{"nhtsa_id":10251615,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-03-14","date":"2024-03-14","document_id":"A222379711","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL","mfr_system":null,"summary":"Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles. The Engine Control Module (ECM) may not clear the permanent status of DTC P0521 (Engine Oil Pressure Sensor Performance). If the ECM had previously set a DTC P0521 and the permanent status is not properly cleared, the vehicle may not pass certain Emissions Inspection/Maintenance (I/M) tests. Dealers are to reprogram the ECM.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10251615-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10251615-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10251615","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":["P0521"],"topics":[],"vehicles":[{"make":"BUICK","model":"ENCORE GX","year_from":2020,"year_to":2023,"match":"exact","vehicle_ids":["2020_buick_encore-gx","2021_buick_encore-gx","2022_buick_encore-gx","2023_buick_encore-gx"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_trailblazer","2022_chevrolet_trailblazer","2023_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":[]}