4WD – 6R100 – Metallic Grinding Noise Under Light Acceleration Between 23-33 MPH (37-53 Km/H) – 2021-2022 Ford F-250
NHTSA ID Number: 10212103 Manufacturer Communication Number: TSB 22-2199 Summary Some 2021-2022 F-250 vehicles equipped with a 6R100 transmission, four-wheel drive (4WD), and built on 01-Feb-2021 and through 16-May-2022 may exhibit a metallic grinding noise from the rear of the vehicle under light acceleration between 23-33 mph (37-53 km/h). The noise is most prevalent in 3rd and … Read more