Ford Expedition 2017–2020 — technical service bulletin
Bulletin 21N08 · NHTSA communication 10201668 · issued Sep 13, 2021
Technical service bulletin
communication type
Electrical System
component
2017–2020
model years
10
vehicle entries
Official summary
Certain 2017-2020 Model Year F-150, 2018-2020 Expedition, and 2018-2020 Navigator Vehicles Equipped with a 3.5L GTDI Engine PCM Reprogram Due to Engine Shudder ;In a very low percentage of the affected vehicles, an engine shudder may develop after receiving the PCM update provided in program 21B10. For peace of mind, Ford is providing a no-cost, one-time repair for customers who receive the PCM update under program 21B10 to revert the PCM calibration back to its original state before program 21B10.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.