GMC 2011 Sierra - Manual (Page 148)

Black plate (2,1) GMC Sierra Owner Manual - 2011
4-2 Storage
Center Console Storage
Vehicles with an upper and lower
center console storage area have
cupholders included.
Pull the lever (A) up to access the
upper storage area. Raise the upper
storage bin, then pull the lever (B)
up to access the lower storage area.
Use the key to lock and unlock the
lower storage area.