What 9 owners told NHTSA about the 2022 Ford F550

Ford Motor Company has had a known issue with the truck frames cracking on the F-550 chassis. They acknowledged it by doing a recall, which either replaced or repaired the chassis frame or installed reinforcement braces if no cracks were visible. The recall expired in September of 2023. In October 2023 we noticed a crack on the frame just outside the recall reinforcement brace that Ford-certified technicians installed. We found another in November (reinforcement brace installed) and another in January (with Ford's new and improved frame produced due to a recall issue). Ford has denied making the repairs since the original warranty expired, even though this was the same related issue. We have been dealing with Ford Motor Company since October in hopes of resolving the issue but they continue to give us any resolution. The problem has not only caused a burden on our workforce but also caused great safety concerns. With Ford avoiding responsibility, they are allowing trucks to operate daily on our highway system, which becomes a safety concern for not only the driver but for many other motorists. The problem existed, but the issue was not resolved, all we are asking is that they take responsibility for making the repairs and permanently resolving the issue for the safety of all motorists.

NHTSA ODI 11587798

at speeds starting 40 mph the Ford 550 tends to sway and require steering changes. This is a fire truck Chassie and when weighed on certified scales it is in the required specification range. The Ford dealer says not their problem. The builder of the fire body keeps asking for more information on tires and weighing the truck.

NHTSA ODI 11565297

I was driving about 57 mph headed NW on I270 in the north Denver metro area. I went over a bridge abutment and the vehicle started shaking violently in the front end. I let off the gas but the extreme vibration/shaking continued until I slowed down to around 20 mph. I thought I had lost something in the front end. Then it happened again when I was driving between I70 and US 50 in western Colorado. I was only going 30 miles an hour and hit a rotomilled section of asphalt(a perfect edge drop to the rotomilled pavement) and the violent shaking started but ended much quicker as I slowed down to about 10 mph. First incident was 8/12/23 and second incident was 8/21/23

NHTSA ODI 11549794