Pontiac Sunbird Owner's Manual page 92

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 it must
be.
But if it can't, then it's 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.
Trip Odometer
(OPTION)
The trip odometer can tell you how far
your vehicle has been driven since you
last set the trip odometer to zero.
To set the trip odometer to zero, press
the knob to the right of it.
135
NOTICE
I
Tachometer
(omon!)
The tachometer displays the engine
speed in revolutions per minute (rpm).
r
Do not operate the engine with.k!--
tachometer in the sed area, or
engine damage may occur.
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