{"nhtsa_id":10198873,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-07-06","date":"2021-05-10","document_id":"21NA090","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This service bulletin provides a repair procedure to correct a customer concern of Whistle or Hoot/Woot Noise Heard from Under Vehicle in Cold Ambient Temperatures.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198873-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198873-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10198873","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"XT4","year_from":2019,"year_to":2021,"match":"exact","vehicle_ids":["2019_cadillac_xt4","2020_cadillac_xt4","2021_cadillac_xt4"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}