Defect
Long-term exposure to high absolute humidity and temperature, combined with high temperature cycling, may eventually degrade the propellant contained in the passenger-front airbag. This could cause the airbag to deploy with more force than normal. If the airbag inflator ruptures, fragments could be propelled toward vehicle occupants or cause damage to the airbag assembly, preventing its proper function. Note: For 2009 models listed, this recall only affects vehicles that were imported into Canada, and were originally sold or ever registered in certain areas of the United States that experience high or moderate levels of heat and humidity.
Safety Risk
If the vehicle is involved in a crash requiring an airbag deployment, the airbag inflator could rupture and create a risk of injury.
Remedy
General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to replace the passenger-front airbag. Note: The Canadian climate results in the propellant degrading slowly. This recall is being conducted as a precaution to address future risk. It is expected that all airbag inflators will be replaced before their function would be affected.