{"nhtsa_id":617654,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-03-22","date":"2000-10-19","document_id":"191000","mfr_campaign":null,"replaces":null,"component":"STRUCTURE:FRAME AND MEMBERS","mfr_system":null,"summary":"THIS ISSUE INVOLVES THE VISIBLE NATURE OF THE FRAME RAIL INNER EDGES ON 1999 THROUGH 2001 MEDIUM-DUTY CONVENTIONAL CAB, TILT CABS, AND SCHOOL BUS VEHICLES. THESE FRAME RAILS INDICATE THAT THERE IS A TEARING EFFECT AT THE FRAME RAIL FLANGE EDGE CAUSED BY THE STRENGTH OF THE 80,000 PSI FRAME MATERIAL AND THE GAP OR DISTANCE BETWEEN THE CUTTING BLADE AND THE STATIONARY BLADE IN THE SHEERING PROCESS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/617654","components":[{"id":"structure-body","name":"Body and frame","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"CONVENTIONAL","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"CONVENTIONAL","year_from":1999,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"SCHOOL BUS SERIES","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"CONVENTIONAL","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"CONVENTIONAL","year_from":1999,"year_to":2001,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"SCHOOL BUS SERIES","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":[]}