{"nhtsa_id":10204438,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-13","date":"2021-11-02","document_id":"PIT5863","mfr_campaign":null,"replaces":null,"component":"ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"This Preliminary information communicates that a vehicle may be encountered with a buzz or rattle type noise emanating from the exhaust. The dealer technician is directed to replace the exhaust system.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204438-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204438-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10204438","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"XT5","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_cadillac_xt5"]},{"make":"CADILLAC","model":"XT6","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_cadillac_xt6"]},{"make":"CHEVROLET","model":"BLAZER","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_chevrolet_blazer"]},{"make":"GMC","model":"ACADIA","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_gmc_acadia"]}],"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":[]}