Chevrolet 1957 Owner's Manual page 14

DRIVING WITH THE POWERGLIDE TRANSMISSION
The fjve selector lever positions illustrated are shown on the
Powerglide quadrant indicator located on the instrument ponel.
P
PARK
N
NEUTRAL
D
DRIVE
L
LOW
R
REVERSE
Holds the car immovable, even on steep grades.
Engine may be started and idled with lever in this
position. Selector lever must be lifted slightly before
it can be moved into Pork position.
With lever in this position, engine may be
starled
and idled.
For all normal driving. With lever in this position, the
Powerglide transmission will automatically select
the range best suited to any driving situation which
might arise. Merely place the selector lever in "D"
and press the accelerator for smooth, effortless
driving in city or country. Your Powerglide trans-
mission will automatically select whatever range your
type of driving may call for. At speeds below 45
miles per hour, Powerglide may be automatically
changed to low range for quick acceleration by
"stepping down" hard on the accelerator pedal.
Use only for pulling through deep sand or snow,
cI
imbing and descending steep hi lis and for additional
engine braking below 40 miles per hour on dry
pavement or below 12 miles per hour on wet
pavement.
Used for backing up. NEVER move selector lever
into this position unless the cor is at a standstill with
engine idling.
(lift
up lever to place in "Reverse
position").
Ate:
You may "rock" the car, to free it from mud, sand or snow,
by
depressing the accelerator pedal slightly and moving the selector
lever back and forth between "L" and "R" as required .
..