{"nhtsa_id":10144828,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-09-24","date":"2015-03-04","document_id":"21-014-15","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER","mfr_system":null,"summary":"Flash: 8HP70 Transmission Shift Quality And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software A small number of customers may experience one or more of the following conditions. ? Bump sensation during tip-in acceleration between 5-10 mph (8-16 kph). ? Less than desired transmission performance during Torque Converter Clutch (TCC) lockup. ? Less than desired transmission performance in Tow/Haul mode. ? Less than desired transmission performance during coast down deceleration at higher altitudes. ? Bump sensation during 6-5 downshift. ? Bump sensation during 1-2 upshift.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10144828-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10144828-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10144828","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"torque-converter","name":"Torque converter","parent":"powertrain"}],"codes":[],"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":[]}