{"nhtsa_id":634531,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-03","date":"2002-04-01","document_id":"020846004","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)","mfr_system":null,"summary":"SUBJECT REGARDING CELLULAR ERROR MESSAGES RECEIVED WHEN TRYING TO CONNECT TO ONSTAR FOR 2000 - 2002 PASSENGER CARS AND LIGHT DUTY TRUCKS WITH FACTORY-INSTALLED ON -STAR. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/634531","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"BUICK","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CADILLAC","model":"CADILLAC","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"CHEVROLET","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"GMC","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"OLDSMOBILE","model":"OLDSMOBILE","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"PONTIAC","model":"PONTIAC","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":[]}