2018 CHEVROLET LOW CAB FORWARD power steering

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Service and Maintenance 317
Owner Checks and
Services
Before Driving
Proper care and driving is important
not only for extended service life of
your vehicle, but also for improved
fuel and oil economy. Drive carefully
and defensively. Be sure you know
how to use your truck and its
equipment before operating it.
Starting and Operating
Proper care and operation will not
only extend the service life of your
vehicle but also improve fuel
economy.
Check Around the Vehicle Before
Starting the Engine
Before pulling away, perform a
thorough safety check, making sure
there are no children or obstructions
around the vehicle.
Take off the chocks after confirming
that the parking brake is securely
applied. Sit behind the wheel, adjust
the seat position, and buckle up the
seat belt. The passengers are alsorequired to buckle up the seat belts.
Adjust the positions of the steering
wheel and mirrors. Lock the doors.
Turn the power of the dome light or
accessories OFF before starting the
engine.
Engine Conditions
Checking the Engine for
Startability and Abnormal Noises
1. Make sure the parking brake is securely engaged. Step firmly
on the brake pedal.
2. Make sure the selector lever is in "P" or "N" position.
For safety, firmly press the
brake pedal before starting the
engine.
3. Turn the engine control switch to start the engine.
Check that the engine starts
quickly with no abnormal
noises. Checking Condition of the Engine
at Low Speeds and during
Acceleration
1. Make sure the transmission is in the "P" or "N" position and
the parking brake is securely
engaged.
2. Turn the engine control switch to start the engine, and run it to
warm up.
3. Check that the engine is running at a speed within the
standard idle speed range.
During regeneration of the
diesel particulate filter (DPF),
the engine idle speed may
increase.
4. Drive the vehicle, making sure the accelerator pedal does not
stick when gradually
accelerating, the engine speed
rises smoothly and it does not
knock.

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
338 Technical Data
Fuel
Fuel tank capacity
*6113 L (30.0 qt/24.9 gal)
125 L (33.0 qt/27.5 gal)
Diesel Exhaust Fluid (DEF)
DEF tank capacity 16.0 L (4.23 gal)
Steering
Steering wheel free play 10 - 50 mm (0.39 - 1.97 in)
Power steering fluid capacity 1.5 L (1.6 qt)
Wheel
Wheel alignment Toe-in -2 to 2 mm (-0.08 to 0.08 in)
Camber 0°15’
Caster LH 2°50’, RH 3°40’
King pin 12°
Wheel hub bearing grease capacity 0.11 kg (0.24 lb)
Wheel stud nut torque : Front and rear 500 Y(50 kgf m/363 lb ft)
Disc Brakes
Model 4500HD 4500XD/5500HD/5500XD
Brake size (Diameter x
Thickness) 293 x 40 mm (11.54 x 1.57 in) 363 x 42 mm (14.29 x 1.65 in)

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Index 353
Diesel Exhaust Fluid (DEF)Warning Light . . . . . . . . . . . . . . . . . . 80
Diesel Particulate Filter . . . . . . . . . 161
Distracted Driving . . . . . . . . . . . . . . . 122
Dome Lamps . . . . . . . . . . . . . . . . . . . . 96
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Locks . . . . . . . . . . . . . . . . . . . . 33
Drive Belt Routing, Engine . . . . . . 341
Driver Behavior . . . . . . . . . . . . . . . . . 122
Driver Information Cen- ter (DIC) . . . . . . . . . . . . . . . . . . . . . . . 82
Driving Emergencies . . . . . . . . . . . . 137, 146
For Better Fuel Economy . . . . . . . 23
Hill and Mountain Roads . . . . . . 132
If the Vehicle is Stuck . . . . . . . . . 136
Wet Roads . . . . . . . . . . . . . . . . . . . 132
Winter . . . . . . . . . . . . . . . . . . . . . . . . 133
E
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 215
Electrical System Overload . . . . . . . . . . . . . . . . . . . . . 264
Emergencies . . . . . . . . . . . . . . 137, 146
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 231 Engine (cont'd)
Alarm and Automatic
Shutdown . . . . . . . . . . . . . . . . . . . 155
Check Light (Malfunction In-
dicator) . . . . . . . . . . . . . . . . . . . . . . . . 74
Checks Before Operating . . . . . 156
Compartment Overview . . . . . . . 222
Coolant . . . . . . . . . . . . . . . . . . . . . . . 231
Coolant Temperature Gauge . . . . 72
Cover . . . . . . . . . . . . . . . . . . . . . . . . . 222
Drive Belt Routing . . . . . . . . . . . . 341
Exhaust . . . . . . . . . . . . . . . . . . . . . . 159
Heater . . . . . . . . . . . . . . . . . . . . . . . . 154
High Idle System . . . . . . . . . . . . . 155
Oil Pressure Light . . . . . . . . . . . . . . 79
Overheating . . . . . . . . . . . . . . . . . . 237
Reduced Power Light . . . . . . . . . . . 81
Running While Parked . . . . . . . . 160
Shutdown Warning Light . . . . . . . . 80
Engine Oil Level Indicator Light . . . . . . . . . . . . 80
Engines Diesel Fuel . . . . . . . . . . . . . . . . . . . 206
Exhaust Brake . . . . . . . . . . . . . . . . . . 201
Exhaust Brake Light . . . . . . . . . . . . . 78
Exhaust Fluid Diesel . . . . . . . . . . . . . . . . . . . . . . . . 170
Extender, Seat Belt . . . . . . . . . . . . . . 49 Exterior Lamp Controls . . . . . . . . . . 92
F
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Filter, Engine Air Cleaner . . . . . . . . . . . 231
Fixed Mast Antenna . . . . . . . . . . . . 102
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . 93
Flashers, Hazard Warning . . . . . . . 94
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 287
Fluid Automatic Transmission . . . . . . 229
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 246
Diesel Exhaust . . . . . . . . . . . . . . . . . 24
Power Steering . . . . . . . . . . . . . . . 240
Washer . . . . . . . . . . . . . . . . . . . . . . . 241
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 348
Front Seat Position Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 38
Fuel Biodiesel . . . . . . . . . . . . . . . . . . . . . 207
Cold Weather Operation . . . . . . 209
Diesel Engines . . . . . . . . . . . . . . . 206
Economy Driving . . . . . . . . . . . . . . . 23
Filling the Tank . . . . . . . . . . . . . . . 213
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 72

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
356 Index
Proposition 65 Warning,California . . . . . . . . . . . . . . . . . 218, 287
R
Radio Frequency Statement . . . . 348
Radio Reception . . . . . . . . . . . . . . . . 101
Radios
AM-FM Radio . . . . . . . . . . . . . . . . . . . 97
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . 249
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 42
Rear Storage . . . . . . . . . . . . . . . . . . . . 57
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 326
Reduced Engine Power Light . . . . 81
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 344
Remote Keyless Entry (RKE)
System . . . . . . . . . . . . . . . . . . . . . . . . . 26
Replacement Parts Maintenance . . . . . . . . . . . . . . . . . . 328
Reporting Safety Defects
General Motors . . . . . . . . . . . . . . . 349
U.S. Government . . . . . . . . . . . . . 349
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 132
Roadside Assistance
Program . . . . . . . . . . . . . . . . . . . . . . . 344
Roofmarker Lamps . . . . . . . . . . . . . 261
Rotation, Tires . . . . . . . . . . . . . . . . . . 284 Routing, Engine Drive Belt . . . . . . 341
Running out of Fuel . . . . . . . . . . . . . 212
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . . . 160
S
Safety Defects ReportingGeneral Motors . . . . . . . . . . . . . . . 349
U.S. Government . . . . . . . . . . . . . 349
Safety System Check . . . . . . . . . . . . 49
Scheduling Appointments . . . . . . . 345
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 43 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Extender . . . . . . . . . . . . . . . . . . . . . . . . 49
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . 48
Reminders . . . . . . . . . . . . . . . . . . . . . . 73
Three-Point . . . . . . . . . . . . . . . . . . . . . 45
Use During Pregnancy . . . . . . . . . . 47
Seats Position, Front . . . . . . . . . . . . . . . . . . 38
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Security Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 33
Selector Lever . . . . . . . . . . . . . . . . . . 194
Service . . . . . . . . . . . . . . . . . . . . . . . . . 120 Accessories and Modifica-
tions . . . . . . . . . . . . . . . . . . . . . . . . 218
Climate Control System . . . . . . . .115
Doing Your Own Work . . . . . . . . 218 Service (cont'd)
Publications Ordering Infor-
mation . . . . . . . . . . . . . . . . . . . . . . 347
Scheduling Appointments . . . . . 345
Transmission Warning Light . . . . 78
Vehicle Soon Light . . . . . . . . . . . . . . 74
Shift Lock Control Function Check, Automatic Trans-
mission . . . . . . . . . . . . . . . . . . . . . . . . 251
Shopping Bag Hooks . . . . . . . . . . . . 58
Sidemarker Lamps . . . . . . . . . . . . . 261
Signals, Turn and Lane-- Change . . . . . . . . . . . . . . . . . . . . . . . . 94
Specifications and Capa-
cities . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Speedometer . . . . . . . . . . . . . . . . . . . . 71
Starting and Stopping the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . 149
Steering . . . . . . . . . . . . . . . . . . . . . . . . 131 Fluid, Power . . . . . . . . . . . . . . . . . . 240
Wheel Adjustment . . . . . . . . . . . . . . 65
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . . . 263
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Storage Areas Glove Box . . . . . . . . . . . . . . . . . . . . . . 55