yeah, i bought both of my keyless from eBay and had them both programmed within 5 minutes. It's very easy...

These are the instructions that I followed and it worked flawlessly for me.

Insert keys in ignition and leave in the OFF position.




Make sure there are metal contact pins in terminals 1 and 4 and connect the Data Port terminals 1 and 4 with a suitable jumper wire, leave the jumper wire connected throughout the programming procedure. Make sure you know which terminals are 1 and 4.




Within 10 seconds after connecting the jumper wire, press the Hazard Switch 6 times. Note: The doors will automatically lock and unlock once at this time indicating that the system is in the programming mode.




Press the LOCK button on the remote to be registered three times within 10 seconds. Upon successful programming, the door will lock and unlock once.




Repeat step 5 with up to 4 remotes (including any existing remotes) within one minute. After completing each programming, the doors will lock and unlock once.




Disconnect the programming wire and remove the keys from the ignition..