{"nhtsa_id":10221050,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-09-26","date":"2014-12-05","document_id":"2100314REVA","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING; ELECTRICAL SYSTEM; POWER TRAIN; WHEELS","mfr_system":null,"summary":"Flash: 845RE Transmission Shift Enhancements, 2-1 Downshift This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. The following TCM calibration improvements are available for vehicles equipped an 845RE Automatic Transmission (Sales Code DFL). These updates are listed by vehicle and engine.LD and LX vehicles equipped with a 3.6L engine (Sales Code ERB) Software to correct a harsh bump feel during a 2-1 downshift. Software to enable the scan tool based transmission ?Quick Learn.? Software to address customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles.LX and WK vehicles equipped with a 3.0L engine (Sales Code EHD) Software to correct a harsh bump feel during a 2-1 downshift.WK vehicles equipped with a 3.6L engine (Sales Code ERB) Software to correct a harsh bump feel during a 2-1 downshift.DS vehicles equipped with 3.6L engine (Sales Code ERB)","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10221050-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10221050-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10221050","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"wheels","name":"Wheels","parent":null}],"codes":["P215C"],"topics":[],"vehicles":[{"make":"CHRYSLER","model":"300","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_chrysler_300"]},{"make":"DODGE","model":"CHARGER","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_dodge_charger"]},{"make":"DODGE","model":"DURANGO","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_dodge_durango"]},{"make":"JEEP","model":"CHEROKEE","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_jeep_cherokee"]},{"make":"RAM","model":"1500","year_from":2014,"year_to":2014,"match":"exact","vehicle_ids":["2014_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":[]}