I have a 2015 F250 4X4 4 door truck, at about 105,000 miles my truck started rocking to death. I bought a Monroe SC2967 steering damper in hopes of eliminating, or at least improving, bumps at high speed. The Monroe SC2967 steering damper had no effect on the tremor. I then bought 4 new Rancho 5000X front and rear shocks and a Revain Rancho RS5413 steering stabilizer kit. Last night I installed Rancho 5000X front shocks (2) on my truck but I was running out of time and had to stop for the night. This morning I still had 3 death swings on the way to work but I would say the shaking was about 70% less with the new front shocks. I'm hoping to install a Rancho RS5413 steering stabilizer tonight and fix the problem, we'll see? Will post again after installing a new stabilizer! 10/19/2019.