{"nhtsa_id":10054117,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-12-21","date":"2013-08-01","document_id":"SD-13-21021","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, AIR:ANTILOCK; TRACTION CONTROL SYSTEM","mfr_system":null,"summary":"BENDIX: ON SOME SEMI TRACTORS, THE AUTOMATED AIR PRESSURE TRANSFER SYSTEM PROVIDE AN IMPROVED TRACTION AT LOW SPEEDS, WITH ADVANCED ANTILOCK BRAKE SYSTEMS (ABS), (PULLING AWAY ON INCLINED RAMPS, OR SLIPPERY CONDITIONS (MUD OR SNOW COVERED SURFACES). MODEL ETRAC AUTOMATED AIR PRESSURE TRANSFER SYSTEM. NO YEARS LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10054117","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"driver-assistance","name":"Driver assistance","parent":null},{"id":"abs","name":"Anti-lock brakes","parent":"brakes"}],"codes":[],"topics":[],"vehicles":[{"make":"BENDIX","model":"EC-30 ANTILOCK ECU","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"BENDIX","model":"SERVICE BRAKES AIR","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":[]}