2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 127

{ WARNING: If the airbag readiness light ever comes on and stays on, it means that something may be wrong with the airbag system. For example, the right front passenger airbag could inflate even though the airbag on-off switch is turned off. To help avoid injury to yourself or others, have the vehicle serviced right away. See Airbag Readiness Light on page 4‑33 for more information, including important safety information. United States Canada To turn the right front passenger airbag on again, insert the ignition key into the switch, push in, and move the switch to the on position. The right front passenger frontal airbag is now enabled (may inflate). See Airbag Off Light on page 4‑34 for more information. 2-85