I've seen a few posts and comments recently claiming that superchips is the only programmer that works on 2004 models... that "all other programmers ONLY work on 2005+".
To set the record straight, this is false. If you have a 2004 model Titan/Armada we can tune it just fine with Uprev, and it will run awesome. The only issue is that you are limited to 3 maps instead of the 5 that the newer trucks get. Feel free to PM me any questions you may have.