I was reading on a Buick site and there was talk of maybe having to reprogram the BCM to add it to a Buick that didn't come with it to accept it. I'm afraid if that is needed I'll be out of luck since there was never an option to have it on the GP where as with the Buick it was an option and uses the same harness, just a matter of telling the BCM that its on the car.
I don't know any of this to be sure, just the way one post read. I've read plenty of posts online that were wrong, so this could be wrong too!
