GMC Sierra Classic 2007 Owner's Manual page 103

CAUTION:
{
If the airbag readiness light in the
instrument panel cluster ever comes on
and stays on, it means that something may
be wrong with the airbag system. If this
ever happens, have the vehicle serviced
promptly, because an adult-size person
sitting in the right front passenger's seat
may not have the protection of the
airbag(s). See Airbag Readiness Light on
page 245 for more on this, including
important safety information.
103