On certain vehicles, the sensing and diagnostic module (SDM), which controls the function of front air bags, may not operate properly. As a result, the front air bags may fail to deploy in a frontal crash. Also, the air bag warning lamp on the instrument panel may fail to provide warning that the system is inoperative.
Dealers will reprogram the SDM computer module. This recall began on February 22, 2007. Owners may contact GMC at 1-866-966-9463 or Saturn at 1-800-972-8876.