Thanks for all the replies but i'm gonna see if i can find out whats wrong to limp her along. Two weeks from now I'm gonna start my sas swap tired of having to piece back this ifs front end every other month. I also have a rod starting to knock so this will need to be done anyway because i plan on going with a 5.3 as soon as she blows. Hopefully it will tuck 33s after this and not look like their too small. Another question can anyone tell me the stock axle length on my blazer?

 

check idler arm Ive seen them installed wrong and it will go where ever it wants to at higher speeds

 

im having same issue going down road it wants to jerk every which way