Take a look at this thread. Pretty sure this will help you out.
http://www.tahoeyukonforum.com/forum/showthread.php?t=66744
Thanks man. That definitely does help me make my decision. Like others have said, removing the valance gives the truck more of a lifted look. That's definitely not the look that I'm going for on this truck. Very glad that I saw those pictures. Thanks @Pockets for showing me that. Still I am kinda liking when people basically just trim off the part on the lower part of the valance where it dips down extra low. But I am definitely going to proceed with caution if I ever do think about doing that. Thanks for the guidance guys!