{"nhtsa_id":10181686,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-10-26","date":"2020-09-29","document_id":"20NA028","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This bulletin is to inform dealers that in extreme cold weather, a grille winter cover needs be added during PDI to avoid the customer returning with concerns related to charge air cooler icing.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10181686-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10181686-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10181686","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"ENCORE GX","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_buick_encore-gx"]},{"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":[]}