GMC 2001 Sierra 1500 Pickup Owner's Manual page 73

Securing a Child Restraint in the
Center Rear Seat Position
(Extended Cab and Crew Cab)
If you have an extended cab or a crew 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.
1-60
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 the earlier part about the top strap if the child
restraint has one.
1. Make the belt as long as possible by tilting the latch
plate and pulling it along the belt.