Lights and locks randomly going on and off

[Thedadfather]

Hello I have a 2001 Yukon XL 1500 5.6l V8. My lights and door locks randomly go on and off so if I lock my doors sometimes a few min later it will automatically unlock them, which is a huge safety issue. If I leave the truck parked for a few days it does it so much it drains the battery. I have tried to look it up on the internet but haven't got anyware, (must not be a common issue?) and don't have any clue where to start. Thanks

 

[Doubeleive]

Battery cables are good place to start