I have an 05 Armada, 2yr old twins looking for a remote starter for those extreme hot days to cool my vehicle off before putting the kids in.

Do a search here. There have been a couple of owners who have installed the remote start.

I have an 05 Armada, 2yr old twins looking for a remote starter for those extreme hot days to cool my vehicle off before putting the kids in.
You looking to put it in yourself? If so here's some wire diagram for a Titan. Should almost be the same for an Armada, you need to verified the wire to make sure.
http://www.titantalk.com/forums/titan-general-discussion/29697-remote-start-security-wiring.html

Thanks for the infor. guy's.