Cruise On-Off Switch
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of GENERAL MOTORS CORP.
The cruise on-off switch is a momentary contact type button located on the end of the cruise control switch. The purpose of the cruise on-off switch is to turn the cruise control system ON and OFF.