Chevrolet 1979 Light Duty Truck Owner's Manual page 37

indicators are arranged with "Park" position at one end, followed in
sequence by "Reverse", "Neutral" and the forward driving ranges. All
automatic transmissions are equipped with a starter safety switch
designed to permit starting the engine only when the transmission
selector is in the "Park" or "Neutral" position. For additional engine
braking effect, as sometimes needed in mountainous driving, place the
transmission in an intermediate or low range.
P -
R-REVERSE
II-NEUTRAL
D-DRIVE
2 L'-LOW'
L'-LOW'
Notice
The following
transmission failure:
•
Shifting between forward and reverse driving range while
operating the engine at high speed or heavy throttle, such as when
the driving wheels are on snow or ice--commonly called
"rocking." (See correct method for "rocking" vehicle in Section
3 under "Freeing Vehicle from Sand, Mud, Snow or Ice.")
•
Shifting to Reverse ("R") or any forward range while operating
the engine at high speed in Neutral ("N").
•
Shifting to "Park" while vehicle wheels are still turning.
•
Operating the transmission at or near "stall" condition for periods
of more than 10 seconds. (Stall condition is when the engine is
running at high speed while the transmission is in a driving range
and the driving wheels aren't moving, such as when stuck in deep
sand or when the vehicle is against a fixed barrier.)
•
Holding vehicle on an upgrade with the throttle. (Use the regular
brakes to hold vehicle on an uphill grade.)
AUTOMATIC TRANSMISSION
PARK Use only when vehicle is stopped. Alter
perking brake is set.
For backing vehicle - from stop.
For standing (Brakes Applied).
For forward driving. Depress accelerator to floor
for extra acceleration below
depress accelerator half·way at speeds below
(50
30
mph
For driving in heavy traffic or on hilly terrain.
L,
Shift into
shift into second gear and remain in second
until the vehicle spee d or thrott:le are reduced
to obtain first gear operation in the same
manner as in
prevents the transmission from shifting to 3rd
gear.
For hard pulling through sand, snow or mud,
and for climbing or descending steep grades.
Shift into L' at any vehicle spee d , Depending
upon the axle ratio of the vehicle the trans­
mission will shift to second gear at any speed
above approximately
shift to lsi gear
L, range position prevents the transmission
from shifting out of first gear.
practices
65
mph
km/h).
at any speed. The transmission will
0
range. L 2 range position
(60
40
mph km/h) and will
as
speed is reduced below
could result
2-7
(100 km/h)
40.
in automatic