[Wisha Haddan H3]

Sweet. With all the features, it probably has firmware specific to each vehicle line. If they make one for the H3, I'll have to get it.

"The fob will operate at four to six times the range of competitors' keyless entry systems, GM says."

That part's true about the current fobs. The keyless on my ex's 4runner and land cruiser had pitiful range (even with new batteries). But if I forget to lock the H3, I can still do it from halfway down the parking lot.