{"nhtsa_id":615087,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-12-27","date":"1998-07-01","document_id":"876506A","mfr_campaign":null,"replaces":"876506","component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"SOME VEHICLES MAY EXHBIT A MALFUNCTION INDICATOR LAMP ILLUMINATION AND POSSIBLY A NO-START CONDITION WITH A P1621 AND / OR A P1336 DIAGNOSTIC TROUBLE CODE SET, AND VARIOUS DIAGNOSTIC TROUBLE CODES RELATED TO THE THEFT DETERRENT SYSTEM. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/615087","components":[],"codes":["P1336","P1621"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"S SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"S SERIES","year_from":1998,"year_to":1998,"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":[]}