{"nhtsa_id":10191069,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-01","date":"2021-04-19","document_id":"21TS-05","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Detroit Technical Service Letter for Fuel System Pretreatment Procedure Clarification. The Fuel System Pretreatment procedure is now available for GHG17, Euro V, GHG14, EPA10, and EPA07 DD Heavy Duty engine platforms. This procedure is required prior to certain engine repairs to prevent damage to the fuel injectors as a result of leaving the fuel system open for an extended period of time.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10191069-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10191069-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10191069","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FCCC","model":"FCCC","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"FREIGHTLINER","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"STERLING","model":"STERLING","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"THOMAS BUILT BUSES","model":"THOMAS BUILT BUSES","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"WESTERN STAR","model":"WESTERN STAR","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":[]}