{"source":"nhtsa","country":"us","campaign":"21V856000","date":"2021-11-03","owner_notified":"2021-12-10","manufacturer":"Mack Trucks, Inc.","component":"STEERING:HYDRAULIC POWER ASSIST:PUMP","summary":"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.","consequence":"A loss of power steering assist increases the risk of a crash.","remedy":"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 is SC0432.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.","mfr_campaign":"SC0432","part_number":"21718559","units":79,"completion":{"kind":"annual","report_number":3,"period_from":"2025-4","period_to":"2026-3","submitted":"2026-10-07","involved":79,"remedied":57,"unreachable":0,"removed":0,"remedied_percent":72,"as_of":"2026-10-19"},"do_not_drive":false,"park_outside":false,"notification":null,"french":null,"vehicles":[{"year":2021,"make":"MACK","model":"GRANITE (GR)","vehicle_id":"2021_mack_granite","match":"base","built_from":null,"built_to":null},{"year":2021,"make":"MACK","model":"LR","vehicle_id":"2021_mack_lr","match":"exact","built_from":null,"built_to":null}],"may_apply":true,"as_of":"2026-10-19","lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null},"attribution":[],"url":"https://open.wenmarpro.com/recalls/nhtsa/21V856000"}