Fusible Link
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2005 Pontiac Montana, 2005 Chevrolet Venture, 2004 Pontiac Montana, 2004 Oldsmobile Silhouette, and 2004 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
Fusible links are usually located between battery and starter or electrical center. For description and repair procedures, see Fig 1.