[Part Number] /. [Fitment] for 4L80E 4L85E transmissions 1991-1993. [Pros] Easy to install, manufactured according to the precise dimensions, fully adapted.. [Function] A standalone controller has the ability to perform all of its own engine monitoring and control functions from a single box. It does not require any outside assistance from body or chassis modules. As such, they are particularly well suited to race cars, hot rods, and classics where these outside modules seldom exist..
