Chevrolet 1997 Cavalier Owner's Manual page 51

Securing a Child Restraint in the Center
Rear Seat Position
You'll be using the lap belt.
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
2. Put the restraint on the seat. Follow the instructions
plate and pulling it along the belt.
for the child restraint.
3. Secure the child in the child restraint as the
instructions say.
4. Run the vehicle's safety belt through or around the
restraint. The child restraint instructions will show
you how.