Chevrolet 4500 HD 2023 Manual page 123

122 Driving and Operating
Warning (Continued)
the engine running. To prevent a fire,
make sure there is no flammable
material near the muffler, DPF, and
exhaust pipe. Be careful not to get
burned by hot exhaust gases.
You and others could be seriously injured.
Do Not Forget to Release the Parking Brake
Pulling away with the parking brake still
applied can damage the brake system.
Before pulling away, make sure the parking
brake is not set by checking that the
parking brake indicator light is not on.
Be Sure to Have the Engine Running When
the Vehicle is Moving
Warning
When the engine is not running, the
power steering system does not work so
the steering wheel is hard to turn. Also,
the brake booster does not work so there
is little braking ability. If you coast down
a slope without the engine running, you
would not be able to properly control the
vehicle and could have a crash.
Parking, or Leaving Driver s Seat
Danger
It can be dangerous to get out of your
vehicle if the selector lever is not fully in
"P" (Park) or the parking brake is not
applied all the way. Your vehicle can roll
or move suddenly. You and others could
be seriously injured or killed.
To be sure your vehicle will not move,
even when you are parking on level
ground, follow the steps below.
1. Hold the service brake pedal down with
your right foot and apply the parking
brake all the way before shifting the
transmission. Follow the Parking Brake
instructions in this manual for your
vehicle.
2. To move the selector lever to "P" (Park),
hold in the button on the lever and push
the lever all the way toward the front of
your vehicle.
3. Turn the key to "LOCK".
4. Remove the key and take it with you.
5. Before you leave the driver's seat, be
sure the vehicle is not moving,
or confirm that your vehicle is in Park by
trying to pull the selector lever out of
"P" (Park) by pulling the selector lever
toward you without pushing the button.
If you can do this, it means that the
selector lever was not fully locked into
"P" (Park).
Driving Down a Long Slope
When driving down a long slope, use the
exhaust brake together with the foot brakes.
Using the exhaust brake and low-gears
reduces the work load on the foot brakes
and yields greater braking force. Even so,
use the foot brakes appropriately to prevent
the engine over-revving.
See Exhaust Brake 0 183 and
Selector Lever 0 177.
Frequent use of the foot brakes can cause
vapor lock and brake fade, resulting in
reduced brake effectiveness. Even so, you
should be very careful when using engine
braking in a low gear because the engine is
likely to over-rev.
Brake Fade : Frequent use of the brakes can
cause the brakes to overheat so that the
frictional force between the brake pads and
rotors decreases and the brakes become less
effective than normal. This phenomenon is
called brake fade.