How to program 4 button remote

It depends entirely on the model of car..

OK, here it is:

You have to program all the transmitters you want to use as part of this process, as it will erase all memory of existing transmitters.

-Remove ignition key

-Take out BCM PRGRM fuse from the fuse panel

-Close all doors and liftgate

-Turn ignition key to Accessory

-Turn key to Off, and back to Accessory within 1 second

-Open and close any door - chime will sound

-For each transmitter in turn, press and hold both LOCK and UNLOCK for 14 seconds (chime may be heard at 7 seconds, keep holding)

-Remove key

-Reinstall BCM PRGRM fuse

Looks like your headed to the dealer.