Can i program a gm remote to my ford mustang along with ford remote that is already programmed?

I have a 2005 mustang I have the ford remote that came with car already programmed and working but I have a GM remote that I was wanting to try to program so we can have 2 remotes will this work or am i wasting time thanks for any help.

HEY LINDA…
Here is a video how you can program that one remote to use on All your remote access vehicles.
GOOD LUCK!