{"nhtsa_id":10187939,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-03","date":"2021-02-09","document_id":"SSM 49558","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Some 2021 F-Super Duty vehicles, with 5,000 miles (8,000 km) or less may exhibit harsh or delayed engagement/shift concerns with or without transmission diagnostic trouble codes(DTC) in the powertrain control module (PCM) or the transmission control module (TCM). Most concerns at low mileage may be addressed with the accelerated main control break-in routine. Refer to Workshop Manual, Section 307-01 Diagnosis and Testing, DTC Chart and/or Diagnosis By Symptom to identify the clutch(s) to be cycled. This routine cycles the shift solenoids and clutch control valves to remove contamination that may be sticking the valves and must be performed along with an adaptive learning drive cycle before attempting internal service. For claiming, use causal part 7A100 and applicable labor operations in Section 7 of the Service Labor Time Standards Manual.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187939-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187939-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10187939","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-250 SD","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_ford_f-250"]},{"make":"FORD","model":"F-350 SD","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_ford_f-350"]},{"make":"FORD","model":"F-450 SD","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_ford_f-450"]},{"make":"FORD","model":"F-550 SD","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_ford_f-550"]}],"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":[]}