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  2. Idle air control actuator - Wikipedia

    en.wikipedia.org/wiki/Idle_air_control_actuator

    The IAC actuator is an electrically controlled device, which gets its input from the vehicle's engine control unit (ECU). The actuator is fitted such that it either bypasses the throttle or operates the throttle butterfly valve directly.

  3. Engine control unit - Wikipedia

    en.wikipedia.org/wiki/Engine_control_unit

    Delco ECU used in General Motors vehicles built in 1996. An engine control unit (ECU), also called an engine control module (ECM), [1] is a device that controls various subsystems of an internal combustion engine. Systems commonly controlled by an ECU include the fuel injection and ignition systems.

  4. GM 4L60-E transmission - Wikipedia

    en.wikipedia.org/wiki/GM_4L60-E_transmission

    The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. The 4L60E is the electronically commanded evolution of the Turbo-Hydramatic 700R4 , originally produced in 1982.

  5. 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 ...

  6. Powertrain control module - Wikipedia

    en.wikipedia.org/wiki/Powertrain_control_module

    PCM: Power-train control module (Ford, GM, JLR) ECM: Engine control module; Injection control unit (Peugeot, [2] Citroën, Fiat, Alfa, Lancia) DME/DDE: Digital Motor Electronics / Digital Diesel Electronics (BMW, [3] Mini) ECU: Electronic control unit / Engine control unit

  7. Electronic control unit - Wikipedia

    en.wikipedia.org/wiki/Electronic_control_unit

    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.

  8. List of GM transmissions - Wikipedia

    en.wikipedia.org/wiki/List_of_GM_transmissions

    General Motors (GM) is an American car manufacturing company. It manufactures its own automobile transmissions and only purchases from suppliers in individual cases. They may be used in passenger cars and SUVs, or light commercial vehicles such as vans and light trucks.

  9. Turbo-Hydramatic 125 - Wikipedia

    en.wikipedia.org/wiki/Turbo-Hydramatic_125

    This was a later model of the 125 that debuted for 1982 and included a torque converter clutch or TCC. The TCC acts similar to a clutch in a manual transmission vehicle, in that at speeds above 35 MPH a combination of engine vacuum- and temperature-sensing valves, and a dedicated brake switch - and in later models an ECU - activated a solenoid which engaged a clutch physically locking the ...