{"nhtsa_id":10156922,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-04-08","date":"2019-03-12","document_id":"PIC6354","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This Preliminary information communicates that during an autostop event the customer may notice a pump noise. The ECM turns on the auxiliary coolant pump to meet the heater performance so the noise they hear is normal and no repairs are needed and that as more information is gathered this may be converted into a bulletin.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10156922-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10156922-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10156922","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"REGAL","year_from":2018,"year_to":2018,"match":"exact","vehicle_ids":["2018_buick_regal"]}],"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":[]}