On 79 vehicles, a weld between the fuel tank inlet check valve and the fuel tank can fail. As a result, a fuel odor or leak could develop and/or the Check Engine Light could illuminate. Any fuel leak always increases the risk of a fire. Dealers will inspect the fuel tank by serial number and replace it if it's on the list of affected fuel tanks. The recall began during November 2003. The General Motors recall number is 03055.