2011 liftgate/ backup beeper not working

[Rdslesstaken]

Hey guys I have a 2011 silver with about 40k.
The rear liftgate intelligent key button does not work but opens with key fob. Also the rear backup beepers stopped working. Not sure if related. I checked the fuses behind glovebox and they are all good. All other functions work as they should(keyless, camera, etc)

Any ideas ? Anyone have this issue before ? Thanks!