Passive Door Lock Not Working

One is the battery powered section that operates the remote door lock unlock.

Passive door lock not working.

The doors will not unlock if they do not sense the programmed matched fob. With passive unlocking disabled the doors will remain locked when pressing the button on the door handle. Through some investigation i have found that there is a second antenna system inside the rear passenger door. 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 turn signals will flash four times to indicate that passive unlocking is now disabled. I have change the handles but this did not fix the problem. The other door lock buttons the remotes and the lock switch in the console all worked fine. The exterior passive lock unlock buttons on the doorhandles of my yukon do not work.

The second is a rfid like toll roads use and operates the passive entry and push to start. I went into a store left the car running and when i came back out the doors were unlocked. The dealer replaced the outer door lock handle had to have it painted before installation. Eventually it stopped working altogether.

To disable the unlocking feature with the vehicle off press and hold the lock and unlock buttons on the key fob for three seconds. You must remove the door pad to access this. There are multiple short range antennas in your gc including one around the perimeter of the spare tire well for tailgate operation. It may return to normal.

Got the service keyless system message then the next day all passive entry options were not working. They work fine on the passenger side however on the driver front and rear door they do not work. It was replaced under the cpo warranty.