CAUTION!
•
Before moving the transmission gear selector out
of PARK, you must turn the ignition to the ON/RUN
position, and also press the brake pedal. Other-
wise, damage to the gear selector could result.
•
DO NOT race the engine when shifting from PARK
or NEUTRAL into another gear range, as this can
damage the drivetrain.
The following indicators should be used to ensure that
you have properly engaged the transmission into the
PARK position:
•
When shifting into PARK, pull the gear selector
toward you and move it all the way counterclockwise
until it stops.
•
Release the gear selector and make sure it is fully
seated in the PARK gate.
•
Look at the transmission gear position display and
verify that it indicates the PARK position (P).
•
With the brake pedal released, verify that the gear
selector will not move out of PARK.
REVERSE (R)
This range is for moving the vehicle backward. Shift into
REVERSE only after the vehicle has come to a complete
stop.
NEUTRAL (N)
Use this range when the vehicle is standing for pro-
longed periods with the engine running. The engine
may be started in this range. Apply the parking brake
and shift the transmission into PARK if you must exit
the vehicle.
WARNING!
Do not coast in NEUTRAL and never turn off the igni-
tion to coast down a hill. These are unsafe practices
that limit your response to changing traffic or road
conditions. You might lose control of the vehicle and
have a collision.
CAUTION!
Towing the vehicle, coasting, or driving for any other
reason with the transmission in NEUTRAL can cause
severe transmission damage.
For Towing A Disabled Vehicle
For Recreational Towing
DRIVE (D)
This range should be used for most city and highway
driving. It provides the smoothest upshifts and down-
shifts, and the best fuel economy. The transmission
automatically upshifts through all forward gears.
When frequent transmission shifting occurs (such as
when operating the vehicle under heavy loading condi-
tions, in hilly terrain, traveling into strong head winds, or
while towing a heavy trailer), select TOW/HAUL mode or
use the Electronic Range Select (ERS) shift control to
select a lower gear range
page 116. Under these
conditions, using a lower gear range will improve perfor-
mance and extend transmission life by reducing exces-
sive shifting and heat buildup.
If the transmission temperature exceeds normal operat-
ing limits, the powertrain controller will modify the
transmission shift schedule and expand the range of
torque converter clutch engagement. This is done to
prevent transmission damage due to overheating.
If the transmission becomes extremely hot or is in dan-
ger of overheating, the Transmission Temperature
Warning Light may illuminate and the transmission may
operate differently until the transmission cools down.
NOTE:
Use caution when operating a heavily loaded vehicle at
low speeds (such as towing a trailer up a steep grade,
or in stop-and-go traffic) during hot weather. In these
conditions, torque converter slip can impose a signifi-
cant additional heat load on the cooling system. Down-
shifting the transmission to the lowest possible gear
(when climbing a grade), or shifting to NEUTRAL (when
stopped in heavy traffic) can help to reduce this excess
heat generation.
During cold temperatures, transmission operation may
be modified depending on engine and transmission
temperature as well as vehicle speed. This feature
improves warm-up time of the engine and transmission
to achieve maximum efficiency. Engagement of the
torque converter clutch is inhibited until the transmis-
sion fluid is warm
On trucks with AS66RC or AS69RC transmission, FIFTH
and SIXTH gears may be inhibited briefly on cold starts
below 41°F (5°C), and during very cold temperatures
(-4°F [-20°C] or below), operation may briefly be limited
to third gear only. During this condition, the ability of
the vehicle to accelerate under heavily loaded condi-
tions may be reduced. In all cases, normal operation
will resume once the transmission temperature has
risen to a suitable level.
STARTING AND OPERATING
115
4
Summary of Contents for CHASSIS CAB 2024
Page 69: ...GETTING TO KNOW YOUR INSTRUMENT PANEL MIDLINE INSTRUMENT CLUSTER GASOLINE 67 3...
Page 71: ...HIGHLINE INSTRUMENT CLUSTER GASOLINE GETTING TO KNOW YOUR INSTRUMENT PANEL 69 3...
Page 75: ...MIDLINE INSTRUMENT CLUSTER DIESEL GETTING TO KNOW YOUR INSTRUMENT PANEL 73 3...
Page 77: ...HIGHLINE INSTRUMENT CLUSTER DIESEL GETTING TO KNOW YOUR INSTRUMENT PANEL 75 3...
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