SHAKEY - 1999 Isuzu Rodeo LSE

I have a 1999 Isuzu Rodeo LSE, 110, 000 miles that shakes/vibrates, A LOT, when I go over the smallest bump on the road. I purchased new tires last winter and it ran smooth for about a month then back to shake/vibrate. Any ideas?

New tires do not solve suspension/steering system problems.

Please take this vehicle to a mechanic and have the front suspension and steering system checked out. Something is worn out and needs to be replaced.