{"nhtsa_id":620546,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-08-14","date":"2001-03-12","document_id":"120301","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING","mfr_system":null,"summary":"SOME COMMERCIAL UNITS EQUIPPED WITH REAR HELLA LIGHTS MAY EXPERIENCE DISTORTION OF THE PLASTIC COMPONENTS OF THE REAR HELLA STOP, TAIL, DIRECTIONAL, AND BACKUP LIGHTS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620546","components":[{"id":"lighting","name":"Lighting","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BLUE BIRD","model":"BLUE BIRD","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":[]}