We have Blizzacks on wife's Solara; and I have 4 Continental 4x4 WinterContacs sitting at my tire dealers shop waiting for me to take my '05 HL in to get them.
If you're dealing with lots of snow and ice, the Blizzacks should be good. Morty of TireTrends will probably come along and give you more expert advise.
Enjoy your HL. I do.