Safety Belt Reminder Light; Airbag Readiness Light - GMC Sierra Denali 2006 Owner's Manual

Safety Belt Reminder Light

When the key is turned to RUN or START, a chime will
come on for several seconds to remind people to
fasten their safety belts, unless the driver's safety belt is
already buckled.
If the driver's belt is already buckled, neither the chime
nor the light will come on.
3-30
The safety belt light will
also come on and stay on
for several seconds, then
it will flash for
several more.

Airbag Readiness Light

There is an airbag readiness light on the instrument
panel cluster, which shows the airbag symbol.
The system checks the airbag's electrical system for
malfunctions. The light tells you if there is an electrical
problem. The system check includes the airbag
sensors, the airbag modules, the passenger sensing
system (if equipped), the wiring and the crash sensing
and diagnostic module. For more information on the
airbag system, see Airbag System on page 1-49.
If the airbag readiness light stays on after you start the
vehicle or comes on when you are driving, your airbag
system may not work properly. Have your vehicle
serviced right away.
This light will come on
when you start your
vehicle, and it will flash
for a few seconds.
This means the system
is ready.