I was cruising at about 65mph the other day when my 91 gs (ls motor) suddenly died. First thing I did is pull the valve cover and saw that 2 of my lifter/rockers just fell out of position. I have never heard of this happening. Has this happened to anyone here. I can't understand how 1, let alone 2 could fall off. Lemme know if you all have heard of this and what might have caused this. I am going to try and put this back together tonight and hope it works.