{"nhtsa_id":634792,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-09","date":"2002-07-01","document_id":"020602006","mfr_campaign":null,"replaces":"0206123001","component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"CUSTOMERS MAY COMMENT OF CHECK COOLANT LEVEL MESSAGE APPEARING ON THE DRIVER INFORMATION CENTER (DIC) AND / OR REDUCED HEATING PERFORMANCE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/634792","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"DEVILLE","year_from":2001,"year_to":2002,"match":"exact","vehicle_ids":["2001_cadillac_deville","2002_cadillac_deville"]}],"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":[]}