Second Row window slit?

[VictorLin0725]

Took delievery of my new GMC Yukok XL earlier today and had an odd question about the second row windows. Anyone know why the "whole" glass doesn't go down? There's that 3 inch vertial piece at the back that is fixed in place. Only reason I ask is because my buddy's Silverado doesn't have that piece and since they are built similarly why would the Yukon have that obtrusive piece there that takes away from the clean side profile? Love some insight on this, is it merely structural?

 

Cheers,

Victor

[cs15dah]

Next time you have the back door open, look at the door latch. 

[VictorLin0725]

14 hours ago, cs15dah said:

Next time you have the back door open, look at the door latch. 

Don't they have the same door as the silverado?

[cs15dah]

I really have no idea. It was just a thought. Maybe a wrong one... ;)