Set/Reset Button
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Pressing the Set/Reset button changes the display units. For example on the instrument panel cluster (IPC) when the Set/Reset button is pressed the speed will change between miles and kilometers.