OEM 2000 lock/unlock keyless untry button clicker thing

I have one from my sold 2003 Grand Cherokee can the code be changed to make it work for my 2000? Is there a place that does this sort of thing?

Also I have a keyless entry for my 2000 XJ BUT its not the factory one its an alarm that was on the vehicle before I bought it (brand: Karr). The clicker is now a piece of crap. I have to push the button down with another key to get it to work. I have already tried changin the battery and its still crap. Does anyone know anywhere I can go to get a new keyless entry clicker? It only came w/ one.

fdsa487 said:

Does anyone know anywhere I can go to get a new keyless entry clicker? It only came w/ one.

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uummm, the dealer.

JEEPZZ said:

uummm, the dealer.

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Its all good. I switched the innards from the grand cherokee one to the cherokee one and it works perfectly now. Thanks.