{"nhtsa_id":11030532,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-04-02","date":"2026-03-21","document_id":"N25-250552","mfr_campaign":"N25-250552","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"TCP: TCP (Telematics Connectivity Platform)","summary":"Improvements to OnStar functionality.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030532-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030532-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11030532","components":[],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"ENCLAVE","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_buick_enclave","2022_buick_enclave","2023_buick_enclave"]},{"make":"BUICK","model":"ENCORE","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_buick_encore","2022_buick_encore"]},{"make":"BUICK","model":"ENCORE","year_from":2023,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"CADILLAC","model":"XT4","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_cadillac_xt4","2022_cadillac_xt4","2023_cadillac_xt4"]},{"make":"CADILLAC","model":"XT5","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_cadillac_xt5","2022_cadillac_xt5","2023_cadillac_xt5"]},{"make":"CADILLAC","model":"XT6","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_cadillac_xt6","2022_cadillac_xt6","2023_cadillac_xt6"]},{"make":"CHEVROLET","model":"BLAZER","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_blazer","2022_chevrolet_blazer","2023_chevrolet_blazer"]},{"make":"CHEVROLET","model":"BOLT EUV","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_chevrolet_bolt-euv","2023_chevrolet_bolt-euv"]},{"make":"CHEVROLET","model":"BOLT EV","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_bolt-ev","2022_chevrolet_bolt-ev","2023_chevrolet_bolt-ev"]},{"make":"CHEVROLET","model":"CAMARO","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_camaro","2022_chevrolet_camaro","2023_chevrolet_camaro"]},{"make":"CHEVROLET","model":"EQUINOX","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_equinox","2022_chevrolet_equinox","2023_chevrolet_equinox"]},{"make":"CHEVROLET","model":"MALIBU","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_malibu","2022_chevrolet_malibu","2023_chevrolet_malibu"]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2021,"year_to":2023,"match":"base","vehicle_ids":["2021_chevrolet_silverado","2022_chevrolet_silverado","2023_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2021,"year_to":2023,"match":"base","vehicle_ids":["2021_chevrolet_silverado","2022_chevrolet_silverado","2023_chevrolet_silverado"]},{"make":"CHEVROLET","model":"TRAILBLAZER","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_chevrolet_trailblazer","2022_chevrolet_trailblazer","2023_chevrolet_trailblazer"]},{"make":"GMC","model":"ACADIA","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_gmc_acadia","2022_gmc_acadia","2023_gmc_acadia"]},{"make":"GMC","model":"SIERRA 1500","year_from":2021,"year_to":2023,"match":"base","vehicle_ids":["2021_gmc_sierra","2022_gmc_sierra","2023_gmc_sierra"]},{"make":"GMC","model":"SIERRA 2500","year_from":2021,"year_to":2023,"match":"base","vehicle_ids":["2021_gmc_sierra","2022_gmc_sierra","2023_gmc_sierra"]},{"make":"GMC","model":"TERRAIN","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_gmc_terrain","2022_gmc_terrain","2023_gmc_terrain"]}],"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":[]}