{"nhtsa_id":11036440,"type":"service_campaign","type_name":"Service campaign","date_added":"2026-08-28","date":"2026-08-28","document_id":"N262572131","mfr_campaign":"N262572131","replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the oil galley in the cylinder head was not drilled properly. Dealers are to perform the inspection procedure contained within this bulletin.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036440-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036440-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11036440","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"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 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":[]}