GM Service Manual Online
For 1990-2009 cars only

The following components contain an energy absorbing fascia support brace which is made of a polystyrene material:

    â€¢ The front bumper fascia
    â€¢ The rear bumper fascia

Each fascia support brace is positioned between the following areas:

    â€¢ The vehicle
    â€¢ The bumper

GM vehicle bumpers withstand collisions into fixed barriers at 8 km/h (5 mph) and sustain minimal damage. After absorbing the energy of the collision, the bumper restores to the original position.