GMC 2010 Sierra 1500 Crew Cab Owner's Manual page 255

The speedometer shows the vehicle speed in both
miles per hour (mph) and kilometers per hour (km/h).
The odometer shows how far the vehicle has been
driven, in either miles (used in the United States) or
kilometers (used in Canada).
The Driver Information Center (DIC) can also display
the number of hours the engine has run. To display the
engine hours, turn the ignition off, press and hold the
reset button for at least four seconds. The hour meter
displays for up to 30 seconds, or until the ignition is
turned on. See
information.
or
for more
The trip odometer shows how far the vehicle has been
driven since the trip odometer was last set to zero.
Press the reset button, located on the instrument panel
cluster next to the voltmeter, to toggle between the trip
odometer and the regular odometer. Holding the reset
button for approximately one second while the trip
odometer is displayed will reset it.
To display the odometer reading with the ignition off,
press the reset button.
See
or
The tachometer displays the engine speed in
revolutions per minute (rpm). For a description of
how Grade Braking affects vehicle speed while the
Tow/Haul Mode is activated, see Grade Braking
®
(Allison Transmission ) under
for more information.
for more information.
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