Windows; Manual Windows - GMC Sierra Denali 2009 Owner's Manual

Windows

CAUTION:
{
Leaving children, helpless adults, or pets in a
vehicle with the windows closed is dangerous.
They can be overcome by the extreme heat and
suffer permanent injuries or even death from heat
stroke. Never leave a child, a helpless adult, or a
pet alone in a vehicle, especially with the windows
closed in warm or hot weather.
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Manual Windows

Turn the hand crank on each door to manually raise or
lower the manual windows.