{"nhtsa_id":10205559,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-27","date":"2021-11-19","document_id":"21NA215","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)","mfr_system":null,"summary":"This technical bulletin provides a procedure to correct a customer concern of a Pop Noise Heard on Heavy Acceleration Only.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10205559-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10205559-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10205559","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"engine-control-module","name":"Engine control module","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"ENCORE GX","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_buick_encore-gx","2022_buick_encore-gx"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_chevrolet_trailblazer","2022_chevrolet_trailblazer"]}],"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":[]}