My truck started a violent death wobble intermittently at 75 and 80 mph.
Has happened about twice a month while "empty"
Would jerk the wheel out of your hand if you were not being attentive .
Have to pull over and stop to regain control .
Started at about 12k miles now have 20k on truck.
Going over bridges on interstates is only time it has happened .
Dealership knows about it but says Ford does not have a cure yet?
Any wisdom?

 

Is your truck stock height?

Check the usuals: track bar mounts and rod ends for wear(shouldn't be any) and stabilizer(band aid but worth checking).

If those are good, adjust for more positive camber. Ford needs to do this for you as you're under warranty.

 

Caster, not camber. Caster should be +4 degrees minimum. The 'death wobble' will wear out the parts quickly. Replacing the worn parts is only temporary if you don't also fix the caster settings.

 

Yes, sorry, caster is what I meant.

 

Does this occur below 75?