Trailer Towing
WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The IPC illuminates the trailer towing indicator when the trailer tow is connected and the left or the right turn signal is activated. The hazard lamp/turn signal flasher sends a high output to the instrument cluster.