GMC 2002 Sierra - Manual (Page 85)

2-4
Lock - Out Switch
If you have power windows on a Crew Cab
R
, the
driver’s door power window switch has a lockout
feature. This feature prevents all windows from
operating, except from the driver’s position, when the
driver’s door button labeled WINDOW LOCK is
engaged. When the button is not engaged, the rear
power windows will operate.
Swing-Out Windows (Extended Cab)
To open a rear swing - out
window, flip the latch open
and swing the glass out.
The latch will catch when the window is fully open and
it will also hold it in the open position.