Unfortunately there is a computer chip inside the Fob and even more unfortunately for your wallet this is something the dealership (stealership) needs to reprogram for you. It will be quick...but not painless. Yes, there will be an exchange of $$ involved.
go to corvetteforum.com and they have the answer
How do you program a key fob to a 2003 Chevy Malibu
To program any kind of key fob you have to take it to a dealership.
How do I re program my key fob for renault laguna estate 1997?
Dealer only on 96+ newer Jeep Grand Cherokee's
Dealer only on 96+ newer Jeep Grand Cherokee's
To add a new key fob, take the vehicle and the key fob to an authorized dealer. To re-program a key fob after replacing it's battery, open the key fob, then read and follow the instructions inside.
http://www.ehow.com/how_7456283_program-key-fob-harley-davidson.html
The key fob programing requires the dealer's scan tool.
It is possible to program one key fob to use on two different cars. If the key fob uses a primitive fixed code system, programming two cars will not work.
How do you program the remote key fob on a 2005 Chevy Malibu maxx
Ford Outcode/Incode Calculator +SW Dongle support older Jar but not newer