tow CHEVROLET LOW CAB FORWARD 2018 User Guide

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
74 Instruments and Controls
This light comes on briefly when the
ignition is turned on, but the engine
is not running, as a check to show
the light is working. It should go out
when the engine is started.
If the light stays on, or comes on
while driving, there may be a
problem with the electrical charging
system (such as a loose or broken
fan belt). Pull off to a safe place well
clear of traffic and contact your
dealer. Driving while this light is on
could drain the battery.
Check and Corrective Action1. Check to see if the fan belt is broken or loose.
2. If the fan belt is loose, adjust the tension.
3. If the fan belt is broken or there is no abnormality in the fan
belt, see your dealer for
service.
See Battery 0247, Jump Starting -
North America 0287, and Engine
Drive Belt Routing 0341.Malfunction Indicator
Lamp (Check Engine
Light)
This light should come on to show
that it is working when the engine
control switch is turned to the ON
position, and then should go out
after the engine is started.
If this light stays on or comes on
while the engine is running, it
indicates a malfunction with the
engine electronic emission control
system. Avoid driving at high
speeds and have the vehicle
inspected by your dealer.
If this light comes on when the fuel
tank is empty, you do not need to
have your vehicle serviced. See
Running Out of Fuel 0212. If this light comes on intermittently
or continuously while driving,
service is required. Even if the
vehicle is drivable and does not
require towing, see your dealer as
soon as possible. Continued driving
without having the system serviced
could cause damage to the
emission control system. It could
also affect fuel economy and
drivability.Service Vehicle Soon
Light
This light comes on briefly when the
engine control switch is in the ON
position, but the engine is not
running, as a check to show the
light is working. It should go out
when the engine is started.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Instruments and Controls 75
If the light stays on, or comes on
while driving, the vehicle control
system may be malfunctioning. Take
the vehicle to your dealer for service
as soon as possible.
Brake System Warning
Light (Parking Brake
Light)
This light should come on briefly
when the engine control switch is
turned to the ON position, and then
should go out after the engine is
started.
Brake System Warning Light
If the light remains on after engine
start up or comes on during
operation of the vehicle, it means
that there is something wrong with
part of the brake system.The brake system warning light
comes on while the engine is
running (after startup) in the
following situations:
.
Drop in the level of brake fluid
(due to brake lining wear or fluid
leakage).
. Abnormality in the charging
system (such as an alternator
malfunction or loose or split
fan belt).
. Abnormality in the anti-lock
brake system (ABS) and
Electronic Braking force
Distribution (EBD) functions.
(The ABS warning light and
brake system warning light will
illuminate at the same time.) See
Antilock Brake System (ABS)
Warning Light 077.
To serve as a reminder, the light
should stay on when the parking
brake is not fully released, and the
engine control switch is on. Have
the system repaired if the light does
not come on when it should. If this
warning light does not go away,
brake inspection and maintenance
should be performed.
Check and Corrective Action
1. Check to see that the parking brake has been fully released.
If it has, check the following:
2. Turn on the exhaust brake to help slow the vehicle.
3. Pull off the road and stop carefully. Remember that
stopping distances may be
longer, the pedal may be
harder to push, and the pedal
may go down farther than
normal.
4. Check the brake fluid reservoir on the left side of the
instrument panel. If low, add
fluid as needed.
5. If the brake fluid is not low: Try out the brakes by starting and
stopping on the shoulder of the
road, then either drive
cautiously at a safe speed to
the nearest dealer for repair,
if you judge driving to be safe;
or have the vehicle towed to
the nearest dealer for repair.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Infotainment System 107
CD, C-thru Disc with transparent or
translucent recorded parts may not
be inserted and ejected accurately.
Please do not use them.
SACD (Super Audio CD) can only
be played in the CD level of a
hybrid disc.
CCCD (Copy Control CD) may not
play as it does not meet the
standard CD requirements.
CD-EXTRA can be played as a
music CD. The sound of a data
track of a Mixed Mode CD cannot
be played. Only music tracks can be
played. A Mixed Mode CD mixed
with DTS can also not be played
accurately. This device accepts
8 cm (3 in) CD. Plug in the device
directly without using an adapter,
etc. to avoid damage.
When Removing a Disc
Do not leave discs inside the player
or partially inserted for a long time.
This may scratch the discs and
make them unusable. Remove the
disc horizontally from the main
device. Do not pull it violently
towards the top.Also do not pull it down hard while
removing. The disc may become
damaged and the audio may skip.
Do not insert objects other than
discs into the disc slot or insert
more than one disc at a time.
Handling a Disc
Avoid exposing the disc to direct
sunlight and always keep it in a
case. Otherwise, the disc will bend
and become unusable.
Do not stick any paper tape to the
recording side or the label side as it
may lead the disc to malfunction.
Do not use a disc with cracks or if it
is severely bent as it may lead to
damage.
Hold the disc without touching the
recording side as this may make the
disc dirty and lead to the audio
skipping.
Using benzene, record disc cleaner,
or anti-static fluids may damage the
disc. Using a dirty disc will damage
the disc and lead to audio skipping.
When the disc is dirty, use a
commercial disc cleaner to gently
clean it from the inside to the
outside. Do not use lens cleaner.
Do not use the types of disc
described below because such
discs may cause a breakdown.
.
Adapters or discs with special
properties, such as Dual Discs
and printable discs.
. Discs with transparent or
semitransparent sections on the
recording side.
. Discs with copy protection.
New Disc
Some new discs may have burrs
found in the center hole or at the
edges. Remove these burrs with a
ballpoint pen, etc. before using
the disc.
If they are not removed, the disc
may not be read accurately and
cause improper operation.
Rental Discs
Do not use any disc that has
cellophane tape or any rental disc
that has glue from the label exposed

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Climate Controls 117
position, and turn the temperature
control knob fully towards the high
temperature direction.
Set the fan speed control knob to
the maximum speed position.
Bi-Level Heating :Set the outlet
selector knob to the
)position. Set
the air selector lever to the
P
position. Set the temperature control
knob to the middle position.
Adjust the fan speed control knob
as desired. The air from the floor
outlets is warmer than the air from
the upper outlets in this position.
However, when the temperature
control knob is moved to either the
full hot or the full cold position, the
air from the floor outlets and the air
from the upper outlets will be the
same temperature. This position can
give cool upper level air and warm
floor level air when the temperature
control is adjusted in between cold
and hot. This is useful in cool
weather with bright sunlight
conditions. Defogging and Defrosting the
Windshield
Defogging :
Set the outlet selector
knob to the
1position. Set the air
selector lever to the
Pposition.
Turn the temperature control knob
to a high-temperature position
according to your preference. For
defogging in the summer months,
set the temperature control knob to
any desired position.
Set the fan speed control knob to
any speed position, except the off
position. The A/C compressor
automatically operates when the
1
position is selected. Defogging is
performed very effectively with the
dehumidifying effect.
Defrosting : Set the outlet selector
knob to the
1position. Set the air
selector lever to the
Oposition.
Turn the temperature control knob
fully towards the high-temperature
direction. Set the fan speed control
knob to the maximum speed
position. After defrosting, be certain to return
the air selector lever to the
P
position. Failure to do so will cause
the windshield to fog up, impeding
forward visibility.
Cooling
Normal/Moderate Cooling :
This
setting is suitable for extended
periods of cooling or moderate
cooling. Press the A/C switch to the
on position.
Set the outlet selector knob to the
Hposition for normal cooling or set
it to the
)position for moderate
cooling. Adjust the temperature
control knob to the desired position.
Adjust the fan speed control knob
as desired
Maximum Cooling : Set the outlet
selector knob to the
Hposition.
Press the A/C switch to the on
position. Move the air selector lever
to the
Oposition.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
118 Climate Controls
Turn the temperature control knob
fully towards the low-temperature
direction. Set the fan speed control
knob to the maximum speed
position.
After prolonged parking in direct
sunlight, open the windows or doors
to ventilate the interior of the cab
and release the heat.
During cooling operation, mist may
come out of the air outlets. This
results from quick cooling of humid
air, and does not indicate any
problem.Air Vents
1. Driver Side Outlets. Airflowdirection is adjustable.
2. Windshield Outlets. Air is delivered towards the
windshield.
3. Passenger Side Outlets. Airflow direction is
adjustable. 4. Door Windows Outlet. Air is
delivered towards the door
windows
5. Foot Outlets. Air is delivered towards the feet.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
130 Driving and Operating
1. Hold the regular brake pedaldown 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 check 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.
Frequent use of the foot brakes can
cause vapor lock and brake fade,
resulting in reduced brake
effectiveness.
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.
Vapor Lock : If the brakes overheat
due to frequent use, the heat can
cause the brake fluid to boil so that
air bubbles are created in the brake
fluid. Pressing the brake pedal
simply compresses the air bubbles;
pressure is not transmitted to the
wheel cylinders, so the brakes' effectiveness sharply deteriorates.
This phenomenon is called
vapor lock.
Even so, you should be very careful
when using engine braking in a low
gear because the engine is likely to
over-rev.
See
Exhaust Brake 0201 and
Selector Lever 0194.
Do not adjust the exhaust brake
valve.
The engine should never be allowed
to exceed the governed speed.
Supplement the exhaust brake with
vehicle service brakes intermittently
and/or shift to higher transmission
gear to prevent engine overspeed.
A rule of thumb for gear selection is
that the vehicle should be driven
down a grade in the same gear that
would be used to climb that grade.
{Warning
To reduce the risk of personal
injury, before going down a steep
or long grade, reduce speed, turn (Continued)

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
136 Driving and Operating
Remove snow that has stuck to the
inside of the fenders and to the
brake hoses. Otherwise, it may
damage components. After driving
on a salted road, wash the
underside of the vehicle as soon as
possible to prevent the salt from
causing rust. Spraying water under
high pressure is an effective way to
get the salt off.
After washing the vehicle, wipe the
door openings dry.
If the Vehicle Is Stuck
When Driving on Bad Roads
Freeing the Vehicle from Sand,
Mud, Snow, and Ice
If your vehicle gets stuck in sand,
mud, snow or ice, move the selector
lever from "Second" to "Reverse".
Apply a light pressure to the
accelerator pedal while the
transmission is in gear. Remove
your foot from the accelerator and
press the brake pedal while shifting.
Do not race the engine. For best
traction, avoid spinning the wheels.
When you cannot avoid drivingthrough deep mud, using tire chains
is an effective way to avoid getting
stuck.
Do not allow wheels to spin freely in
mud, sand, snow, ice or other poor
road conditions. This free spinning
will damage the rear axle. Even
vehicles equipped with LSD (Limited
Slip Differential) have traction
limitations. If your vehicle gets stuck
and it is difficult to extricate,
immediately stop driving and have
the vehicle towed. Spinning wheels
for an extended period of time may
cause abnormal noises or
malfunction to LSD.
Do not spin wheels faster than
32 km/h (20 MPH). Damage may
result from excessive wheel
spinning, including tire, transmission
and/or rear axle malfunction.
When driving in sand or mud, avoid
hard braking, sudden acceleration
and sharp turns of the steering
wheel. Such actions could get the
vehicle stuck and make it difficult to
extricate.
After driving through deep mud: any
mud stuck to the vehicle can harm
the steering, brakes and powertrain.
Wash the vehicle and remove all
mud and other incrustation.
The vehicle speed sensors are fitted
on the wheels. When removing mud
and other incrustation, take great
care not to damage the
components.
Do not use a sharp implement to
remove mud. Sharp edges could
damage rubber parts.
Refer to
Antilock Brake System
(ABS) 0196 andExterior Care
0 293.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Driving and Operating 191
If you cannot move the selector
lever from the P position after
starting the engine, perform the
following necessary checks:
.Check that you are firmly
pressing the brake pedal.
. Check if the area where your
vehicle is parked is not a slope.
. If your vehicle is parked on a
downhill slope, the push
operation of the selector lever
may become heavy to move. In
this case, you can operate the
selector lever more smoothly by
pushing the selector lever
towards the front of the vehicle
while pushing the button.
Shift Lock System
When Starting Your Vehicle
The selector lever cannot be
operated from the P position to any
other position without the brake
pedal being pressed. Be sure to
operate the lever while pressing the
brake pedal. When Parking Your Vehicle
The key cannot be removed unless
the selector lever is securely placed
in the P position (key interlock
system). Be sure to place the
selector lever in the P position when
parking the vehicle.
The shift lock system is a system for
safety to prevent incorrect operation
of the automatic transmission. Use it
correctly and drive safely.
If You Cannot Move the Selector
Lever from the P Position
Caution
When the selector cannot be
operated from the P position to
any other position even after
performing the operation below
repeatedly, the shift lock system
may have a failure. Have the
vehicle inspected at your dealer.
If you cannot move the selector
lever from the P position after
starting the engine, perform the
following checks:
.
Check that you are firmly
pressing the brake pedal. When
the brake pedal is not pressed,
the shift lock system operates
and the selector lever cannot be
shifted from P to any other
position.
. Check if the area where your
vehicle is parked is not a slope.
. If your vehicle is parked on a
downside slope, the operation of
the selector lever may become
heavy to move. In this case, you
can operate the selector lever
more smoothly by moving the
selector lever towards the front
of the vehicle while pressing the
button.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
194 Driving and Operating
Selector Lever
Move the selector lever (2) to make
a shift into each gear position.
P (Parking) :Used when the
vehicle is parked or when starting
the engine. The P position is to be
used with the parking brake. The P
and N positions are the two
positions in which the engine can be
started.
R (Reverse) : Used when backing
up the vehicle. Bring the truck to a
complete stop before moving the
selector to the R position. N (Neutral) :
Can be used when
starting the engine, but for safety,
get in the habit of starting the
engine in the P position. The N
position is used should it become
necessary to tow your truck.
D (Drive) : The D position is for all
normal forward driving. The system
automatically selects the gear
according to the vehicle speed.
Press the overdrive off switch (3) to
switch to the overdrive ON position
for greater fuel economy.
2 (Second) : May be used when
driving on downhill roads or when
the engine brake is required. Select
the 2 position at speeds below
40 km/h (25 MPH) when traveling
down a moderate grade. Return the
selector to the D position for normal
driving.
1 (Low) : Used on steep downhill
roads or when strong engine
braking is required. Return the
selector to the D position for normal
driving.
{Warning
When pulling away, always
visually check the position of the
selector lever for safety.
Only push the button for gear
selection when necessary.
Pushing the button unnecessarily
may result in unintended gear
selection.
Never move the selector to the P
position when the truck is in
motion.
Do not run the vehicle with the
transmission in neutral. Not only
will the engine brake not function,
but the transmission will also be
damaged. You and others could
be seriously injured.
When repeatedly shifting between
forward and reverse gears for a
multiple-point turn, firmly press the
brake pedal and confirm that the
vehicle is completely stopped before
operating the selector lever.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Vehicle Care 217
Vehicle Care
General Information
General Information . . . . . . . . . . 218
California Proposition65 Warning . . . . . . . . . . . . . . . . . 218
California Perchlorate Materials Requirements . . . . . 218
Accessories and Modifications . . . . . . . . . . . . . . . . 218
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 218
Cab Tilting . . . . . . . . . . . . . . . . . . . . 220
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 222
Engine Cover . . . . . . . . . . . . . . . . . 222
Engine Oil . . . . . . . . . . . . . . . . . . . . 223
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 229
Engine Air Cleaner/Filter . . . . . . 231
Engine Coolant . . . . . . . . . . . . . . . 231
Engine Overheating . . . . . . . . . . 237
Power Steering Fluid . . . . . . . . . 240
Washer Fluid . . . . . . . . . . . . . . . . . 241
Brakes . . . . . . . . . . . . . . . . . . . . . . . 242
Brake Fluid . . . . . . . . . . . . . . . . . . . 246
Battery . . . . . . . . . . . . . . . . . . . . . . . . 247
Fuel Filter . . . . . . . . . . . . . . . . . . . . 248 Rear Axle (Gear Oil Viscosity
Chart) . . . . . . . . . . . . . . . . . . . . . . . 249
Rear Axle (Oil Level Check) . . . . . . . . . . . . . . . . . . . . . . 249
Noise Control System . . . . . . . . 250
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 251
Wiper Blade Replacement . . . . 252
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 254
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 254
Headlamps and Front Turn Signal . . . . . . . . . . . . . . . . . . . . . . . 257
Roofmarker Lamps . . . . . . . . . . . 261
Sidemarker Lamps (Including Turn Signal and Cornering
Lamps) . . . . . . . . . . . . . . . . . . . . . . 261
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 263
License Plate Lamp . . . . . . . . . . 263
Interior Lamps . . . . . . . . . . . . . . . . 264
Electrical System
Electrical System Overload . . . 264
Wheels and Tires
Wheels and Tires . . . . . . . . . . . . . 272 Tire Pressure . . . . . . . . . . . . . . . . . 284
Tire Rotation . . . . . . . . . . . . . . . . . 284
If a Tire Goes Flat . . . . . . . . . . . . 287
Jump Starting
Jump Starting - North
America . . . . . . . . . . . . . . . . . . . . . 287
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . 291
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . 293
Interior Care . . . . . . . . . . . . . . . . . . 299