Chevrolet 2007 Optra Owner's Manual page 112

AUTOMATIC OVERDRIVE (D): This position is
for normal driving.
Notice: Driving your vehicle if you notice that
it is moving slowly or not shifting gears as
you increase speed may damage the transaxle.
Have your vehicle serviced right away.
THIRD (3): This position is also used for normal
driving, however, it offers more power and lower
fuel economy than AUTOMATIC OVERDRIVE (D).
Here are some times you might choose THIRD (3)
instead of AUTOMATIC OVERDRIVE (D):
•
When driving on hilly, winding roads.
•
When going down a steep hill.
SECOND (2): This position gives you more power
but lower fuel economy. Use SECOND (2) on
hills. It can help control the vehicles speed as you
go down steep mountain roads, but then you
would also want to use your brakes off and on.
Notice: Do not drive in SECOND (2) at speeds
over 65 mph (105 km/h), or you can damage
the transaxle. Use THIRD (3) or AUTOMATIC
OVERDRIVE (D) 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.
112
FIRST (1): This position gives you even more
power but lower fuel economy than SECOND (2).
Use it on very steep hills, or in deep snow or
mud. If the shift lever is put in FIRST (1),
the transaxle does 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 Check Engine Light or the HOLD
indicator light will turn on or flash. See Malfunction
Indicator Lamp on page 172 or Hold Mode Light
on page 170.
Take your vehicle to your dealer as soon as
possible.