Air Bag Modules
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Air bag modules consist of an inflatable bag and an inflator. When vehicle is in an accident of sufficient force, SDM causes current flow through air bag deployment loops. Current passing through inflators ignites inflator charges, producing gas which rapidly inflates air bag modules.