Bumper: Description and Operation

Bumper and Fascia Description

General Motors passenger vehicle bumpers are designed in order to withstand a collision into a fixed barrier at 4 km/h (2.5 mph). After absorbing the energy of the collision, the energy absorbers rebound to 80-90 percent of their original position. The energy absorbing capability of the front bumper and the rear bumper systems is achieved through a foam type energy absorbing structure in each bumper.


The following components are made of thermo plastic olefin or urethane:

* The front bumper fascia
* The rear bumper fascia


The thermo plastic olefin and urethane perform the following functions:

* Withstand minor impact
* Return to the original shape


Refer to PSD SIE TITLE Error: SIE linked to empty Cell ID 54663 in Plastic Panel Information and Repair for repair or refinishing information on the fascia.


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