Buick 2007 LaCrosse Owner's Manual page 116

DRIVE (D): This position is for normal driving.
It provides the best fuel economy for your vehicle.
If more power is needed for passing, and the
vehicle is:
•
Going less than 35 mph (55 km/h), push the
accelerator pedal about halfway down.
•
Going about 35 mph (55 km/h) or more, push
the accelerator pedal all the way down.
By doing this the vehicle will automatically
shift down to the next gear and have
more power.
Downshifting the transaxle in slippery road
conditions could result in skidding, see Skidding
under Loss of Control on page 302.
THIRD (3): This position is also used for normal
driving. However it reduces vehicle speed
more than DRIVE (D) without using your brakes.
You might choose THIRD (3) instead of DRIVE (D)
when driving on hilly, winding roads, when
towing a trailer, so there is less shifting between
gears and when going down a steep hill.
116
Notice: Driving in SECOND (2) for more than
25 miles (40 km) or at speeds over 55 mph
(90 km/h) may damage the transaxle. Also,
shifting into SECOND (2) at speeds above
65 mph (105 km/h) can cause damage. Drive in
THIRD (3) or DRIVE (D) instead of SECOND (2).
SECOND (2): This position reduces vehicle
speed even more than THIRD (3) without using
your brakes. 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.
FIRST (1): This position reduces vehicle speed
even more than SECOND (2) without using
your brakes. You can use it on very steep hills, or
in deep snow or mud. If the shift lever is put in
FIRST (1) while the vehicle is moving forward, the
transmission 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.