Through some investigation i have found that there is a second antenna system inside the rear passenger door.
Passive door lock not working.
Got the service keyless system message then the next day all passive entry options were not working.
The turn signals will flash four times to indicate that passive unlocking is now disabled.
To disable the unlocking feature with the vehicle off press and hold the lock and unlock buttons on the key fob for three seconds.
It will operate with a dead battery.
With passive unlocking disabled the doors will remain locked when pressing the button on the door handle.
Eventually it stopped working altogether.
You must remove the door pad to access this.
I have change the handles but this did not fix the problem.
The doors will not unlock if they do not sense the programmed matched fob.
They work fine on the passenger side however on the driver front and rear door they do not work.
There are multiple short range antennas in your gc including one around the perimeter of the spare tire well for tailgate operation.
The lock button is part of the handle assembly and is not available separately.
The exterior passive lock unlock buttons on the doorhandles of my yukon do not work.
It may return to normal.
It was replaced under the cpo warranty.
I ve checked the settings multiple times and even turned off and on the passive door lock feature and it is on but it is not working whenever i leave my vehicle running the doors stay open any thoughts or.
The dealer replaced the outer door lock handle had to have it painted before installation.
The second is a rfid like toll roads use and operates the passive entry and push to start.
Why don t you try disabling passive entry via the uconnect settings lock unlock the car via the fob and then re enable it in uconnect and try again.