{"nhtsa_id":10083102,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-20","date":"2014-11-13","document_id":"FSB 386-007","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"VEHICLE SPEED SENSOR. ON CERTAIN MACK TRUCKS BUILT FROM 5/7/2012 TO 11/07/2014 WITH THE M-DRIVE TRANSMISSION, THE VEHICLE SPEED SENSOR (VSS) MAY FAIL INTERNALLY. THIS IS DUE TO A MANUFACTURING DEFECT OF THE SENSOR. THIS FAILURE MAY CAUSE FAULT CODES RELATED TO ROAD SPEED. THIS FAILURE CAN CAUSE MULTIPLE SPN 84 FMI 19 FAULTS, BOTH ACTIVE AND INACTIVE, TO OCCUR AND MAY CAUSE THE MIL LIGHT TO COME ON IN THE DASH.","document":null,"url":"https://open.wenmarpro.com/bulletins/10083102","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":2013,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"CXU","year_from":2013,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GU","year_from":2013,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"TD","year_from":2013,"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":[]}