{
  "owners": null,
  "title": "GM recall 21V496: Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 2500 and 1 more (2017 to 2019)",
  "url": "https://carsmultiverse.com/recall/21v496/",
  "summary": "Recall 21V496 (General Motors): An electrical short-circuit can increase the risk of a fire. General Motors's own number: N212329840.",
  "excerpt": "Chevrolet Silverado 2500, Chevrolet Silverado 3500, Gmc Sierra 2500, Gmc Sierra 3500, model years 2017 to 2019. Filed by General Motors, LLC and reported to NHTSA on 1 July 2021. 338,020 vehicles potentially affected. What the notice says General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500 and 2017-2019 GMC Sierra 2500 and 3500 vehicles equipped with a Duramax diesel 6.6 liter engine and an optional engine-block heater cord. An electrical short-circuit may occur in the engine-block heater cable or in the terminals … Is your vehicle included? Check with your VIN at NHTSA , or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on. CarsMultiverse / Recalls General Motors's own number for this recall: N212329840. That is the number on the owner letter and on the dealer paperwork. 21V496 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways. Answered from the register this site holds. NHTSA is the record to act on. What the authority says can happen if this is not fixed: “An electrical short-circuit can increase the risk of a fire.” 21V496 General Motors, LLC Equipment:Electrical:Engine Block Heater 1 July 2021 2017-2019 CHEVROLET SILVERADO 2500, CHEVROLET SILVERADO 3500, GMC SIERRA 2500, GMC SIERRA 3500 An electrical short-circuit can incre",
  "register": {
    "authority": "NHTSA",
    "country": "United States",
    "index": "https://carsmultiverse.com/changed/"
  },
  "datePublished": "2026-08-23T21:54:06+00:00",
  "dateModified": "2026-09-16T19:33:25+00:00",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "CarsMultiverse, \"GM recall 21V496: Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 2500 and 1 more (2017 to 2019)\", https://carsmultiverse.com/recall/21v496/, licensed CC BY 4.0.",
  "note": "CarsMultiverse is an independent record, not a safety authority. To act on a recall, use the official register."
}