{"nhtsa_id":10080304,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-09-16","date":"2016-06-23","document_id":"21-023-16","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"\"FLASH: TRANSMISSION SHIFT AND DRIVABILITY ENHANCEMENTS THIS BULLETIN INVOLVES REPROGRAMMING OF THE TRANSMISSION CONTROL MODULE (TCM) WITH THE LATEST AVAILABLE SOFTWARE. SYMPTOM/CONDITION: CUSTOMERS MAY EXPERIENCE ANY OF THE FOLLOWING SYMPTOMS: · HANGING OR DELAYED UPSHIFT WHEN BRAKING DOWNHILL OR WHEN BRAKING AFTER HIGH VEHICLE ACCELERATION RATE. · RELEASING THE ACCELERATOR PEDAL RAPIDLY CAUSES HANGING OR DELAYED UPSHIFT. **UPDATING THE TCM SOFTWARE WILL CORRECT THE CONDITIONS LISTED ABOVE AND ALSO IMPROVE SHIFT QUALITY FOR A 2-1 DOWNSHIFT (LA VEHICLE).**\"","document":null,"url":"https://open.wenmarpro.com/bulletins/10080304","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"CHRYSLER","model":"300","year_from":2016,"year_to":2016,"match":"exact","vehicle_ids":["2016_chrysler_300"]},{"make":"DODGE","model":"CHALLENGER","year_from":2016,"year_to":2016,"match":"exact","vehicle_ids":["2016_dodge_challenger"]},{"make":"DODGE","model":"CHARGER","year_from":2016,"year_to":2016,"match":"exact","vehicle_ids":["2016_dodge_charger"]}],"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":[]}