Does it say KPH instead of MPH now at the bottom of the speedo as well? (MPH on the left under 0. KPH on the right under 140)
Is the stock stereo still in place? If so just go through the menu until you get to units and change it Imperial instead of metric. I'm fairly certain you're stuck in metric mode.
If you replaced the stereo with an aftermarket stereo then you may need a DIC adapter kit to change those settings or you may just need to reconnect your stock stereo change the setting and hopefully be good.
Last edited by CruisinG6; 08-02-2012 at 03:09 PM.