GMC 2010 Savana 1500 Cargo Owner's Manual page 98

The passenger sensing system is designed to turn on
(may inflate) the right front passenger frontal airbag
anytime the system senses that a person of adult size is
sitting properly in the right front passenger seat.
When the passenger sensing system has allowed the
airbag to be enabled, the on indicator will light and stay
lit to remind you that the airbag is active.
For some children, including those in child restraints, and
for very small adults, the passenger sensing system may
or may not turn off the right front passenger frontal airbag,
depending upon the person's seating posture and body
build. Everyone in your vehicle who has outgrown child
restraints should wear a safety belt properly — whether
or not there is an airbag for that person.
2-74
WARNING:
{
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 4-23 for more on this, including
important safety information.