2019 CHEVROLET LOW CAB FORWARD lights

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
320 Vehicle Care
The application of wax to rubber
component surfaces can result in
permanent whitening.
Wax must not be applied to the
windshield. Failure to observe this
precaution can result in irregular
reflection of light, impairing
your view.
Protecting Exterior Bright Metal
Parts
Bright metal parts should be
cleaned regularly to keep their
luster. Washing with water is all that
is usually needed.
Use special care with aluminum
trim. To avoid damaging protective
trim, never use auto or chrome
polish, steam or caustic soap to
clean aluminum. A coating of wax,
rubbed to a high polish, is
recommended for all bright metal
parts.
Weatherstrip Lubrication
All weatherstrips should be
periodically lubricated (minimum of
every 6 months) with a weatherstrip
lubricant. A thin film of weatherstriplubricant should be applied using a
clean cloth. Weatherstrip lubricant
application will lengthen
weatherstrip life, help sealing, and
assist in eliminating squeaks.
Windshield Care
Wax must not be applied to the
windshield. A layer of wax can
impair your view in rainy weather
and can also lead to rough
movements of the windshield wiper.
If engine oil or grease comes into
contact with the windshield, staining
or discoloration may result. It must
be immediately cleaned away.
If not fully cleaned by the windshield
wipers, the windshield should be
cleaned using glass cleaner. If your
windshield is not clear after using
the windshield washer, or if the
wiper blade chatters when running,
wax or other material may be on the
blade or windshield.
The windshield wipers on your truck
can be pulled out from the
windshield to provide easier access
for cleaning.
Clean the outside of the windshield
with a non-abrasive cleaner. Your
windshield is clean if beads do not
form when rinsing with water. Clean
the blade by wiping with a cloth
soaked in a solution of one-half
water and one-half methanol
alcohol. Then rinse the blade with
water.
The windshield wiper arms may be
swung out, away from the glass, to
provide easy access for cleaning.
Do not hang on to the roof marker
lights while cleaning the windshield
or damage may occur (resulting in
possible water leakage).
External Diesel Engine
Cleaning
The engine does not need periodic
cleaning, nor is it recommended.
If you insist on cleaning the engine,
clean it only when it is cold, never
when it is warm or hot, and never
when the engine is running.
Spraying or pouring water or other
fluids on your engine when it is
warm or hot, or when it is running,

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Service and Maintenance 341
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

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
342 Service and Maintenance
.Mounting condition of all
wheel nuts
6. Checks performed after the engine 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. (Continued)
Warning (Continued)
For proper pedal operation, it is
also essential to lay floor mats
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 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Service and Maintenance 347
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 0177).
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

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
376 Index
FuelBiodiesel . . . . . . . . . . . . . . . . . . . . . 228
Cold Weather Operation . . . . . . 230
Diesel Engines . . . . . . . . . . . . . . . 227
Economy Driving . . . . . . . . . . . . . . . 24
Filling the Tank . . . . . . . . . . . . . . . 235
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Running out of Fuel . . . . . . . . . . . 233
Water in Fuel . . . . . . . . . . . . . . . . . 231
Fuel for Diesel Engines . . . . . . . . . 227
G
Gauges
Diesel Exhaust Fluid (DEF) . . . . . 72
Engine Coolant Temperature . . . 72
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Odometer . . . . . . . . . . . . . . . . . . . . . . . 70
Speedometer . . . . . . . . . . . . . . . . . . . 70
Tachometer . . . . . . . . . . . . . . . . . . . . . 71
Trip Odometer . . . . . . . . . . . . . . . . . . 70
Warning Lights andIndicators . . . . . . . . . . . . . . . . . . . . . 68
General Information Vehicle Care . . . . . . . . . . . . . . . . . . 240
Getting In and Out of the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 29 Glove Box . . . . . . . . . . . . . . . . . . . . . . . 55
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 366
H
Hazard Warning Flashers . . . . . . . . 94
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 277
Bulb Replacement . . . . . . . 277, 280
Daytime Running Lamps(DRL) Indicator Light . . . . . . . . . . 81
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 93
High-Beam On Light . . . . . . . . . . . . 81
High/Low Beam Changer . . . . . . . 93
Heated Mirrors . . . . . . . . . . . . . . . . . . . 34
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 172
Heating . . . . . . . . . . . . . . . . . . . . . . . . . 131
High Idle System . . . . . . . . . . . . . . . 174
High-Beam On Light . . . . . . . . . . . . . 81
Hill and Mountain Roads . . . . . . . . 150
Hooks Shopping Bag . . . . . . . . . . . . . . . . . . 57
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
I
Idle Shutdown . . . . . . . . . . . . . . . . . . 174
Idle Shutdown Light . . . . . . . . . . . . . 80
Ignition Positions . . . . . . . . . . . . . . . 166
Information Publication Ordering . . . . . . . . . . 370
Information on Loading the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 58
Instrument Cluster . . . . . . . . . . . . . . . 69
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . . 55
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 311
K
Keyless EntryRemote (RKE) System . . . . . . . . . 26
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
L
Lamps
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Cornering . . . . . . . . . . . . . . . . . . . . . . . 95
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Exterior Controls . . . . . . . . . . . . . . . . 92
Interior . . . . . . . . . . . . . . . . . . . . . . . . 287

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Index 377
Lamps (cont'd)License Plate . . . . . . . . . . . . . . . . . 286
Malfunction Indicator (Check
Engine) . . . . . . . . . . . . . . . . . . . . . . . 73
Roofmarker . . . . . . . . . . . . . . . . . . . 284
Sidemarker . . . . . . . . . . . . . . . . . . . 284
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . 48
Lighting Illumination Control . . . . . . . . . . . . . 95
Lights Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . . . 76
Automatic Transmission Fluid Temperature . . . . . . . . . . . . . 78
Battery Warning . . . . . . . . . . . . . . . . 73
Brake System Warning . . . . . . . . . 74
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . 73
Cruise Control . . . . . . . . . . . . . . . . . . 82
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 81
Diesel Exhaust Fluid (DEF) . . . . . 80
Engine Oil Level Indicator . . . . . . 79
Engine Oil Pressure . . . . . . . . . . . . 79
Engine Shutdown Warning . . . . . 80
Exhaust Brake . . . . . . . . . . . . . . . . . . 77
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 93
High-Beam On . . . . . . . . . . . . . . . . . . 81 Lights (cont'd)
High/Low Beam Changer . . . . . . . 93
Idle Shutdown . . . . . . . . . . . . . . . . . . 80
Overdrive Off . . . . . . . . . . . . . . . . . . . 78
Reduced Engine Power . . . . . . . . 81
Seat Belt Reminders . . . . . . . . . . . . 72
Service Transmission
Warning . . . . . . . . . . . . . . . . . . . . . . . 77
Service Vehicle Soon . . . . . . . . . . . 74
Wait to Start . . . . . . . . . . . . . . . . . . . . 79
Loading the Vehicle . . . . . . . . . . . . . . 58
Locks Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Door . . . . . . . . . . . . . . . . . . . . . 33
M
Maintenance and CareAdditional . . . . . . . . . . . . . . . . . . . . . 346
Maintenance Schedule . . . . . . . . . 327
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 349
Malfunction Indicator Lamp . . . . . . 73
Messages Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 86
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Heated . . . . . . . . . . . . . . . . . . . . . . . . . 34
N
New Vehicle Break-In . . . . . . . . . . . 165
Noise Control System . . . . . . . . . . 272
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . 70Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 245
Pressure Light . . . . . . . . . . . . . . . . . . 79
Online Owner Center . . . . . . . . . . . 365
Operating Temperature . . . . . . . . . 171
Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Overdrive Off . . . . . . . . . . . . . . . . . . . 215
Overdrive Off Light . . . . . . . . . . . . . . 78
Overheating, Engine . . . . . . . . . . . . 259
Owner Checks and Services . . . . 340
P
Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 220
Over Things That Burn . . . . . . . 176
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Perchlorate Materials Requirements, California . . . . . . 240

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
380 Index
W
Wait to Start Light . . . . . . . . . . . . . . . 79
WarningBrake System Light . . . . . . . . . . . . . 74
Caution and Danger . . . . . . . . . . . . . 3
Warning Buzzers . . . . . . . . . . . . . . . . 91
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . . 68
Warnings Hazard Flashers . . . . . . . . . . . . . . . . 94
Washer Fluid . . . . . . . . . . . . . . . . . . . 262
Water in Fuel . . . . . . . . . . . . . . . . . . . 231
Wheels and Tires . . . . . . . . . . . . . . . 295
Windows Power . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Windshield Wiper/Washer . . . . . . . . . . . . . . . . . . 66
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 151
Winter Cover . . . . . . . . . . . . . . . . . . . 172
Wiper Blade Replacement . . . . . . 275