From the Canadian (doubt if it's different) service manual...
STANDARD PROCEDURE - TRANSMITTER PROGRAMMING
The Remote Keyless Entry Transmitter(s) can be programmed by the customer without special tools.
PROGRAMMING PROCEDURE
Transmitter programming by the customer is done by performing the following steps:
- Insert the key into the ignition switch.
- Press either the lock or unlock button momentarily twice.
- Turn the key in the ignition switch to the ON/RUN position within 30 seconds.
HTH