1999 GMC Sonoma Owner's Manual - Page 50

yellowblue Securing a Child Restraint in the Right Front Seat Position Your vehicle has a right front passenger air bag. There's a switch on the instrument panel that you can use to turn off the right front passenger's air bag when you want to secure a rear-facing child restraint at the right front passenger's position. See "AIR BAG OFF Switch" in the Index for more on this, including important safety information. 1-44