Some 2020 F-350, F-450, and F-550 F-Super Duty chassis cab vehicles equipped with a 6.7L diesel engine and...

Bulletin number

SSM 48820

Component

Engine and engine cooling

Summary

Some 2020 F-350, F-450, and F-550 F-Super Duty chassis cab vehicles equipped with a 6.7L diesel engine and 10R140 automatic transmission may exhibit a delay/bump feel when pulling away from a stop. This may be due to the neutral idle feature that automatically reduces the load on the engine when the vehicle stops, and the gear selector is in DRIVE to reduce fuel consumption and emissions. The transmission automatically resumes operation when the brake is released. The neutral idle feature activates when the transmission is sufficiently warmed, and the vehicle is on level grade. Do not attempt any repairs for this condition. Refer to Owners Manual Transmission Section for more information.

Owners of these vehicles have filed 46 complaints in the engine category.