I have a 99 Yukon, bought used. I received two key fobs which both work. But I do not see a way to replace the battery inside, that's assuming there is a battery inside. There are no screws and no way to access the interior workings of this fob. I've had problems with it sometimes not locking/unlocking but that seems to be random and could be positional. Around hospitals it just doesn't work. Is there a way to change the battery? Had anyone else seen the random locking not work?
Any thoughts?
TIA