Chevrolet Aveo 2007 Owner's Manual page 114

AUTOMATIC OVERDRIVE (D4): This position is
for normal driving.
When operating your vehicle in severe cold
conditions, the transaxle may be prevented from
shifting into D4 gear until the transaxle fluid
has warmed up to it's operational temperature.
Notice: If your vehicle seems to start up rather
slowly or not shift gears when you go faster,
and you continue to drive your vehicle that
way, you could damage the transaxle.
Have your vehicle serviced right away. You
can drive in SECOND (2) when you are driving
less than 35 mph (55 km/h) and AUTOMATIC
OVERDRIVE (D4) for higher speeds until then.
SECOND (2): This position gives you more
power but lower fuel economy. You can use
SECOND (2) on hills. It can help control your
speed as you go down steep mountain roads,
but then you would also want to use your brakes
off and on.
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Notice: Do not drive in SECOND (2) at speeds
over 65 mph (105 km/h), or you can damage the
transaxle. Use AUTOMATIC OVERDRIVE (D4) as
much as possible. Do not shift into SECOND (2)
unless you are going slower than 65 mph
(105 km/h) or you can damage your engine.
FIRST (1): This position gives you even more
power but lower fuel economy than SECOND (2).
You can use it on very steep hills, or in deep
snow or mud. If the shift lever is put in FIRST (1),
the transaxle will not shift into first gear until
the vehicle is going slowly enough.
Notice: Spinning the tires or holding the
vehicle in one place on a hill using only the
accelerator pedal may damage the transaxle. If
you are stuck, do not spin the tires. When
stopping on a hill, use the brakes, or parking
brake to hold the vehicle in place.
If there is a malfunction with the automatic
transaxle, the malfunction indicator lamp (MIL) or
the HOLD indicator light will turn on or flash.
See Malfunction Indicator Lamp on page 180 or
Hold Mode Light on page 180.
Have your vehicle fixed as soon as possible.