I've got an 08 and found two chipped keys on ebay for $35 with shipping that I programmed myself with included instructions. The dealer wanted about $180 a copy programmed. These keys don't have the remote for the doors and panic alarm, but do get you into the cab and will start the motor.
I needed some extra keys to give shuttle drivers when we go rafting, I don't think they need the remotes.
Question I just thought of: I will have to figure out how to turn off the alarm without the remote function... ... .
eBay Store - keyless entry remote: car alarm
Anyone figure out how to turn off the alarm without the key with the buttons on it? Say I lock the doors with the keyfob/key and then loose it? If I unlock and open a door without shutting off the alarm starts sounding... I haven't tried it yet but what does it take to shut the alarm off once a person is inside? I am considering getting some 'chipped' no button keys for spares but still want to be able to continue using the remote lock/unlock feature.