{"nhtsa_id":11020637,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-07-09","date":"2025-07-04","document_id":"21-029-25 REV. A","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"8HP75 D Clutch Repair Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must have at least 11,265 km (7,000 mi.) and exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0733-00 - Gear 3 Shift Incorrect Ratio. ● P1DA8-00 - Incorrect Gear Ratio Clutch A B or D Defective. ● P1D92-00 - Incorrect Gear Ratio - Clutch 4 Defective. Customers may also comment on the following: ● Vehicle enter limp home mode. This bulletin involves replacing the D clutch.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020637-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020637-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11020637","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0733","P1D92","P1DA8"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND WAGONEER","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_jeep_grand-wagoneer","2023_jeep_grand-wagoneer"]},{"make":"JEEP","model":"WAGONEER","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_jeep_wagoneer","2023_jeep_wagoneer"]},{"make":"RAM","model":"1500","year_from":2020,"year_to":2023,"match":"exact","vehicle_ids":["2020_ram_1500","2021_ram_1500","2022_ram_1500","2023_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":[]}