This has to be the crazeist thing on earth now I've replaced my shocks and idel controlarm in Feb and just new tires, balanced and rotated in Nov.. though everytime I hit a small bump or go over something the whole car vibrate like I'm driving on a mountain.
What istheproblem?

 

How are the lower ball joints and pitman arm?
Is there a place you can take it for a free front end check?

 

lower ball joints will be replaced next wed. I know for a fact they're bad, but do you think all that vibrationbecause of the ball joints?
I'll have them check the pitman arm too

 

My guess is that once the ball joints are replaced, and you get an alignment that you should be better. However if you got larger bore shocks than the stock ones (like Edelbrock IAS 46mm piston shocks) and or got some light truck (LT235/75R15 for example instead of P235/75R15) tires then the blazer will be a lot stiffer than before. Mine isn't bad but I did go with both the examples mentioned above and have a much more truck like ride. I believe it has to do with the short wheel base and a lot stiffer components. Just my thoughts, maybe this is your problem too.