GMC 2011 Sierra Denali, Owner'S Manual, Page: 137 / 492

Instruments and Controls 5-19
Safety Belt Reminders
Driver Safety Belt Reminder
Light
When the engine is started, a chime
sounds for several seconds to
remind a driver to fasten the safety
belt, unless the driver safety belt is
already buckled.
The safety belt light flashes for
several seconds, then comes on
solid for several more.
This chime and light sequence are
repeated if the driver remains
unbuckled and the vehicle is in
motion. If the driver safety belt is
already buckled, neither the chime
nor the light comes on.
Passenger Safety Belt
Reminder Light
For vehicles equipped with the
passenger safety belt reminder light,
several seconds after the engine is
started, a chime sounds for several
seconds to remind the front
passenger to buckle their safety
belt. The passenger safety belt light,
located on the overhead console,
comes on and stays on for several
seconds, flashes for several more
seconds and then comes on solid
for several more.
This chime and light sequence is
repeated if the passenger remains
unbuckled and the vehicle is in
motion.
If the passenger safety belt is
buckled, neither the chime nor the
light comes on.
The front passenger safety belt
warning light and chime may turn on
if an object is put on the seat such
as a briefcase, handbag, grocery
bag, laptop or other electronic
device. To turn off the warning light
and or chime, remove the object
from the seat or buckle the
safety belt.