Door locks not working

[Texas99Tahoe]

When I click the lock/unlock button on the door the doors do not unlucky from either door but in the rear cargo Bay switch occasionally works but then stops again so since the door locks have the ability to lock/unlock when I hit the button in the back what would make it not work from the front doors I have only checked the harness on the switch but that's it thank you for any suggestions

 

[lesterl]

So the switches in the doors don't work at all? The switch in the rear hatch switch will pop the hatch?