GMC 2007 Acadia Owner's Manual page 237

Trip/Fuel Menu Items
3
(Trip/Fuel): Press this button to scroll
through the following menu items:
ODOMETER
Press the trip/fuel button until ODOMETER
displays. This display shows the distance the
vehicle has been driven in either miles (mi)
or kilometers (km). Pressing the trip odometer
reset stem will also display the odometer.
To switch between English and metric
measurements, see "UNITS" later in this section.
TRIP A and TRIP B
Press the trip/fuel button until TRIP A or TRIP B
displays. This display shows the current distance
traveled in either miles (mi) or kilometers (km)
since the last reset for each trip odometer. Both
trip odometers can be used at the same time.
Pressing the trip odometer reset stem will
also display the trip odometers.
Each trip odometer can be reset to zero separately
by pressing the set/reset button or the trip odometer
reset stem while the desired trip odometer is
displayed.
The trip odometer has a feature called the
retro-active reset. This can be used to set the
trip odometer to the number of miles (kilometers)
driven since the ignition was last turned on.
This can be used if the trip odometer is not reset
at the beginning of the trip.
To use the retro-active reset feature, press and
hold the set/reset button for at least four seconds.
The trip odometer will display the number of
miles (mi) or kilometers (km) driven since the
ignition was last turned on and the vehicle
was moving. Once the vehicle begins moving,
the trip odometer will accumulate mileage.
For example, if the vehicle was driven 5 miles
(8 km) before it is started again, and then
the retro-active reset feature is activated, the
display will show 5 miles (8 km). As the vehicle
begins moving, the display will then increase
to 5.1 miles (8.2 km), 5.2 miles (8.4 km), etc.
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