{"nhtsa_id":10233948,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-04-07","date":"2023-03-31","document_id":"D22M6REV1","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Revised Detroit Field Service Campaign for Gen 5 Customer Demo Unit (CDU) and Pre-Series Unit Retrofits. D22M6 REVISION : Page 2 of the bulletin under \"Replacement Parts\" and \"IMPORTANT\" have been revised.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10233948-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10233948-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10233948","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"DETROIT DIESEL","model":"DETROIT DIESEL","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}