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A PCM from a 1996 Chevrolet Beretta. A power-train control module, abbreviated PCM, is an automotive component, a control unit, used on motor vehicles. 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 ...
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, E
Assembly Line Diagnostic Link, Assembly Line Data Link, or ALDL is a proprietary on-board diagnostics system developed by General Motors before the standardization of OBD-2. It was previously called Assembly Line Communications Link or ALCL. The two terms are used interchangeably.
OnStar was formed in 1996 as a collaboration between GM, Electronic Data Systems and Hughes Electronics Corporation.Each of the founding companies brought a specific area of expertise to the enterprise: GM brought vehicle design and integration and a distribution system of millions of vehicles, EDS brought much of the systems development and information management and customer service ...
The most common way to "upgrade" the electronic control unit is using either plug in modules as mentioned above or using a specialist tuner who will use an Onboard Diagnostics Flash tool. These devices generally plug into the diagnostic port although in some cases the reprogramming is done directly on the circuit board. Maps are supplied by tuners.
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.
General Motors Local Area Network (GMLAN) is an application- and transport-layer protocol using controller area network for lower layer services. [1] It was standardized as SAE J2411 for use in OBD-II vehicle networks.
The General Motors ignition switch recalls refers to February 6, 2014 when General Motors recalled about 800,000 of its small cars due to faulty ignition switches, which could shut off the engine while the vehicle was in motion and thereby prevent the airbags from inflating. [1]