So I was thinking that the ride on my 94 was pretty stiff and wondering how one would know that the shocks needed replacing as I went over some railroad tracks and heard them squeak as the car went up and down. Looked and found out it has yellow bilstein sp? shocks on it already. What brand was stock on this year vette and how do you know when the shocks need to be replaced. I am currently just doing preventative maintenance, wires, o2 sensor type things and was curious thanks!