1998 GMC Sonoma Owner's Manual - Page 58

7. Push and pull the child restraint in different directions to besure it issecure. I Ii . . 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, turn on the right front passenger's air bag when you remove the rear-facing child restraint from the vehicle. To turn the air bag on again, insert your ignition key into the switch, push in, and move the switch to the ON position. 1-44