2018 CHEVROLET LOW CAB FORWARD warning lights

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Vehicle Care 293
After Towing
After towing the vehicle, block the
rear wheels and install axle shafts
or driveshaft.
Apply the parking brake before
disconnecting from the towing
vehicle. Check and fill rear axle with
oil, if required.
Rear End Towing
When towing a vehicle with rear
wheels raised, secure the steering
wheel to maintain straight-ahead
position. Make certain that the front
axle is not loaded beyond the front
axle gross axle weight rating
(GAWR) as indicated on the
vehicle's VIN and weight rating
plate.
Special Towing Instructions1. All state and local laws regarding such items as
warning signals, night
illumination, speed, etc., must
be followed. 2. Safety chains must be used.
3. No vehicle should ever be
towed over 88 km/h (55 mph).
4. Loose or protruding parts of damaged vehicles should be
secured prior to moving.
5. A safety chain system completely independent of the
primary lifting and towing
attachment must be used.
6. Operators should refrain from going under a vehicle which is
being lifted by the towing
equipment unless the vehicle is
adequately supported by safety
stands.
7. No towing operation which for any reason jeopardizes the
safety of the wrecker operator
or any bystanders or other
motorists should be attempted.Appearance Care
Exterior Care
Exterior Finish
The paint finish on your vehicle
provides beauty, depth of color,
gloss retention and durability.
While cleaning the vehicle, do not
grip the roofmarker lights to prevent
damage or water leakage.
Washing
The best way to preserve your
vehicle's finish is to keep it clean by
washing it often.
Wash the vehicle in lukewarm or
cold water. Do not use hot water or
wash your vehicle in the direct rays
of the sun. Do not use strong soap
or chemical detergents. All cleaning
agents should be flushed promptly
from the surface and not allowed to
dry on the finish.
These vehicles are designed to
operate under normal environmental
conditions to withstand natural
elements. However, unusual

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
318 Service and Maintenance
Recommended Daily
(Pre-operation) Inspections
These checks are in addition to, not
instead of, any legally required daily
inspections. See related topics
under "Maintenance Schedule",
especially if problems are found.
For safe and comfortable driving,
keep record of the distances driven
and the condition of the vehicle
during operation. Perform
inspections at appropriate intervals,
and perform maintenance in
accordance with the findings of the
inspections. If an inspection reveals
an abnormality or there was an
abnormality the previous time the
vehicle was driven, have the vehicle
repaired by the nearest dealer
before it is driven again.1. Components that showed abnormalities during the
previous operation
.Check components that
showed abnormalities
during the previous
operation 2. Checks performed at the
engine
.Fan belt looseness and
damage
. Engine oil level
. Engine coolant level
. Power steering fluid level
3. Checks performed from the driver's seat
.Brake fluid level
. Brake pedal free play
. Operation of meters,
gauges and warning/
indicator lights
. Engine startability,
abnormal noise and color of
exhaust gases
. Parking brake lever stroke
. Windshield washer fluid
spray condition and
windshield wiper
effectiveness
. Windshield washer fluid
level .
Steering wheel position and
free play
. Operation of horn and turn
signal lights
. Door lock operation
4. Checks performed during a walk around the vehicle
.Illumination, flashing,
contamination, damage and
obstruction of lights
. Contamination, damage ad
obstruction of windows,
mirrors and reflectors
. Leaf spring damage
. Oil, engine coolant, fuel,
brake fluid and power
steering fluid leaks
. Water separator
5. Checking wheels and tires .Air pressure
. Cracks and other damage
. Abnormal wear
. Tread depth
. Mounting condition of all
wheel nuts

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Service and Maintenance 319
6. Checks performed after theengine startup
.Oil, engine coolant, fuel,
brake fluid and power
steering fluid leaks
. Inspect the exhaust system,
checking that the tailpipe is
clear
7. Checks performed while driving the vehicle
.Brake effectiveness
. Engine abnormal noises
Keep the Floor Around the Driver
Seat Clean and Tidy
{Warning
It is extremely dangerous to have
empty cans, empty bottles,
or other items rolling around on
the floor because they could get
trapped under the brake pedal
and prevent brake application.
For proper pedal operation, it is
also essential to lay floor mats (Continued)
Warning (Continued)
properly. Incorrectly installed floor
mats would hinder free movement
of the pedals.
Do not use the dashboard pocket
or the top of the dashboard as a
place to put items that could roll,
which could interfere with your
driving. You and others could be
seriously injured.
Choose Your Footwear Suitable
for Driving
{Warning
Choose footwear that ensures
proper operation of pedals when
driving the vehicle. Use of
footwear unsuitable for driving
may cause an accident. The
driver could be seriously injured
when not wearing the proper
footwear.
Electrical System
Following the after-delivery service,
it is the owner's responsibility to
check all wiring periodically for
cracked, chafed or oil-soaked
insulation and maintain it in a clean
and tight condition to ensure
satisfactory operation of the
electrical system.
Headlights and Turn Signal
Lights
Turn the engine control switch to the
"ON" position, and then check the
way in which the headlights, turn
signal lights, and other exterior
lights come on and flash. In
addition, press the brake pedal to
confirm whether the stop lights
come on, and shift the transmission
to "R" position to confirm whether
the back up lights come on. Also
examine the lights for discoloration,
damage, and looseness.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
324 Service and Maintenance
one side, unusual sounds when
braking, increased brake pedal
travel or harder pedal. The front and
rear brakes are attached to an auto
adjuster mechanism. If there are no
defects, as the pedal travel is
properly maintained, adjustments
are not necessary. Check regularly
that the brake fluid reservoir
(left-hand side of the instrument
panel) or HBB reservoir (5500HD,
5500XD models: left side behind the
cab) is properly filled and check for
fluid leaks. Any of these conditions
could indicate the need for brake
system inspection and/or service.
G: Exhaust System :Be alert for
any changes in the sound of the
exhaust system or any smell of
fumes. These are signs the system
may be leaking. Have it checked
and/or repaired at once. (Refer to
"Engine Exhaust Emissions Caution
(Carbon Monoxide)" under Engine
Exhaust 0159).
H: Windshield Wipers and
Washers : Check operation and
condition of the wiper blades. Check
the flow of the washer spray. I: Defroster :
Turn the outlet
selector knob to "Defroster" and the
fan speed control knob to the fully
clockwise position. Then check the
airflow from the ducts at the inside
base of the windshield.
J: Rearview Mirrors and Sun
Visors : Check that friction joints
hold mirrors and sun visors in place.
K: Horn : Sound the horn, now and
then, to be sure it works.
L: Lap-Shoulder Belts : Check the
seat belt system (including webbing,
buckles, latch plates and anchors)
for proper operation, and for
damage.
M: Seat Adjusters : When
adjusting the driver's manual seat,
be sure the seat adjusters latch by
pushing the seat forward and
backward. Do not attempt to adjust
the seat when the vehicle is in
motion.
N: Lamps : Check panel lighting,
warning lamps, indicator lamps and
interior lamps. On the outside,
check: license plate lamps, side
marker lamps, reflectors on outside mirrors, headlamps, parking lamps,
identification and clearance lamps,
taillights, brake lamps, turn signals,
cornering lamps, backup lamps and
hazard warning flashers. Have
headlamp aim checked immediately
if beams seem improperly aimed.
O: Glass, Mirrors, Lights and/or
Reflectors Condition :
Look for
broken, scratched, dirty or damaged
glass, mirrors, lamps or reflectors
that could reduce the view or
visibility, or cause injury. Replace,
clean or repair promptly.
P: Door Latches : Check that doors
close, latch and lock tightly. Check
for broken, damaged or missing
parts that might prevent tight
latching.
Q :Tilt Cab (Driving Position) : Be
sure the tilt lever is down and
locked.
R: Fluid Leaks : Check for fuel,
water, oil or other fluid leaks by
looking at the surface beneath the
vehicle after it has been parked for
a while. If you notice diesel fumes or
fluid at any time, have the cause
found and corrected at once.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
354 Index
Fuel (cont'd)Running out of Fuel . . . . . . . . . . . 212
Water in Fuel . . . . . . . . . . . . . . . . . 209
Fuel for Diesel Engines . . . . . . . . . 206
G
Gauges
Diesel Exhaust Fluid (DEF) . . . . . 73
Engine Coolant Temperature . . . 72
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Odometer . . . . . . . . . . . . . . . . . . . . . . . 71
Speedometer . . . . . . . . . . . . . . . . . . . 71
Tachometer . . . . . . . . . . . . . . . . . . . . . 72
Trip Odometer . . . . . . . . . . . . . . . . . . 71
Warning Lights and Indi-cators . . . . . . . . . . . . . . . . . . . . . . . . . 69
General Information Vehicle Care . . . . . . . . . . . . . . . . . . 218
Getting In and Out of the Ve-
hicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Glove Box . . . . . . . . . . . . . . . . . . . . . . . 55
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 344
H
Hazard Warning Flashers . . . . . . . . 94
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 254
Bulb Replacement . . . . . . . 254, 257 Headlamps (cont'd)
Daytime Running Lamps
(DRL) Indicator Light . . . . . . . . . . 82
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 93
High-Beam On Light . . . . . . . . . . . . 81
High/Low Beam Changer . . . . . . . 93
Heated Mirrors . . . . . . . . . . . . . . . . . . . 34
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 154
Heating . . . . . . . . . . . . . . . . . . . . . . . . . 115
High Idle System . . . . . . . . . . . . . . . 155
High-Beam On Light . . . . . . . . . . . . . 81
Hill and Mountain Roads . . . . . . . . 132
Hooks Shopping Bag . . . . . . . . . . . . . . . . . . 58
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
I
Idle Shutdown . . . . . . . . . . . . . . . . . . 155
Idle Shutdown Light . . . . . . . . . . . . . 81
Ignition Positions . . . . . . . . . . . . . . . 148
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 51
Information on Loading the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 58
Instrument Cluster . . . . . . . . . . . . . . . 70
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . . 55 Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North
America . . . . . . . . . . . . . . . . . . . . . . . 287
K
Keyless EntryRemote (RKE) System . . . . . . . . . 26
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
L
Lamps Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Cornering . . . . . . . . . . . . . . . . . . . . . . . 95
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Exterior Controls . . . . . . . . . . . . . . . . 92
Interior . . . . . . . . . . . . . . . . . . . . . . . . 264
License Plate . . . . . . . . . . . . . . . . . 263
Malfunction Indicator (Check
Engine) . . . . . . . . . . . . . . . . . . . . . . . 74
Roofmarker . . . . . . . . . . . . . . . . . . . 261
Sidemarker . . . . . . . . . . . . . . . . . . . 261
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 48
Lighter, Cigarette . . . . . . . . . . . . . . . . 67
Lighting Illumination Control . . . . . . . . . . . . . 95
Lights
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . . . 77

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Index 355
Lights (cont'd)Automatic Transmission
Fluid Temperature . . . . . . . . . . . . . 78
Battery Warning . . . . . . . . . . . . . . . . 73
Brake System Warning . . . . . . . . . 75
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . 74
Cruise Control . . . . . . . . . . . . . . . . . . 82
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 82
Diesel Exhaust Fluid (DEF) . . . . . 80
Engine Oil Level Indicator . . . . . . 80
Engine Oil Pressure . . . . . . . . . . . . 79
Engine Shutdown Warning . . . . . 80
Exhaust Brake . . . . . . . . . . . . . . . . . . 78
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 93
High-Beam On . . . . . . . . . . . . . . . . . . 81
High/Low Beam Changer . . . . . . . 93
Idle Shutdown . . . . . . . . . . . . . . . . . . 81
Overdrive Off . . . . . . . . . . . . . . . . . . . 79
Reduced Engine Power . . . . . . . . 81
Seat Belt Reminders . . . . . . . . . . . . 73
Service Transmission Warning . . . . . . . . . . . . . . . . . . . . . . . 78
Service Vehicle Soon . . . . . . . . . . . 74
Wait to Start . . . . . . . . . . . . . . . . . . . . 79
Loading the Vehicle . . . . . . . . . . . . . . 58 Locks
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Door . . . . . . . . . . . . . . . . . . . . . 33
M
Maintenance and CareAdditional . . . . . . . . . . . . . . . . . . . . . 323
Maintenance Schedule . . . . . . . . . 303 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 326
Malfunction Indicator Lamp . . . . . . 74
Messages Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 86
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Heated . . . . . . . . . . . . . . . . . . . . . . . . . 34
N
New Vehicle Break-In . . . . . . . . . . . 147
Noise Control System . . . . . . . . . . 250
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . 71Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 223
Pressure Light . . . . . . . . . . . . . . . . . . 79
Online Owner Center . . . . . . . . . . . 343
Operating Temperature . . . . . . . . . 153
Ordering Service Publications . . . . . . . . . . 347 Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Overdrive Off . . . . . . . . . . . . . . . . . . . 195
Overdrive Off Light . . . . . . . . . . . . . . 79
Overheating, Engine . . . . . . . . . . . . 237
Owner Checks and Services . . . . 317
P
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 200
Over Things That Burn . . . . . . . 157
Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Perchlorate Materials Re- quirements, California . . . . . . . . . 218
Port
USB . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 33
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . 67
Reduced Engine Light . . . . . . . . . . 81
Steering Fluid . . . . . . . . . . . . . . . . . 240
Windows . . . . . . . . . . . . . . . . . . . . . . . 35
Power Take-Off (PTO) . . . . . . . . . . 215
Pregnancy, Using Seat Belts . . . . 47
Privacy Vehicle Data Recording . . . . . . . 349

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Index 357
Storage Areas (cont'd)Information on Loading the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . 58
Instrument Panel . . . . . . . . . . . . . . . 55
Storage Compartments . . . . . . . . . . 54
Stuck Vehicle . . . . . . . . . . . . . . . . . . . 136
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 37
System Noise Control . . . . . . . . . . . . . . . . . 250
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . 72
TaillampsBulb Replacement . . . . . . . . . . . . 263
Temperature, Operating . . . . . . . . 153
Text Telephone (TTY) Users . . . . 343
Three-Point Seat Belt . . . . . . . . . . . . 45
Tires If a Tire Goes Flat . . . . . . . . . . . . 287
Pressure . . . . . . . . . . . . . . . . . . . . . . 284
Rotation . . . . . . . . . . . . . . . . . . . . . . 284
Tires and Wheels . . . . . . . . . . . . . . . 272
Towing Vehicle . . . . . . . . . . . . . . . . . . . . . . . 291
Trademarks and License Agreements . . . . . . . . . . . . . . . . . . . 114
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . 185
Fluid, Automatic . . . . . . . . . . . . . . 229 Transmission (cont'd)
Overdrive Off, Automatic . . . . . . 195
Service Warning Light . . . . . . . . . . 78
Trip Odometer . . . . . . . . . . . . . . . . . . . 71
Turn and Lane-Change
Signals . . . . . . . . . . . . . . . . . . . . . . . . . 94
Turn Signal Bulb Replacement . . . . . . . . . . . . 263
U
USB Port . . . . . . . . . . . . . . . . . . . . . . . 110
Using This Manual . . . . . . . . . . . . . . . . 3
V
VehicleControl . . . . . . . . . . . . . . . . . . . . . . . 122
Getting In and Out . . . . . . . . . . . . . . 29
Identification Number (VIN) . . . 330
Messages . . . . . . . . . . . . . . . . . . . . . . 86
Security . . . . . . . . . . . . . . . . . . . . . . . . 33
Service Soon Light . . . . . . . . . . . . . 74
Starting and Stopping . . . . . . . . . 149
Towing . . . . . . . . . . . . . . . . . . . . . . . . 291
Vehicle Care
Tire Pressure . . . . . . . . . . . . . . . . . 284
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 349
Ventilation, Air . . . . . . . . . . . . . . . . . . 118
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
W
Wait to Start Light . . . . . . . . . . . . . . . 79
Warning Brake System Light . . . . . . . . . . . . . 75
Caution and Danger . . . . . . . . . . . . . 3
Warning Buzzers . . . . . . . . . . . . . . . . 91
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . 69
Warnings Hazard Flashers . . . . . . . . . . . . . . . . 94
Washer Fluid . . . . . . . . . . . . . . . . . . . 241
Water in Fuel . . . . . . . . . . . . . . . . . . . 209
Wheels and Tires . . . . . . . . . . . . . . . 272
Windows Power . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Windshield Wiper/Washer . . . . . . . . . . . . . . . . . . 66
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 133
Winter Cover . . . . . . . . . . . . . . . . . . . 154
Wiper Blade Replacement . . . . . . 252