{"nhtsa_id":10000766,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-03-31","date":"2002-12-01","document_id":"020842006","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"RELAY OMITTED FOR BODYBUILDER CONNECTION / UPFITTER PROVISION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10000766","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"W3500","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"W4500","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"W3500","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"W4500","year_from":2003,"year_to":2003,"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":[]}