{"nhtsa_id":10229770,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-01-17","date":"2022-12-22","document_id":"S2203000004 Rev.","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Service 4wd Light/Message Illuminated. Diagnostic Trouble Codes (DTCs) C149D-54 ? Clutch Calibration Not Learned ? Missing Calibrations, And/Or C149D-55 ? Clutch Calibration Not Learned ? Not Configured, Set After Drivetrain Control Module (DTCM) Reprogramming.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10229770-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10229770-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10229770","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["C149D"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2023,"year_to":2023,"match":"exact","vehicle_ids":["2023_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE 4XE","year_from":2022,"year_to":2022,"match":"base","vehicle_ids":["2022_jeep_grand-cherokee"]}],"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":[]}