Automatic Transmission - Chevrolet Low Cab Forward 2023 Manual

162 Driving and Operating
It is desirable to fill up the tank with DEF
to keep the DEF remaining level warning
from reappearing.
When the outside temperature is low,
refer to "Adding DEF in Cold Weather"
earlier in this section.
4. If the buzzer does not stop, return the
engine control switch back to the LOCK
position and add more DEF, and then
start over from step 2 above.
5. Restart the engine.
See Driver Information Center (DIC) 0 59,
Warning Lights, Gauges, and Indicators 0 48,
Warning Buzzers 0 66, and Winter Driving
0 119.

Automatic Transmission

This part of the manual covers the basics of
automatic transmissions. With these
transmissions, you will find an Allison
®
Automatic Transmission Operator's Manual
in the vehicle that goes into more detail.
You will see a label in the driver door frame
that describes transmission in the vehicle.
Make sure you follow the instructions on
this label.
On an automatic transmission vehicle, the
driver does not use a clutch pedal when
pulling away, changing gears, or stopping;
he/she uses only the selector lever,
accelerator pedal, and brake pedal. Also,
selector lever operation methods differ for
models with P-range and models without
P-range. Practice learning the characteristics
of the automatic transmission vehicle and
how to correctly operate it. When the
vehicle is stationary, remember to keep the
brake pedal firmly pressed, and if necessary,
move the selector lever in the "P" or "N"
position (models with P-range) or "N"
position (models without P-range) and apply
the parking brake.
Creep : With the engine running and a gear
position other than P or N selected with the
selector lever, power reaches the wheels
even when the accelerator pedal is not
pressed, causing the vehicle to tend
to move.
Furthermore, the higher the engine speed,
the stronger the creep and the greater the
vehicle's tendency to move.
Starting
If your vehicle is equipped with a selector
lever with P-range, start the engine in either
the "P" or the "N" position. If your vehicle is
equipped with a selector lever without
P-range, start the engine in the "N" position.
The engine should not start in any other
selector position. If it does, something is
wrong. Have your truck checked by your
dealer as soon as possible.
Always apply either the foot brake or the
parking brake before shifting into any
driving position. This will prevent creeping.
The engine should be running at idle when
shifting from "P" or "N" (models with
P-range) or "N" (models without P-range) to
one of the driving positions. See Selector
Lever 0 170.
Caution
Do not apply water from a high-pressure
washer nozzle directly to the electric
connectors. Failure to observe this
precaution can lead to faulty operation of
the electrical system.
Caution
For models with P-range, never move the
selector into the "P" position while the
vehicle is in motion. This will damage the
automatic transmission.