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  2. Transmission control unit - Wikipedia

    en.wikipedia.org/wiki/Transmission_Control_Unit

    The typical modern TCU uses signals from engine sensors, automatic transmission sensors and from other electronic controllers to determine when and how to shift. [2] More modern designs share inputs or obtain information from an input to the ECU, whereas older designs often have their own dedicated inputs and sensors on the engine components.

  3. Electronic control unit - Wikipedia

    en.wikipedia.org/wiki/Electronic_control_unit

    An ECU from a Geo Storm An electronic control unit ( ECU ), also known as an electronic control module ( ECM ), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle .

  4. On-board diagnostics - Wikipedia

    en.wikipedia.org/wiki/On-board_diagnostics

    GM's ALDL (Assembly Line Diagnostic Link) is sometimes referred to as a predecessor to, or a manufacturer's proprietary version of, an OBD-I diagnostic starting in 1981. This interface was made in different varieties and changed with power train control modules (aka PCM, ECM, ECU). Different versions had slight differences in pin-outs and baud ...

  5. Powertrain control module - Wikipedia

    en.wikipedia.org/wiki/Powertrain_control_module

    It is generally a combined controller consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the PCM, the TCU, and the Body Control Module (BCM), for a total of three separate computers. These automotive computers are generally very reliable.

  6. General Motors ignition switch recalls - Wikipedia

    en.wikipedia.org/wiki/General_Motors_ignition...

    A spokesman for GM, Alan Adler, said that he didn't know how many replacement parts had been shipped to dealerships, or when the majority of parts would be available. [62] Some cars received new tumblers, while others had their original keys (if remaining available) had a plug glued in place to make the hole where the keyring goes smaller.

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  9. Jeep Grand Cherokee - Wikipedia

    en.wikipedia.org/wiki/Jeep_Grand_Cherokee

    The Grand Cherokee's origins date back to 1983, when American Motors Corporation (AMC) was designing a successor to the Jeep Cherokee. [3] Three outside (non-AMC) designers—Larry Shinoda, Alain Clenet, and Giorgetto Giugiaro—were also under contract with AMC to create and build a clay model of the Cherokee XJ replacement, then known as the "XJC" project. [4]