{"nhtsa_id":606747,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-09-01","date":"1999-05-01","document_id":"990603004","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"CUSTOMER MAY COMPLAIN ABOUT HORN SOUNDING, NO START DUE TO WATER INTRUSION INTO ACCESSORY WIRING JUNCTION BLOCK. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/606747","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"S SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"T SERIES","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_chevrolet_t-series"]},{"make":"GMC","model":"S SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"T SERIES","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_gmc_t-series"]},{"make":"OLDSMOBILE","model":"BRAVADA","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_oldsmobile_bravada"]}],"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":[]}