{"nhtsa_id":10121783,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-11-03","date":"2017-09-07","document_id":"21-009-17 REV. E","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN","mfr_system":null,"summary":"Flash: Transmission Diagnostic and Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) withthe latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technicianmay find the following Diagnostic Trouble Codes (DTC) set in the PCM memory:U0401-00 - Implausible Data Received From ECM/PCM (Sales Code ERC only). In addition some customers may experience one or more of the following condition:Poor shift quality on coast-down shifts (bumps) (Sales Code EZH only). During an engine limp mode condition, the transmission remains in a fixedgear. The following software enhancements are also available:Start Stop quality enhancement (WK with Sales Code ERC only). Transmission shift quality enhancement.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10121783-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10121783-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10121783","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["U0401"],"topics":[],"vehicles":[{"make":"DODGE","model":"DURANGO","year_from":2017,"year_to":2017,"match":"exact","vehicle_ids":["2017_dodge_durango"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2017,"year_to":2017,"match":"exact","vehicle_ids":["2017_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":[]}