Green light blinking next to AC Vent on driver side

[bigduly]

I have a 2006 GMC Sierra, and I would like to know what that light is for. This green light is annoying me. The blinking light is located below the vent on the driver side. Can anyone tell me what it's for?

 

[Wartsnuff]

take a picture of it maybe ?

cheers
Warts

 

[GMC Customer Service]

Have you had any luck with the light situation? If not, I would recommend sending a picture and so we can help diagnose the situation.

Feel free to keep us posted! Thank you.

Joey, GM Customer Service