How do you change from KH/M to MPH on the 2009 Impala?
Go into the settings tabs, the little buttons on the dash. It either the first or second tab. Starting with the top one keep pushing it until the words Metric/English come up. Then hold the check mark button for 3 seconds, it will change from km/hr to m/hr. Repeat the process to return to metric.
Just confirmed that it is the 2nd tab down on the dash.
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