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  2. Check engine light - Wikipedia

    en.wikipedia.org/wiki/Check_engine_light

    A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system uses to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).

  3. On-board diagnostics - Wikipedia

    en.wikipedia.org/wiki/On-board_diagnostics

    This OBD-II came in two models OBD-IIA and OBD-IIB. OBD-II standardization was prompted by emissions requirements, and though only emission-related codes and data are required to be transmitted through it, most manufacturers have made the OBD-II Data Link Connector the only one in the vehicle through which all systems are diagnosed and ...

  4. Chevrolet big-block engine - Wikipedia

    en.wikipedia.org/wiki/Chevrolet_big-block_engine

    2001–2007 Chevrolet Silverado/GMC Sierra 2500HD and 3500 (option) 2001–2006 Chevrolet Suburban/GMC Yukon XL 2500 (option) 2001–2002 Chevrolet Express/GMC Savana 3500; 2002–2006 Chevrolet Avalanche 2500 (standard) 2001–2010 Chevrolet Kodiak/GMC TopKick (including U-Haul's 26-foot (7.9 m) truck) Workhorse Class A motorhomes; T-98 Kombat ...

  5. United States vehicle emission standards - Wikipedia

    en.wikipedia.org/wiki/United_States_vehicle...

    Only state which still conduct emission testing dating back to the 1967 model year unlike other states using EPA classification (a few still conduct test for 1968–present (1968+ testing is for jurisdictions using defined EPA standards for vehicle classification since the '68 model year and beyond automobiles must have an exhaust emission ...

  6. Chevrolet Silverado - Wikipedia

    en.wikipedia.org/wiki/Chevrolet_Silverado

    First-generation Chevrolet Silverado 2500HD (2001–02 Regular Cab) The GMT800 Silverado/Sierra 1500 and 2500 pickup trucks were released in August 1998 as 1999 models. The "classic" light-duty GMT400 C/K trucks continued to be produced for the first two years alongside the new models, and the Heavy-Duty GMT400 pickups (alongside the GMT400 SUVs) were continued until 2000, with the new GMT800 ...

  7. California Smog Check Program - Wikipedia

    en.wikipedia.org/wiki/California_Smog_Check_Program

    In 2004, California approved the world's most stringent standards to reduce auto emissions, and the auto industry threatened to challenge the regulations in court. The new regulations required car makers to cut exhaust from cars and light trucks by 25% and from larger trucks and SUVs by 18%, standards that must be met by 2016. [28]

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  9. Emission test cycle - Wikipedia

    en.wikipedia.org/wiki/Emission_test_cycle

    An emission test cycle is a protocol contained in an emission standard to allow repeatable and comparable measurement of exhaust emissions for different engines or vehicles. Test cycles specify the conditions under which the engine or vehicle is operated during the emission test.