Mirror Puddle Lights

[Sierra16Denali]

Hello all,

 

I acquired a new to me 2020 GMC Sierra Denali Ultimate. 
l’ve tried everything to get the puddle lights under the mirrors to come on with no avail. 
All the other features of the mirrors work, camera, folding, unfolding, auto dim, electric adjust, led tasks lights on the back. 
 

I have gone through the infotainment menus for lighting, turned on locator lights. Nothing. 
The light sensor works as it automatically turns on the headlights in low light scenarios. 
I have parked it in a dark garage, put towels over the light sensors.  Nothing. 
 

I have locked and unlocked the vehicle with the remote fobs and manually with the door handle buttons. 
 

I am out of ideas.  Was there a software update or glitch for the puddle lights on these trucks?

 

Thanks for your thoughts!

[Sneaky pete]

Have you tried the switch on the left side of the dash. On mine you can turn the left,right or both on. Only works in park.

[Sierra16Denali]

Have it fixed.  
Ended up being a burnt out led on the driver side and a corroded connection in the passenger side.  Replaced with parts from Amazon.   Works as it should now.  

[gemarsh]

48 minutes ago, Sneaky pete said:

Have you tried the switch on the left side of the dash. On mine you can turn the left,right or both on. Only works in park.

That switch is for the work lights in the mirrors. OP is asking about the small light on the bottom of mirror that comes on when a person locks/unlocks the truck and shines on the ground...