{"nhtsa_id":11015540,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-03-11","date":"2025-03-04","document_id":"21-017-25","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":"Transmission Control Module","summary":"\"Flash: Transmission Control(TCM) Module Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0300 - Multiple Cylinder Misfire. NOTE: DTC P0300 will be set in the Powertrain Control Module (PCM). No DTCs will be stored in the TCM. Customers may also experience the following: ● Rough running engine. This bulletin involves reprogramming the TCM with the latest available software\"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11015540-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11015540-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11015540","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0300"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND WAGONEER","year_from":2022,"year_to":2022,"match":"exact","vehicle_ids":["2022_jeep_grand-wagoneer"]},{"make":"JEEP","model":"WAGONEER","year_from":2022,"year_to":2022,"match":"exact","vehicle_ids":["2022_jeep_wagoneer"]}],"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":[]}