The AOD was redesigned with electronic controls in 1992, becoming the AODE. It was mainly intended for the new Modular V8 at first, but it was also adapted to the old AOD bell-housing for vehicles still powered by OHV engines. While the AOD, AODE and early 4R70W share some basic components like oil pans, gear sets (AODs and AODE can be retrofit with 4R70W gear sets), most of the internals are not interchangeable because the 4R70W and AODE use electronic solenoids to shift instead of conventional hydraulics. The transmissions are not interchangeable either, as the AOD only uses a throttle valve cable for operation. The AODE and 4R70W's shift points are controlled by the Powertrain Control Module (PCM) also sometimes referred to as the Electronic Engine Control (EEC).