Chevrolet 4500 HD 2023 Manual page 171

170 Driving and Operating
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
Never move the selector into the P
position when the vehicle is in motion.
This will damage the automatic
transmission.
Firmly press the brake pedal to prevent the
vehicle from moving even if it is stopped on
a level road, and move the selector lever
into P and firmly apply the parking brake as
needed.
The engine speed rises and creeping will be
stronger than usual during the conditions
noted below. Keep the brake pedal firmly
pressed:
Immediately after engine start up.
While the air conditioner is running.
During the diesel particulate filter (DPF)
regeneration.
How to Use the Automatic Transmission
Warning
Before starting the engine, move the
selector lever into P or N (P is preferred),
make sure the shift indicator indicates P
or N, pull up the parking brake lever and
firmly press the brake pedal.
When moving the selector lever to any
position other than P, be sure to press
the brake pedal.
Never leave the driver's seat with the
selector lever placed in D, 2, 1, R, or N.
The vehicle may start moving. When
leaving the driver's seat, be sure to move
the selector lever into P and securely set
the parking brake.
When you move the selector lever into D,
2, 1 or R, creep will cause the vehicle
to move.
When pulling away from a standstill, you
must control the speed using only the
accelerator pedal. Operate the accelerator
pedal carefully.
Warning (Continued)
Do not operate the selector lever while
pressing the accelerator pedal. The vehicle
may make a sudden start, possibly
causing an accident.
You and others could be seriously injured.
When pulling away, visually check the
position of the selector lever. If you always
press the push button while operating the
selector lever, the lever may occasionally
move to the other gear position against
your intentions.
Practice operating the selector lever between
the N and D without pressing the push
button.
Do not operate the selector lever while
pressing the accelerator pedal. Doing so is
dangerous because the vehicle would
suddenly move.
Do not operate the automatic transmission
at or near stall condition for more than
five seconds. Stall condition is when the
transmission is in one of the driving ranges,
the engine is running at high speed, but the
(Continued)
drive wheels are unable to move. This
condition might occur if the vehicle is stuck