There are several commercial/public safety type radios that will do VHF and UHF, but none of them are cheap. Harris, EF Johnson, etc.
Unless you have a pretty big budget, most of them are probably going to be well out of reach of the hobby user.
I think what has people confused is that you posted this in the Amateur Radio forum. There are plenty of amateur grade dual band radios, but not ones that will have part 95 certifications for GMRS use. Of the big commercial brands, not sure if any of them have it, either.
Giving us an idea of what your budget is would help get you some appropriate suggestions.