{"nhtsa_id":11028819,"type":"service_campaign","type_name":"Service campaign","date_added":"2026-02-16","date":"2026-02-16","document_id":"N252536560","mfr_campaign":"N252536560","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"Certain vehicles may experience water intrusion due to a hole in the cabin Pressure Relief Valve. Dealers are to seal the hole using RTV sealant.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028819-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028819-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028819","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_gmc_sierra"]},{"make":"GMC","model":"SIERRA 2500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_gmc_sierra"]},{"make":"GMC","model":"SIERRA 3500","year_from":2026,"year_to":2026,"match":"base","vehicle_ids":["2026_gmc_sierra"]}],"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":[]}