{"nhtsa_id":619203,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-05-18","date":"2001-03-28","document_id":"280301","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"THIS COMMUNICATION IS TO PROVIDE DEALER PERSONNEL WITH THE SAME INFORMATION THAT WAS PROVIDED IN A CUSTOMER NOTIFICATION LETTER TO ALL REGISTERED OWNERS OF MEDIUM DUTY C AND B SERIES VEHICLES EQUIPPED WITH AN IMPCO LIQUEFIED PETROLEUM GAS (LPG) CONVERSION KIT. SOME OF THESE VEHICLES EXHIBIT A CONDITION IN WHICH THE ENGINE MAY BACKFIRE AND FRACTURE THE PLASTIC INLET ELBOW WITHIN THE ENGINE COMPARTMENT. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/619203","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"B SERIES","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"C SERIES (MEDIUM)","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"B SERIES","year_from":2001,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"C SERIES(MEDIUM)","year_from":2001,"year_to":2001,"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":[]}