I have a 99 1500 Suburban, I was going around a curve yesterday and the resistance in the steering suddenly went away and it was very easy to turn (if that makes sense). It would be very easy to oversteer and go into the opposite lane. It did this once about 6 months ago but I thought it was just me. I was steering left to go around the curve at about 45 mph. This makes me very nervous to drive it until I get this fixed.