Image Gallery: Transmissions  6L50 transmission Bill
Pugliano/Getty Images The 6L50 transmission is a Hydra-Matic
six-speed rear and all-wheel drive automatic transmission
produced by GM. See more transmission pictures.  ­If you have
ever driven a car with an automatic transmission, then you know
that there are two big differences between an automatic
transmission and a manu­al transmission:    • There is no clutch
pedal in an automatic transmission car. Next Up  Both the
automatic transmission (plus its torque converter) and a manual
transmission (with­ its clutch) accomplish exactly the same
thing, but they do it in totally different ways. It turns out
that the way an automatic transmission does it is absolutely
amazing!  In this article, we'll work our way through an
automatic transmission. We'll start with the key to the whole
system: planetary gearsets. Then we'll see how the transmission
is put together, learn how the controls work and discuss some of
the intricacies involved in controlling a transmissi