Do not drive until the head restraints for all occupants are installed and adjusted properly.
See Head Restraints.
Chevrolet Cobalt Owners Manual. Securing a Child Restraint in a Rear Seat Position
When securing a child restraint in a rear seating
position, study the instructions that came with your child
restraint to make sure it is compatible with this vehicle.
If your child restraint has the LATCH system, see
Lower Anchors and Tethers for Children (LATCH) for how to install your child r ...