The Aisin AW4 is a four-speed automatic transmission used in some ... numerous variations in 2WD and 4WD models. It uses a transmission control unit (TCU) along with valve body solenoids to ...

Some units of the 2021 Corvette Stingray may require a Transmission ... for Transmission Control Module DTC P2781 (Downshift Switch Circuit High). This could result in an automatic failure during ...

Since each of these automatic transmission types uses a Transmission Control Module, we'll focus on how the TCM affects the ...

To convince the transmission control module that a working automatic was still installed and clear the fourteen-odd diagnostic codes, [Dean] put together a block of eight common automotive relays.

If you're a control freak, late-model electronic transmissions are just what you need to modernize your classic car, and if you decide to go that route, a transmission control module is a must-have.

An automatic transmission runs off a TCM or transmission control module that collects data from sensors in the engine, so it knows when to shift. This computer is missing from a manual ...