GMC 2006 Sierra - Manual (Page 217)

{ CAUTION:
If the right front passenger’s airbag is turned
off for a person who is not in a risk group
identified by the national government, that
person will not have the extra protection of an
airbag. In a crash, the airbag will not be able
to inflate and help protect the person sitting
there. Do not turn off the passenger’s airbag
unless the person sitting there is in a risk
group. See Airbag Off Switch on page 1-78
for more on this, including important safety
information.
If, after several seconds, all status indicator lights remain
on, or if there are no lights at all, there may be a problem
with the lights or the passenger sensing system. See your
dealer for service.
{ CAUTION:
If the airbag off indicator and the airbag
readiness light ever come on together, 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 seat
may not have the protection of the airbag. See
Airbag Readiness Light on page 3-35.
3-39