{"nhtsa_id":10204444,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-13","date":"2021-11-08","document_id":"PIP5826","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"This Preliminary information communicates to the dealers information related to isolating a potential engine wiring harness issue causing a MIL on with P0521.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204444-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204444-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10204444","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":["P0521"],"topics":[],"vehicles":[{"make":"BUICK","model":"ENCORE GX","year_from":2020,"year_to":2021,"match":"exact","vehicle_ids":["2020_buick_encore-gx","2021_buick_encore-gx"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_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":[]}