{"nhtsa_id":10082931,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-19","date":"2015-01-30","document_id":"FSB 431-010","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"RANGE SYNCHRONIZER, REPAIR. THIS PROCEDURE IS TO REPAIR MDRIVE TRANSMISSIONS IN THE FIELD THAT EXHIBIT A GRINDING NOISE WHEN THE TRANSMISSION RANGE SHIFTS (FOR EXAMPLE: BETWEEN 6TH AND 7TH GEAR) BUILT BETWEEN 01/01/2013 AND 08/18/2014.","document":null,"url":"https://open.wenmarpro.com/bulletins/10082931","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CHU","year_from":2014,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"CXU","year_from":2014,"year_to":2015,"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":[]}