I have a 2005 zr2 blazer 4x4. When i'm driving on the highway (55 mph +) any little gust and my blazer is all over the road. The blazer has stock general tires in good condition, the blazer it self has around 25k miles on it. I recently had a front end alignment done at the chevy dealership and the problem still persists. Could it be the stabalizer shock is bad? any suggestions?

 

ZR2s should have come stock with BFG Radial Long Trails, or Goodyear RT/S's if I'm not mistaken..

but anyway, check your sway bar bushings and end links, front and rear. Do you hear and squeaking or clunking at low speeds through corners or on bumpy roads?