tire pressure CHEVROLET LOW CAB FORWARD 2018 Owner's Guide

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
316 Service and Maintenance
33. Leaf Spring U-bolt Torque :
Tighten the U-Bolt nuts to the
specified torque after the first
1 040 km (650 miles), thereafter
every 16 000 km (10,000 miles).Model Leaf spring U-bolt nut tightening torque
Front Rear
4500HD 127 Y
(94 lb·ft) 177
Y
(131 lb·ft)
4500XD 196 Y
(145lb·ft) 177
Y
(131 lb·ft)
5500HD, 5500XD 196
Y
(145lb·ft) 284
Y
(209 lb·ft)
34. Wheel Nut Torque : Check tires
for excessive or abnormal wear,
or damage. Also check tire inflation
pressures and adjust.
Be sure wheels are not bent or
cracked and that wheel nuts have
been tightened to the specified
torque after the first 1,040 km
(650 miles) and then every
10 400 km (6,500 miles). Note that
there are left and right hand
threads. Wheel nut tightening torque
500Y(362 lb·ft)
35. King Pin : Lubricate the grease
fitting on the king pins every
12 months or 16 000 km
(10,000 miles) whichever occurs
first.
36. Wheel Hub Bearing Grease :
Clean and repack front wheel
bearings every 24 months or
48 000 km (30,000 miles) whichever
occurs first.
37. Air Conditioner Blower
Filter : The air conditioner blower
filter should be removed and
cleaned once a month.
38. Exhaust Injector : Clean the
exhaust injector every 176,000 km
(110,000 miles).
39. DEF Supply Pump Filter
Element : Replace the DEF supply
pump filter element every
192 000 km (120,000 miles) or
24 months whichever occurs first. 40. Starter :
The color displayed by
the starter indicator light will change
from green to amber when the
number of times remaining is 0 or
below and the screen is selected.
When the indicator light (amber)
comes on, have the vehicle
inspected/serviced at the nearest
dealer.

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 323
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), 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 0200 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 0317).
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

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 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