2007 GMC Savana Van Owner's Manual - Page 170

If the airbag readiness light stays on after you start the vehicle or comes on when you are driving, your airbag system may not work properly. Have your vehicle serviced right away. Airbag Off Light If your vehicle is equipped with an airbag off switch, when you turn the right front passenger's airbag off, the airbag off light will come on and stay on to remind you that the airbag has been turned off. This light will go off when you turn the airbag back on again. See Airbag Off Switch on page 86 for more on this, including important safety information. {CAUTION: If the airbag readiness light stays on after you start your vehicle, it means the airbag system may not be working properly. The airbags in your vehicle may not inflate in a crash, or they could even inflate without a crash. To help avoid injury to yourself or others, have your vehicle serviced right away if the airbag readiness light stays on after you start your vehicle. The airbag readiness light should flash for a few seconds when you turn the ignition key to RUN. If the light doesn't come on then, have it fixed so it will be ready to warn you if there is a problem. United States Canada 170