I don't believe the 2ID was mechanized like the 3ID and 4ID. I believe the brigade going to Iraq have been issued the Stryker armored vehicles, wheeled not tracked, like the Bradley or older APCs.
ping
According to the info at the URL below they have Abrams, Bradleys and Apaches and a whole lot of other stuff.
http://www.globalsecurity.org/military/agency/army/2id.htm