NHTSA ID Number: 10201631 Manufacturer Communication Number: TSB 21-2314 Summary Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L engine may exhibit a low-speed downshift operation concern with automatic engine braking enabled. This may be due to the software in the transmission control module (TCM). To correct the condition, follow the Service Procedure to reprogram the TCM ... Read more

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