Just got a call from a friend and he has a 2004 chevy blazer and says he can't seem to get it out of 4wheel drive he says he has a button on the dash...i dont know he is about 6 hours away and this is the first time he used it in the winter and says it wont come out of 4 wheel drive... He is trying to do it in park i dont know what to tell him i never even say that blazer he has..any tips?