if this is a 2000 silverado and you have steering problems explain what type of front end steering you have... I have found the idler arms in this model very solid when compared to the pre 99 model year....the weak componet in this set up is the tie rods just a small amount of wear will cause poor tracking esp. on the hywy... idler arms can move 1/8in or less with 25lbs of force applied....so inspect componets and report what type of steering system you have as i believe gm also had a steering rack type of system...