2017 CHEVROLET LOW CAB FORWARD alarm

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
90 Instruments and Controls
Do not run the engine with this light
on. It could damage the engine.
When this light comes on while
driving, a warning tone also sounds.
The oil level varies while the engine
is running right after it has stopped
or if the vehicle is on uneven
ground. As a result, the red engine
oil pressure warning light may
light up.
When checking the oil level for
Diesel engines, press the engine oil
level check switch on level ground
while the engine is cool. The red
engine oil pressure warning light in
combination with the green engine
oil level indicator light can indicate if
the engine oil level is OK or low.
While driving, on vehicles with the
5.2L diesel engine, this light will
also activate the engine alarm and
automatic shutdown system.
For gasoline vehicles, when this
warning light comes on, and the oil
level is correct, the lubrication
system may be faulty. See your
dealer for service.See
Engine Oil Level Indicator Light
0 90 and Engine Oil (Gasoline)
0 257 orEngine Oil (Diesel) 0251.
Engine Oil Level Indicator
Light
When the engine oil level check
switch is pushed with the engine
control switch in LOCK, the green
engine oil level indicator light will
come on if the engine oil level
is OK.
See Engine Oil Pressure Light 089
and Engine Oil (Gasoline) 0257 or
Engine Oil (Diesel) 0251.
Diesel Exhaust Fluid
(DEF) Warning Light
This light should come on briefly
when the engine control switch is
turned to the ON position, and go off
when the engine has started.
This light comes on as a warning
related to the selective catalytic
reduction (SCR) system. If this light
comes on, check the DEF gauge.
Add DEF if necessary. If DEF level
is OK, have your vehicle serviced
by your dealer.
Also see Diesel Exhaust Fluid
0 189.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Instruments and Controls 91
Engine Shutdown
Warning Light
The Engine Shutdown Warning light
comes on briefly when the engine
control switch is turned to the ON
position, as a check to show the
light is working. The light turns off
when the engine is started.
This light will come on when the
engine alarm and automatic
shutdown system is active. See
Engine Alarm and Automatic
Shutdown (Diesel Only)0174.
Reduced Engine Power
Light
This light comes on briefly when the
engine control switch is turned to
the ON position, and then should go
out after the engine is started.
Diesel Engines
If this light comes on while the
engine is running, it indicates power
is being reduced due to one or more
of the following conditions:
.
Malfunction of the engine or
exhaust electronic control
system.
. DEF level is too low or empty.
If this light comes on with the
malfunction indicator lamp, see your
dealer immediately. If this light comes on with the Refill
Diesel Exhaust Fluid (DEF) warning
light and the DEF warning light, refill
DEF as soon as possible.
See
“Refill Diesel Exhaust Fluid
(DEF) Warning Light” underDriver
Information Center (DIC) (Diesel
Only) 093.
See Malfunction Indicator Lamp
(Check Engine Light) 084 and
Diesel Exhaust Fluid (DEF) Warning
Light 090.
Gas Engines
If this light comes on while the
engine is running, this means the
engine is overheating and in
overheat protection mode. The
overheat protection mode alternates
firing groups of cylinders in order to
prevent engine damage. In this
mode, the engine loses power and
performance. This operating mode
allows your vehicle to be driven to a
safe place in an emergency. Driving
extended miles (km) and/or towing a
trailer in the overheat protection
mode should be avoided.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Instruments and Controls 97
Vehicle Messages
Vehicle Messages
(Diesel Only)
The Driver Information Center (DIC)
will display warnings, messages,
and other operation-related
information to alert of system
failures or other necessary checks
that should be performed. Use the
DIC selector to choose the desired
screen page or function.
Engine Overheat Warning
Light
OVERHEAT
This message displays and a
warning light appears when the
engine has overheated and the
engine coolant temperature gauge
needle reaches the red zone. At the
same time a buzzer sounds.
Immediately pull off to a safe place
to take the necessary actions and
check the vehicle. Do not shut down
an overheating engine immediately.Otherwise, the engine may seize
up. Take appropriate actions for
engine overheating.
This light will also activate the
engine alarm and automatic
shutdown system, if equipped.
See
Engine Alarm and Automatic
Shutdown (Diesel Only) 0174,
Engine Overheating 0269, Engine
Coolant 0263, and Engine Coolant
Temperature Gauge 082.
{Warning
When the engine coolant is still
hot, do not remove the radiator
cap. Hot vapor will come out and
you may be scalded. Add engine
coolant only when the engine
coolant temperature has dropped.
If this light comes on and stays on
while you are driving, your engine
coolant might have overheated
and your engine may be too hot.
You should pull off the road, stop
your vehicle and take appropriate
actions for engine overheating.
Low Coolant Warning Light
LOW COOLANT
If this message and light come on,
the system is low on engine coolant
and the engine may overheat.
A warning tone also sounds. If this
light comes on while driving, stop
the vehicle immediately and check
the cooling system for leaks. See
Engine Coolant 0263 and have the
vehicle serviced by your dealer. This
light will also activate the engine
alarm and automatic shutdown
system.
See Engine Alarm and Automatic
Shutdown (Diesel Only) 0174 and
Engine Shutdown Warning Light
0 91.
Water Separator (Fuel Filter)
Warning Light
WATER SEPARATOR
This message displays and a
warning light appears when the
level in the water separator on the
fuel line is beyond the specified
level. Drain water following the
instructions in the Water in Fuel

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
132 Driving and Operating
Driving and
Operating
Driving Information
Driver Behavior . . . . . . . . . . . . . . . 133
Distracted Driving . . . . . . . . . . . . 133
Control of a Vehicle . . . . . . . . . . . 133
Braking . . . . . . . . . . . . . . . . . . . . . . . 137
Steering . . . . . . . . . . . . . . . . . . . . . . 143
Driving on Wet Roads . . . . . . . . 143
Hill and Mountain Roads . . . . . 144
Winter Driving . . . . . . . . . . . . . . . . 145
If the Vehicle Is Stuck . . . . . . . . 148
Emergencies(Troubleshooting) . . . . . . . . . . . 148
Emergencies (Disabled Vehicle) . . . . . . . . . . . . . . . . . . . . . 161
Starting and Operating
New Vehicle Break-In . . . . . . . . . 162
Pedals . . . . . . . . . . . . . . . . . . . . . . . . 163
Ignition Positions . . . . . . . . . . . . . 163
Starting and Stopping theVehicle (Gasoline Only) . . . . . 165
Starting and Stopping the Vehicle (Diesel Only) . . . . . . . . 168
Operating Temperature . . . . . . . 172
Winter Cover . . . . . . . . . . . . . . . . . 172
Engine Heater . . . . . . . . . . . . . . . . 173 Engine Alarm and Automatic
Shutdown (Diesel Only) . . . . . 174
Idle Shutdown . . . . . . . . . . . . . . . . 174
High Idle System . . . . . . . . . . . . . 174
Engine Checks Before Operating . . . . . . . . . . . . . . . . . . . 175
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . 176
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 178
Running the Vehicle WhileParked . . . . . . . . . . . . . . . . . . . . . . 179
Diesel Particulate Filter
Diesel Particulate Filter . . . . . . . 180
Diesel Exhaust Fluid
Diesel Exhaust Fluid . . . . . . . . . . 189
Automatic Transmission
Automatic Transmission . . . . . . 204
Selector Lever . . . . . . . . . . . . . . . . 214
Overdrive Off . . . . . . . . . . . . . . . . . 215
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 217
Parking Brake . . . . . . . . . . . . . . . . 221
Exhaust Brake (Diesel Only) . . . . . . . . . . . . . . . . 222
Cruise Control
Cruise Control (Diesel) . . . . . . . 224
Cruise Control (Gas) . . . . . . . . . 227
Driver Assistance Systems
Speed Limiter (GasolineVehicle) . . . . . . . . . . . . . . . . . . . . . 231
Fuel
Fuel (Gasoline) . . . . . . . . . . . . . . . 231
Fuels in Foreign Countries . . . 232
Fuel for Diesel Engines . . . . . . . 232
Biodiesel . . . . . . . . . . . . . . . . . . . . . 233
Cold Weather Operation(Diesel) . . . . . . . . . . . . . . . . . . . . . 235
Water in Fuel (Diesel) . . . . . . . . 236
Running Out of Fuel (Diesel) . . . . . . . . . . . . . . . . . . . . . 238
Filling the Tank . . . . . . . . . . . . . . . 240
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . 241
Power Take-Off (PTO) . . . . . . . . 242

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
164 Driving and Operating
Caution
After starting the engine, do not
turn the engine control switch to
the START position. Otherwise,
the starter motor may be
damaged.
Using electrical devices such as
the audio system for an extended
time period with the engine
stopped can completely discharge
the battery.
The starting circuit, engine alarm
circuits and accessory circuits are
all controlled by the engine control
switch.
1 LOCK : Lock is in the position
fully counterclockwise. In this
position, the key can be inserted or
removed. To place the engine control switch in the LOCK position,
press and hold the key in the ACC
position and then turn it to the
LOCK position. If you will leave the
vehicle, remove the key and turn the
steering wheel until it locks. The
steering wheel will be locked to help
prevent theft.
2 ACC :
Accessory is in the first
position clockwise. In this position,
the audio and other accessories can
be used with the engine stopped.
3 ON : This ON position is in the
second position clockwise. The key
stays in this position while the
engine is running. Engine control,
warning circuits, gauge circuits, and
accessory circuits are energized.
For diesel engines only, the engine
cylinder heaters or glow plugs are
also turned on when the switch is in
the ON position. The wait-to-start
light will come on and stay on until
the glow plugs are heated enough.
When this light goes off, turn the
switch to the START position.
4 START : On all engines, start is in
the position furthest clockwise. The
engine is started in this position.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
174 Driving and Operating
Engine Alarm and
Automatic Shutdown
(Diesel Only)
If the system senses any of the
following conditions: high engine
temperature, low engine oil pressure
or low engine coolant, the
corresponding warning light and
engine alarm (shutdown) warning
light will come on. If the engine
alarm (shutdown) warning light
comes on, you will also hear a tone
alarm.
If your vehicle has the engine
shutdown feature, your engine will
shut down in 30 seconds.Pull safely off the road and shut off
the engine. Do not start it until the
cause of the problem is known, and
the problem is fixed. However, if the
engine shuts down when you are
still in traffic, you can restart the
engine and get another 30 seconds
of operation. Do this only if you
have to, since there is a problem
that can harm the engine if it is not
fixed. See
Engine Shutdown
Warning Light 091.
Idle Shutdown
On vehicles with a diesel engine,
Idle Stop is a dealer programmable
function which will automatically turn
off the engine, at idle, when specific
programmed conditions are met.
See your dealer for details. When
the Idle Stop light comes on, it alerts
you that programmed conditions
have been met and the engine is
about to shut down. This light stays
on after the engine has stopped.
This indicator light will come on
when the engine control switch is
turned to the ON position and then
should go out after approximately
3 seconds. If the idling stop function does not
initiate, a transmission related
problem may have occurred. Please
contact your dealer. (There is a
Diagnostic Trouble Code (DTC) that
inhibits the idling stop function when
the Check Trans warning light is not
illuminated).
High Idle System
Use high idle mode to increase
engine idle speed to 1,200 r/min
when the vehicle is stationary.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Service and Maintenance 375
Additional
Maintenance and Care
Owner Safety and Routine
Maintenance
Listed below are vehicle checks
which should be made periodically
by either the owner or a qualified
technician to ensure proper
performance and safety of your
vehicle. Take any problems promptly
to a technician for service advice.
For your safety and that of others,
any of the safety-related
components that may have been
damaged in an accident should be
checked and necessary repairs
performed before operating your
vehicle.
At the minimum, these routine
checks should be made every
6 months or 16,000 km
(10,000 miles) for diesel vehicles,
or every 9,600 km (6,000 miles) for
gasoline vehicles, whichever comes
first. Whenever repairs are
necessary, have them completed
before operating the vehicle.A: Parking Brake :
Park on a fairly
steep hill and hold the vehicle with
the parking brake only. This checks
holding ability.
Before checking item (B) below, be
sure to have enough room around
the vehicle. Then firmly apply both
the parking brake see Parking
Brake 0221 and the regular brakes.
Do not use the accelerator pedal.
If the engine starts, be ready to turn
off the engine control switch at
once. Take these precautions
because the vehicle could move
without warning and possibly cause
injury or property damage.
B: Starter Safety Switch : Check
by trying to start the engine in each
gear. The starter should crank only
at selector position "P" or "N".
C: Transmission Shift Indicator :
Check that the indicator points to
the gear chosen.
D: Steering : Be alert for any
changes in steering action. An
inspection or service is needed
when: the steering wheel is harder to turn or has too much free play,
or when there are strange sounds
when turning or parking.
E: Wheel Alignment, Balance, and
Tires :
Check tires for abnormal
wear or damage. Also, check for
damaged wheels. A pull right or left
on a straight and level road may
show the need for a wheel
alignment. A vibration of the
steering wheel or seat at normal
highway speeds may mean a wheel
balancing is needed. Check tire
pressure when the tires are "cold,"
at least monthly, and whenever the
vehicle is serviced.
Check the pressure more often if
daily checks show it's needed.
(Refer to "Recommended Daily
(Pre-operation) Inspections" under
Owner Checks and Services 0367).
Change tire pressure as needed
when changing loads.
F: Brakes : Be alert to illumination
of the brake system warning light or
brake low vacuum warning light
(4500HD, 4500XD models) or the
tone alarm, or changes in braking
action, such as repeated pulling to