Chevrolet impala 2002 User Manual

Your speedometer lets you see your speed in both 
miles per hour (mph) and kilometers per hour (km/h).
Your odometer shows how far your vehicle has been
driven in either miles (used in the United States) or in
kilometers (used in Canada).

Your vehicle has a tamper

-

resistant odometer. If you see

ERROR, you’ll know someone has probably tampered
with it and the numbers may not be accurate.

You may wonder what happens if your vehicle needs a
new odometer installed. If the new one can be set to the
mileage total of the old odometer, then that will be done.
But if it can’t, then it will be set at zero and a label must
be put on the driver’s door to show the old mileage
reading when the new odometer was installed.

Your trip odometer tells how far you have driven since
you last reset it.

Your trip/select reset switch will go back and forth
between the odometer and the trip odometer if the
button is pressed and released within 1.5 seconds. 
If the button is pressed and held for longer than 
1.5 seconds while in the trip odometer mode, it will 
be reset to zero. If the button is pressed and held for
longer than 1.5 seconds while in the odometer mode, 
it will have no effect.

Your trip odometer will work no matter what position
your key is in, and even if the key isn’t in.