{
  "owners": null,
  "title": "Mack recall 21V856 (SC0432): 2021 Granite and LR",
  "url": "https://carsmultiverse.com/recall/21v856/",
  "summary": "Recall 21V856 (Mack): A loss of power steering assist increases the risk of a crash. Mack's own number: SC0432.",
  "excerpt": "Mack Granite (Gr), Mack Lr, model year 2021. Filed by Mack Trucks, Inc. and reported to NHTSA on 3 November 2021. 79 vehicles potentially affected. What the notice says Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite and LR vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist. 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 Mack's own number for this recall: SC0432. That is the number on the owner letter and on the dealer paperwork. 21V856 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: “A loss of power steering assist increases the risk of a crash.” 21V856 Mack Trucks, Inc. Steering:Hydraulic Power Assist:Pump 3 November 2021 2021-2021 MACK GRANITE (GR), MACK LR A loss of power steering assist increases the risk of a crash. Dealers will replace the power steering pump, free of charge. Owner notification letters were mailed on December 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall",
  "register": {
    "authority": "NHTSA",
    "country": "United States",
    "index": "https://carsmultiverse.com/changed/"
  },
  "datePublished": "2026-08-23T22:09:37+00:00",
  "dateModified": "2026-09-16T20:12:03+00:00",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "CarsMultiverse, \"Mack recall 21V856 (SC0432): 2021 Granite and LR\", https://carsmultiverse.com/recall/21v856/, licensed CC BY 4.0.",
  "note": "CarsMultiverse is an independent record, not a safety authority. To act on a recall, use the official register."
}