4L80E Transmission The 4L80E transmission is another General Motors transmission that was designed for longitudinal engine configurations. This particular series included four forward gears and is an evolution of the turbo-hydramatic 400. This transmission was optioned only in vans, commercial vehicles, the Hummer H1, and Chevrolet or GMC pickups. The 4L80E was later adopted by…

Buick Transmissions Buick is a division of General Motors and is one of the oldest vehicle brands, the first Buick brand vehicle produced in 1899. Common Problems Leaks: transmission fluid is vital to the health of your transmission and you should always be on the lookout for leaks. The absence of fluid, or a fluid…