2006 GMC Yukon Owner's Manual - Page 198

Airbag Readiness Light There is an airbag readiness light on the instrument panel cluster, which shows the airbag symbol. The system checks the airbag's electrical system for malfunctions. The light tells you if there is an electrical problem. The system check includes the airbag sensors, the airbag modules, the passenger sensing system (if equipped), the wiring and the crash sensing and diagnostic module. For more information on the airbag system, see Airbag System on page 1-74. This light will come on when you start your vehicle, and it will flash for a few seconds. This means the system is ready. Passenger Airbag Status Indicator If your vehicle has a passenger sensing system, your rearview mirror will have a passenger airbag status indicator. Passenger Airbag Status Indicator - United States 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. Passenger Airbag Status Indicator - Canada When the ignition key is turned to RUN or START, the passenger airbag status indicator will light ON and OFF, or the symbol for on and off, for several seconds as a system check. Then, after several more seconds, 3-38