2003 GMC Sierra 1500 Pickup Owner's Manual - Page 67

If the air bag ON indicator comes on when you have a rear-facing child restraint installed in the right front passenger's seat, it means that the passenger sensing system has not turned off the passenger's frontal airbag. A child in a rear-facing child restraint can be seriously injured or killed if the right front passenger's air bag inflates. This is because the back of the rear-facing child restraint would be very close to the inflating air bag. Don't use a rear-facing child restraint in the right front passenger's seat unless the air bag is off. To remove the child restraint, just unbuckle the vehicle's safety belt and let it go back all the way. The safety belt will move freely again and be ready to work for an adult or larger child passenger. If you were using a rear-facing child restraint in a regular cab pickup or extended cab pickup, and had turned the air bag off with the switch, remember to be sure to use the air bag off switch to turn on the right front passenger's air bag when you remove the rear-facing child restraint from the vehicle unless the person who will be sitting there is a member of a passenger air bag risk group. See Air Bag Off Switch on page 1-68. If the right front passenger's air bag turned is off for a person who isn't in a risk group identified by the national government, that person won't have the extra protection an of air bag. In a crash, the air bag wouldn't be able to inflate and help protect the person sitting there. Don't turn off the passenger's air bag unless the person sitting there is in a risk group. See "Air Bag Off Switch" in the Index for more on this, including important safety information. 1-60