission designs. Then in 2006, General Motors invested several million dollars in expanding their transmission plant in Ohio to produce the 6L80E. This transmission is used in GM vehicles such as: Cadillac CTS, Cadillac Escalade, Cadillac STS, Camaro, Denali, G8, Hummer H2, Sierra Truck, Silverado Truck, Suburban, and Tahoe.
A 6L80E/ 6L90 transmission can develop issues such as: Harsh shifts or delayed shifts, Harsh shifts or delayed shifts from reverse or park, Check engine light goes on, Converter shudder because of flaking of the converter lining, Shudder when in reverse or low, and CAN or TEHCM software malfunction.
Before you make a decision on which transmission to purchase, let's first discuss the reliability of both transmissions. Because rebuilt transmissions are repaired with used components, and while they perform as you would expect them to, the parts are not new ones.
The remanufactured components are re-created with new parts, which essentially makes them like new. A reman transmission is installed in a verified and authorized repair shop, while rebuilt transmissions can be from any repair shop, verified or unverified. A remanufactured transmission will go through a testing process before leaving the repair shop.
So while both rebuilt and remanufactured transmissions might be compatible with your Silverado 1500, a remanufactured product is more reliable and higher in quality, making it more desirable. Also, a remanufactured transmission usually comes with a factory warranty that can span up to three years. The warranty period can be longer and is not affected by the mileage on your vehicle. The warranty for a rebuilt transmission is quite basic, but the repair costs are covered for up to 12 months. But if the transmission fails, you may not be able to have it repaired in any repair shop you choose.
If you are one of those individuals having problems with your transmission, look for Silverado 1500 used 6L90E transmissions "for sale near me." https://reman-transmission.com/transmissions/chevrolet/silverado_1500 The cost will be significantly less than new, and you will find that your vehicle has become more reliable. And installing a remanufactured transmission, opposed to a rebuilt transmission, will also increase your vehicle's value should you decide to trade or sell. https://en.wikipedia.org/wiki/GM_6L80_transmission