I have an 02 Frontier longbed. The only thing I don't like about the vehicle is the self-lock safety feature. Flew home today. Got in my truck at the airport parking garage. Started the truck. Remembered I needed something out of my suitcase I threw in back. Got out with the engine running. Closed the door and went to the bed to open my suitcase. After about 30 seconds, I heard a "click." Yep, all four doors locked. Inside the truck were my keys, wallet and cell phone. Of course I parked it very low on gas, planning on getting some on my way home from the airport.
I learned from this that there is absolutely NO security at Tulsa International airport, once you're more than 25 feet outside the terminal.
It also does this when the engine is not running. If you unlock the truck and don't go open a door within about two minutes of unlocking it, the doors lock themselves again.
Supposed to be a safety feature I guess, but it's a PIA feature to me.
Other than that, best vehicle I've ever owned.