Mac,
I also drive an 2002 H1, wagon, and there are only a few changes to the 2003. There were also only slight changes from 2001 to 2002. i don't see them changing much at all...
2002 -
Higher Torque Biasing Ratio Differential
New steering wheel hub cover with defined lettering
Revised seatbelts and retractors
Reshaped console in passenger area, adding 4 inches of additional leg room for the right front passenger
New two-piece 17-inch forged aluminum wheel
Express-down driver’s side window
New LED side marker lights
H1 badging
New exterior colors: Firehouse Red (replacing Candy Apple Red) and Klondike Pearl
2003
Optional rear ELocker locking differential from Eaton
Larger radio face with cassettes and single CD slot, and 12-CD changer
New heavy-duty brush guard
New Torque Track 4 or Torque Track 4 - ELocker exterior badging
New exterior colors: Summit Silver and Black Diamond Metallic
Trav
http://www.HummerTeam.com
Travis - North Texas