The 97-98 only the right door, 99-up both rear doors open. The Crew Cab (Super Crew) has full size doors. The cab with the small back doors is called a Super Cab.
I had a Y2K same as the picture and both "back" doors opened, small latch on each and the short bench seat would fold up if needed, vertically challenged adults can ride in the back but I'm 6' and didn't want to ride back there very long.