{"nhtsa_id":10011211,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-01-11","date":"2004-08-01","document_id":"040604055","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"DIAGNOSTIC TROUBLE CODE P0446 (RESTRICTED/BLOCKED EVAP VENT PATH) SET, SERVICE ENGINE SOON (SES) LAMP ILLUMINATED. 2000 - 2003 CADILLAC, CHEVROLET AND GMC FULL-SIZE UTILITY MODELS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10011211","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0446"],"topics":[],"vehicles":[{"make":"UNKNOWN","model":"UNKNOWN","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":[]}