Its not out of the question, why what you got??

also mj. don't be surprised when you crank one cold, if you hear a "knock". i don't know if your 02 4.8 did it or not. the 5.3's do and it's normal. should go away in about 10-15 seconds.

Thanks daddy, I forgot about that, Yes it use to do it all the time and I was scared to death about it till I learned that they all did it. I use to use Lucas oil treatment every oil change that seemed to help that a lot!