My Expy handles the snow great as long as you pay attention to the truck. The big thing I found with the truck is if you have the LS rear end, if you feel the truck shudder a little bit, you are loosing traction on 1 tire in the rear and you need to ease off the gas just a little bit. If you stay on the gas or give it more, if you happen to break both rear wheels loose, the rear end WILL!!!!!!! come around in a heartbeat. Makes for some interesting times.
Be kind with the gas, point the wheels where you want the truck to go and it will amaze you where it will end up. If you need to play, find a parking lot and spin that puppy around. My wife always cussed up a storm when I played as she swore I was laying the truck on its side because all she should see is the snow on the ground as the truck went around and around. LMAO.