GMC 2007 Acadia - Manual (Page 216)

Speedometer and Odometer
The speedometer lets you see your speed in
both miles per hour (mph) and kilometers per
hour (km/h).
The odometer shows how far your vehicle has
been driven, in either miles or kilometers.
Your vehicle has a tamper-resistant odometer.
If your vehicle needs a new odometer installed,
the new one will be set to the mileage total of the
old odometer. If this is not possible, 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. If the mileage
is unknown, the label should then indicate
“previous mileage unknown”.
Tachometer
The tachometer displays the engine speed in
revolutions per minute (rpm).
Safety Belt Reminder Light
When the key is turned to ON or START, a chime
will come on for several seconds to remind
people to fasten their safety belts, unless the
driver’s safety belt is already buckled.
The safety belt light
will also come on
and stay on for
several seconds,
then it will flash for
several more.
This chime and light is repeated if the driver
remains unbuckled and the vehicle is in motion.
If the driver’s belt is already buckled, neither
the chime nor the light will come on.
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