GMC 2007 Envoy Denali Owner's Manual page 84

If your vehicle does not have a rear seat that
will accommodate a rear-facing child restraint,
never put a child in a rear-facing child restraint
in the right front passenger seat unless the
passenger airbag status indicator shows off and
the airbag is off. Here is why:
CAUTION:
{
A child in a rear-facing child restraint
can be seriously injured or killed if the
right front passenger's airbag inflates.
This is because the back of the
rear-facing child restraint would be
very close to the inflating airbag.
Be sure the airbag is off before using
a rear-facing child restraint in the
right front seat position.
84
CAUTION: (Continued)
CAUTION: (Continued)
Even though the passenger sensing
system is designed to turn off the
passenger's frontal airbag if the system
detects a rear-facing child restraint,
no system is fail-safe, and no one can
guarantee that an airbag will not deploy
under some unusual circumstance, even
though it is turned off. We recommend
that rear-facing child restraints be
transported in vehicles with a rear seat
that will accommodate a rear-facing child
restraint, whenever possible.
If you need to secure a forward-facing
child restraint in the right front seat,
always move the front passenger seat as
far back as it will go. It is better to secure
the child restraint in a rear seat.