{"nhtsa_id":10083260,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-21","date":"2014-04-01","document_id":"PI0843","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; PARKING BRAKE","mfr_system":null,"summary":"ON CERTAIN MACK COMPRESSED NATURAL GAS (CNG) AND LIQUID NATURAL GAS ( LNG) MODELS, BUILT BETWEEN 07/01/2013 AND 11/08/2013, THERE IS AN INCORRECT PARAMETER SETTING FOR VEHICLE SPEED SOURCE (AZI). THIS COULD CAUSE THE PARK BRAKE ALERT FUNCTION TO ONLY WORK ONCE, INTER WHEEL DIFF LOCK (IWDL) TO NOT FUNCTION COMPLETELY, SPEEDOMETER TO NOT FUNCTION PROPERLY AND ANY DATA (FUEL USED, MILES TRAVELED, AVG. MPH, ETC.) REQUESTED FROM THE VECU TO BE INCORRECT. THIS IS DUE TO A PROGRAMMING ISSUE AT THE MANUFACTURING FACILITY.","document":null,"url":"https://open.wenmarpro.com/bulletins/10083260","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"electrical","name":"Electrical system","parent":null},{"id":"parking-brake","name":"Parking brake","parent":"brakes"},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CXU","year_from":2014,"year_to":2014,"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":[]}