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On-board diagnostics. Various views of a "MaxScan OE509" – a fairly typical onboard diagnostics (OBD) scanner, 2015. On-board diagnostics ( OBD) is a term referring to a vehicle's self-diagnostic and reporting capability. In the United States, this capability is a requirement to comply with federal emissions standards to detect failures that ...
Inline-3. 1991–present Daewoo M-TEC/S-TEC (acquired with purchase of Daewoo) 1984–present Suzuki G (designed and built by Suzuki) 1996–present GM Family 0. 2013–present Small Gasoline Engine. 2018–present GM E-Turbo engine. 2020–present LXD engine Small diesel (Opel Models) GM Family 1 inline-four engine.
Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain, providing three forward speeds plus reverse. The Turbo-Hydramatic or Turbo Hydra-Matic (THM ...
1981–1990 TH200-4R. 1982–1993 TH700R4/4L60. Heavy-duty rear wheel drive. 1971–1994 3L80HD (heavy duty version of TH400) Light-duty rear wheel drive. 1969–1998 TH180/TH180C / 3L30 — European/Asian model. Used/manufactured by Holden as the Trimatic. Longitudinal front wheel drive. 1966–1978 TH425 — 3-speed.
OBD-II PIDs ( On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
A Regular Production Option (RPO) is a 3-digit standardized code used by General Motors to designate vehicle options & modifications. RPO codes designate how a vehicle is built, and they've been used on dealership order forms and in assembly plants since at least the 1950s ( see Corvette C1 ). It was originally all numeric and labeled Sales ...
ALDL. ALDL 12 pins connector - front view. 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.
An engine control unit ( ECU ), also called an engine control module ( ECM ), [ 1] is a device which controls multiple systems of an internal combustion engine in a single unit. Systems commonly controlled by an ECU include the fuel injection and ignition systems. The earliest ECUs (used by aircraft engines in the late 1930s) were mechanical ...