Umm at the dealership I work for we have all the specs but it does not say about the front end I am almost sure that they would because the Silverado and Avalanche WBH have that front end so I would bet they will have the new front end
The front end is NOT changing on the Tahoe or Suburban from everything I've seen. Just some new colors, wheels, and options. Go here for the details: 2004 Tahoe site
Yeah, I am fairly certain the 'hoe will not change front ends until '05. I have heard this from many places. I do look forward to the '04 'hoe z-71s to come with the rear aux. lighting. I can't wait to mod my '02!!