{"nhtsa_id":10083528,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-25","date":"2015-09-09","document_id":"FSB 284-063","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"ENGINE CONTROL MODULE (ECM). CERTAIN MACK GU VEHICLES BUILT BETWEEN DECEMBER, 2012 AND AUGUST 2015, WITH CUMMINS ISL ENGINE, SERIAL NUMBER 73881385 AND LESS, MAY EXPERIENCE INCOMPLETE DIAGNOSTIC TROUBLE CODES (DTC) INFORMATION DISPLAYED ON THE INSTRUMENT CLUSTER IF TWO OR MORE ARE ACTIVE SIMULTANEOUSLY. CUMMINS ENGINE ECM CALIBRATION TRANSFER FROM ELECTRONIC SYSTEMS DATABASE AND NETWORK (ESDN) USING INSITE IS REQUIRED TO CORRECT THIS ISSUE. REFER TO THE INSITE USER'S MANUAL.","document":null,"url":"https://open.wenmarpro.com/bulletins/10083528","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"GU","year_from":2013,"year_to":2016,"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":[]}