1999 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 62

yellowblue Securing a Child Restraint in the Center Front Seat Position Securing a Child Restraint in the Center Rear Seat Position (Extended Cab Pickup) Don't use child restraints in this position. The restraints won't work properly. If you have an extended cab pickup, you can secure a child restraint in the center rear seat position. There is limited space in the rear seating area of an extended cab model. If you want to secure a child restraint in a rear seating position of an extended cab model, especially in the rear center position, be sure to study the instructions that came with your child restraint to see if there is enough room to secure your seat properly. 1-56