Buick 1999 LeSabre Owner's Manual page 82

AUTOMATIC OVERDRIVE (
normal driving. If you need more power for passing,
and you're:
D
Going less than about 35 mph (55 km/h), push your
accelerator pedal about halfway down.
D
Going about 35 mph (55 km/h) or more, push the
accelerator all the way down.
You'll shift down to the next gear and have more power.
THIRD (3): This position is also used for normal
driving, however, it offers more power and lower fuel
economy than AUTOMATIC OVERDRIVE (
Here are some times you might choose THIRD (3)
instead of AUTOMATIC OVERDRIVE (
D
When driving on hilly, winding roads
D
When towing a trailer, so there is less shifting
between gears
D
When going down a steep hill
SECOND (2): This position gives you more power but
lower fuel economy than THIRD (3). 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.
2-26
B
): This position is for
B
).
B
):
NOTICE:
Don't drive in SECOND (2) for more than
5 miles (8 km), or at speeds over 55 mph
(90 km/h), or you can damage your transaxle.
Use AUTOMATIC OVERDRIVE (
THIRD (3) as much as possible.
Don't 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 selector lever is put in FIRST (1), the transaxle
won't shift into first gear until the vehicle is going
slowly enough.
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B
) or