{"nhtsa_id":10139842,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-06-11","date":"2014-11-18","document_id":"18-063-14","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN","mfr_system":null,"summary":"Flash: 5.7L Powertrain Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. The following powertrain system improvements/enhancements are included in this software release. These symptoms are broken down by vehicle. 2015 WK * Enhancements to improve a slight lag or hesitation during Multi Displacement System (MDS) mode transitions. * Enhancements to improve a slight drop in engine RPM when the vehicle is shifted to reverse or drive within 3 seconds of a cold start. * Malfunction Indicator Lamp (MIL) illuminated with Diagnostic Trouble Code (DTC) U0140-00 - Lost Communication with Body Control Module (BCM). 2014 WD * Enhancements to improve a slight drop in engine RPM when the vehicle is shifted to reverse or drive within 3 seconds of a cold start.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10139842-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10139842-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10139842","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":["U0140"],"topics":[],"vehicles":[{"make":"DODGE","model":"DURANGO","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_dodge_durango"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_jeep_grand-cherokee"]}],"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":[]}