Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Instruments and Controls 101
displays amber, the next change of
transmission oil and differential oil is
near or has been reached.
FUEL FILTER
When this message and light
display green, it shows the distance
remaining until the next fuel filter
change. When this message
displays amber, the next change of
fuel filter is near or has been
reached.
STEERING OIL
When this message and light
display green, it shows the distance
remaining until the next power
steering fluid change. When this
message displays amber, the next
change of power steering fluid is
near or has been reached.
TIRE ROTATION
When this message and light show
green with OFF, it means the
vehicle has been shipped from the
factory with no tire rotation interval
set. When this message displays
green it has the distance until the
next tire rotation displayed. Whenthis message displays amber the
next tire rotation is near or has
already been reached.
STARTER
When this message and light is
green, it displays the number of
engine starts remaining until a
starter motor is replaced. When this
message and light is amber, it
displays when the time for a starter
motor replacement is near or has
already been reached.
For the starter indicator light, the
displayed color will change from
green to amber when remaining
time is below 0 times and the
screen is selected.
For resetting or setting maintenance
data intervals, see
Driver
Information Center (DIC) (Diesel
Only) 093.
Hour Meter
HOUR METER
This message and light indicate how
many hours the engine has been
run. The figure(s) on the left side of the decimal point indicate hours
while the figure on the right side
indicates 1/10 of an hour.
Warning Buzzers
A warning buzzer may not sound if
there is a problem with the buzzer
system. If this occurs, the system
needs to be inspected. See your
dealer.
All Vehicles
A warning buzzer sounds under the
following conditions:
.
Seat Belt— continuous beep.
See Seat Belt Reminders 083.
Gasoline Vehicles
A warning buzzer sounds under the
following conditions:
.
Brake booster —continuous
beep. See Brake System
Warning Light (Parking Brake
Light) 084.
Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
102 Instruments and Controls
Diesel Vehicles
A warning buzzer sounds under the
following conditions:
.Brake booster —continuous
beep. See Brake System
Warning Light (Parking Brake
Light) 084
. Engine overheat —
continuous beep
. Low engine coolant —beep
. Engine alarm and automatic
shutdown —beep
. Diesel particulate filter (DPF)
switch regeneration —Three
short beeps or three long beeps
. Selective catalytic reduction
(SCR) system —one short
beep, three short beeps, nine
quick beeps, continuous beep
See Diesel Exhaust Fluid 0189 and
Engine Alarm and Automatic
Shutdown (Diesel Only) 0174.
Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Lighting 103
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . 103
Headlamp High/Low-BeamChanger . . . . . . . . . . . . . . . . . . . . 104
Flash-to-Pass . . . . . . . . . . . . . . . . 104
Hazard Warning Flashers . . . . . 105
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . 105
Cornering Lamps . . . . . . . . . . . . . 106
Interior Lighting
Instrument Panel Illumination Control . . . . . . . . . . . . . . . . . . . . . . 106
Cargo Lamp . . . . . . . . . . . . . . . . . . 107
Dome Lamps . . . . . . . . . . . . . . . . . 107
Exterior Lighting
Exterior Lamp Controls
Turning the light control switch to
the following positions will cause the
relevant lights to illuminate.
The light control switch can be used
when the engine control switch is
placed in the LOCK or ACC
position. Do not operate the
combination lights for an extended
time period with the engine stopped.
Otherwise, the battery may go dead,
making it impossible to restart the
engine.
9: Turns off all exterior lights.
;:Turns on the parking lights
including all exterior lights, except
the headlights.
2: Turns on the headlights
together with the parking lights,
sidemarker lights, roofmarker lights,
taillights, license plate light, and
instrument panel lights.
When you start the engine in
daytime, with the lighting switch off,
and release the parking brake, the
daytime running lights will come on.
See Daytime Running Lamps (DRL)
Indicator Light 092 and Turn and
Lane-Change Signals 0105.
Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
134 Driving and Operating
Warning (Continued)
If a warning light comes on or a
buzzer sounds while you are
driving, immediately stop the
vehicle in a safe place and
perform checks.
Slow down sufficiently when
approaching a curve. Applying the
brakes or sharply turning the
steering wheel while turning the
curve could cause the cargo to
shift, the tires to slip and the
vehicle to tip onto its side.
Avoid scraping the tire sidewalls
against curbstones or driving over
dips and protrusions in the road
surface. You could damage the
tires, resulting in a blowout or
flat tire.
You and others could be seriously
injured.
Pulling Away After Stopping
and Parking
Before pulling away, check that
there are no children or obstructions
around the vehicle and confirm that
it is safe to pull away.
If you cannot see the area behind
your vehicle well enough to confirm
it is safe to back up, get out of the
vehicle and check behind it.
Make it a habit to look around and
confirm that it is safe to pull away
after a temporary stop (at traffic
lights, for example).
If the Windshield Fogs Up
Use the heater to blow hot air on the
windshield or dehumidify the cabin
using the air conditioner and place
the outlet selector knob in the
5or
4position.
Place the air selector lever in the
outside air position.
Nighttime Visibility
If there is an old film on the
windshield, the lights of oncoming
traffic will be reflected in many directions, making it hard for you to
see ahead. Use glass cleaner to
clean the glass and the wiper
blades.
Worn wiper blades cannot wipe the
windshield clean and thus cannot
maintain visibility. When the wiper
blades become worn, replace them
with new ones.
Do Not Attach Accessories to
the Windshield or Windows
{Warning
Do not attach ornaments, films or
other accessories to the
windshield or windows. They
would impair visibility. Also, any
plastic suction cups used to
attach accessories could cause a
fire or other accident by acting as
lenses.
You and others could be seriously
injured.
Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Driving and Operating 135
Never Stop the Engine While
Driving
{Warning
Do not move the engine control
switch away from the "ON"
position while the vehicle is being
driven.
If the engine stops while the
vehicle is moving, the brake
booster does not work, and the
brakes would not work properly.
The engine could also be
damaged.
Stopping the engine while driving
would be extremely dangerous
because the power steering
would stop working, making the
steering wheel extremely hard
to turn.
Stopping the engine while driving
would be extremely dangerous
because the warning lights,(Continued)
Warning (Continued)
indicator lights and other
electrical circuitry would
completely stop working.
Placing the engine control switch
in the "LOCK" position while
driving would be extremely
dangerous because the key could
come out, causing the steering
wheel to lock so that you could
not turn it.
You and others could be seriously
injured.
Avoid Unnecessary Idling of
the Engine
If the engine idles too long, the
engine coolant temperature will fall
below the operating range. Low
engine operating temperature
causes several conditions that are
harmful to engine operation and life.
Incomplete combustion of fuel in an
engine that is not fully warmed-up
causes crankcase dilution and
forms lacquer and gummy deposits on valves, pistons, and rings. It also
causes rapid accumulation of
sludge within the engine.
Driving at Night
Nighttime driving is more dangerous
than daytime driving because the
field of view is narrower. Keep your
speed down, and maintain an ample
headway distance.
Metallic Plinking Sound from
the Muffler
Immediately after stopping the
engine, you may hear a metallic
plinking sound from the muffler. This
sound occurs as the muffler cools
down and contracts. It does not
indicate an abnormality or
breakdown.
When the Silencer and
Exhaust Pipe are Hot
{Warning
When the engine is running and
immediately after vehicle
operation, the DPF, silencer, and
(Continued)
Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Driving and Operating 137
breakdown on a highway
represents a hazard to other
vehicles and can cause an
accident. Concentrate on safe
driving. Remember to perform
daily pre-operation inspections
and use highway driving
techniques. When performing
daily pre-operation inspections,
perform the checks shown in the
table on the left with particularly
great care.
Refer toOwner Checks and
Services 0367.
. When merging with traffic on a
highway, use the turn signal
lights to indicate your intentions
ahead of time. Speed up
sufficiently when you are in the
acceleration lane. Pay attention
to vehicles behind you and to
conditions in the lane you are
joining. Merge in such a way that
you do not obstruct vehicles in
the lane.
. Your sense of how fast you are
traveling becomes distorted on
long highway drives. Constantly keep an eye on the
speedometer, and maintain a
suitable headway distance.
. During high-speed driving, even
a little turn of the steering wheel
causes a big movement of the
vehicle. Turn the steering wheel
slowly.
. Excessive use of the brake
pedal is extremely dangerous
because it rapidly wears the
brake linings and causes brake
fade. Make effective use of the
engine brake and the exhaust
brake when you want to
decelerate.
. When you want to turn off a
highway, use the turn signal
lights to indicate your intentions
ahead of time. Paying attention
to vehicles behind you, turn off
the highway smoothly so as not
to obstruct other vehicles.
Brake Fade : Frequent use of the
brakes can cause the brakes to
overheat so that the frictional force
of the brake linings decreases and the brakes become less effective
than normal. This phenomenon is
called brake fade.
Braking
Brake Operation
The brakes give strong braking
force with only light pressure on the
pedal. Do not press the brake pedal
hard except in the event of an
emergency.
Actual stopping distances vary
greatly. Your ability to stop safely
will be greatly affected by the
surface of the road, whether it is
pavement or gravel; the condition of
the road, whether it is wet, dry or
icy; tire tread; the condition of the
brakes; the weight of the vehicle;
the weight of the load; and the
amount of brake force applied.
Please allow for realistic stopping
distances to avoid unnecessary
heavy braking. That means better
braking, longer brake life and safer
driving.
Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
138 Driving and Operating
Stopping Distance
The stopping distance of a vehicle
involves reaction time and braking
distance. Deciding to push the
brake pedal is reaction time.
Applying the brake pedal until the
vehicle comes to a complete stop is
braking distance. Average reaction
time is about three-fourths of a
second. But that is only an average.
It might be less with one driver and
as long as two or three seconds or
more with another. Age, physical
condition, alertness, coordination
and eyesight all play a part. Braking
distance will vary based reaction
time, the amount of force applied to
the brake pedal and the speed of
the vehicle.When driving, bear the stopping
distance in mind. Maintain a speed
and headway distance that allow
you to stop safely even if a hazard
occurs.
Overriding Accelerator with
Brakes (Gasoline Only)
In the unlikely event the accelerator
pedal becomes stuck, apply the
brakes firmly and steadily to reduce
engine power and bring your vehicle
to a safe stop. Turn the engine off,
move the selector lever to the
“P”
(Park) position, and apply the
parking brake. In a safe location,
inspect the accelerator pedal for any
interference and remove the item
causing the interference, if any is
found. If none is found and the
condition persists, have your vehicle
towed.
Braking Techniques
For the most effective braking and
for maximum life from brake system
components, follow these
suggestions when possible: .
Apply the brakes gradually as
road and load conditions permit.
Reduce pedal pressure as
speed drops so that a very light
pressure is used at the end of
the stop.
. Do not pump the brake pedal as
this will only deplete the vacuum
reserve or the hydraulic brake
booster (HBB) accumulator
reserve.
. To get maximum braking while
maintaining vehicle control, use
a "squeeze" braking technique.
Do this by pushing on the brake
pedal with steadily increasing
pressure. If possible, steer
around obstacles when there is
not enough room to stop.
Brake System Warning Light
Caution
If brake low vacuum warning light
(4500HD, 4500XD models), brake
booster warning light (5500HD,
5500XD models), or brake system (Continued)
Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Driving and Operating 139
Caution (Continued)
warning light comes on during
operation, have brake system
checked immediately.
Refer to Warning Lights, Gauges,
and Indicators 076.
When the Brakes Do Not Work
{Warning
It is very dangerous to suddenly
pull the parking brake lever all the
way while moving at high speed.
Reduce speed first by shifting
down and then gradually pull the
parking brake lever.
You and others could be seriously
injured.
(Diesel Only) The exhaust brake
should be turned on as soon as
service brake malfunction is
detected. This will slow the engine
speed. With the engine speed under
control and providing the grade conditions permit, the transmission
can be progressively downshifted
using the exhaust brake in each
gear. Eventually the exhaust brake
should slow the vehicle to a
controllable
“crawl.”Gradually pull
the parking brake lever while firmly
holding on to the steering wheel.
Stop the vehicle on the side of the
road. The vehicle should not be
driven further until corrective
measures are taken.
See Exhaust Brake (Diesel Only)
0 222 andParking Brake 0221.
(Gasoline Only) If the brakes do not
work in an unexpected situation,
promptly shift down from D6, D4,
2nd and then to 1st gear using the
selector lever to reduce the speed
and gradually pull the parking brake
lever to stop the vehicle on the side
of the road while firmly holding on to
the steering wheel.
See Parking Brake 0221. Riding the Brake
{Warning
"Riding the brake" by resting your
foot on the pedal, when you do
not intend to brake, can overheat
the brakes and wear out the
brake linings faster. This may also
damage the brakes and will waste
fuel. It can also result in reduced
braking performance.
You and others could be seriously
injured.
Applying the Parking Brake
Except in an emergency, do not
apply the parking brake until the
vehicle has come to a complete
stop. Applying the parking brake
before the vehicle has stopped can
cause a breakdown.
Refer to
Parking Brake 0221.
Parking Safely on a Slope
Avoid parking your vehicle on a
slope as much as possible and
choose a level and flat place. If you