NHTSA Complaint #11580550 — 2020 JEEP WRANGLER

Driving on Interstate at 60 miles an hour, the vehicle shook back and forth so violently that I nearly lost control. I though something had broken in the suspension, and it was all all I could do to remain in my lane and get to the nearest off ramp. It subsided when I got off the freeway, where I physical inspected the wheels but couldn't find any visible issues with the suspension. It hasn't happened since (but now I stay off the freeway). I've taken the vehicle to the local Jeep dealer and was told that the issue is a known manufacture defect, which they referred to as an insane shake, and was told that I need to purchase a sway bar to correct the defect. No warning lighting appeared before or after.