2003 GMC Sierra 1500 Pickup Owner's Manual - Page 59

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. Crew Cab When you secure a child restraint in the center rear seat position of a crew cab, you'll be using a lap-shoulder belt that works the same way as the safety belts in the rear outside seat positions. For instructions on how to secure a child restraint using a lap-shoulder belt see Securing a Child Restraint in a Rear Outside Seat Position on page 1-49. Securing a Child Restraint in a Center Rear Seat Position Extended Cab 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 seat position of an extended cab model, especially in the rear center seat 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. When you secure a child restraint in the center rear seat position of an extended cab, you'll be using the lap belt. Be sure to follow the instructions that came with the child restraint. Secure the child in the child restraint when and as the instructions say. See Top Strap on page 1-42 if the child restraint has one. If your child restraint is equipped with the latch system, see Lower Anchorages and Top Tethers for Children (LATCH System) on page 1-46. If you have a extended cab or crew cab pickup, you can secure a child restraint in the center rear seat position. 1-52