1998 Chevrolet Silverado Z71 4 x 4 from North America - Comments

I have a 1998 Silverado/5.7. Bought it two years ago, very well taken car of, no winter driving etc. At the present time I have approximately 90,000 miles on it. I have the same steering jerkiness that some of you have described. I had a coolant leak and found out it was the front quick connect. Replaced that and found that I still have a leak but cannot find exactly where it is. I have a suspicion it is the intake manifold. Aside from that I really like the truck and continue to pamper it as the previous owner had done. I'm looking to put in a dual spark system, have any of you done this.