Chevrolet Colorado 2012 Owner's Manual page 263

To determine what kind of fluid to
use, see
use the proper fluid.
When windshield washer fluid
is needed, be sure to read the
manufacturer's instructions before
use. If operating the vehicle in an
area where the temperature may
fall below freezing, use a fluid that
has sufficient protection against
freezing.
. Always
Open the cap with the washer
symbol on it. Add washer fluid
until the tank is full. See
for reservoir location.