Pontiac Solstice 2008 Owner's Manual page 34

A booster seat (C-D) is a child restraint designed to
improve the fit of the vehicle's safety belt system.
A booster seat can also help a child to see out the
window.
1-30
Securing an Add-on Child Restraint
in the Vehicle
CAUTION:
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A child can be seriously injured or killed in
a crash if the child restraint is not properly
secured in the vehicle. Make sure the child
restraint is properly installed in the vehicle
using the vehicle's safety belt, following the
instructions that came with that restraint,
and also the instructions in this manual.
To help reduce the chance of injury, the child restraint
must be secured in the vehicle. Child restraint systems
must be secured in vehicle seats by lap belts or the
lap belt portion of a lap-shoulder belt. A child can
be endangered in a crash if the child restraint is not
properly secured in the vehicle.