{"nhtsa_id":10150543,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-12-10","date":"2015-04-18","document_id":"21-025-15","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: 854RE Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customer may experience one or more of the following. ? Malfunction Indicator Lamp (MIL) illumination with Diagnostic Trouble Code (DTC) P0734 - Gear 4 Shift Incorrect Ratio set in the TCM memory. ? Bump sensation felt during engine start/stop transition on light throttle acceleration (Engine Stop Start (ESS) equipped vehicles only). ? Less than desired overall downshifts during normal driving. ? Less than desired downshifts during passing maneuvers. ? Less than desired upshift quality in lower gears.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10150543-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10150543-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10150543","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0734"],"topics":[],"vehicles":[{"make":"RAM","model":"1500","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_ram_1500"]}],"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":[]}