{"nhtsa_id":621540,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-09-25","date":"2001-06-18","document_id":"01C1","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SUBJECT REGARDING A RECALL TO RESET THE VARIABLE NOZZLE TURINE (VNT) MECHANISM ON 2000 AND 2001 MODEL YEAR SERIES 50 EGR ENGINES TO ELIMINATE POOR ACCELERATION AND CUSTOMER COMPLAINTS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/621540","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"DETROIT DIESEL","model":"DETROIT","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":[]}