{"nhtsa_id":10148905,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-11-26","date":"2015-05-07","document_id":"21-005-15 REVA","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN","mfr_system":null,"summary":"Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) and Transmission Control Module (TCM) with new software. NOTE: Both the PCM and TCM must be up to date for these changes to be effective.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10148905-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10148905-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10148905","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_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":[]}