Engine Brake

6.7L – Harsh 3-2 And/Or 2-1 Downshifts Coming To A Stop In Tow/Haul Mode Or When Using Engine Brake Mode – 2022 Ford F-Super Duty

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2022 Ford F-Super Duty

NHTSA ID Number: 10215617 Manufacturer Communication Number: TSB 22-2267 Summary Some 2022 F-Super Duty vehicles built on or before 16-May-2022 equipped with a 6.7L engine may exhibit harsh 3-2 and/or 2-1 downshifts when coming to a stop in tow/haul mode or when using engine brake mode. This may be due to the software in the transmission control … Read more

6.7L – Low-Speed, Downshift Operation Concern With Automatic Engine Braking Enabled – 2020-2021 Ford F-Super Duty

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2021 Ford F-Super Duty

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