change time CHEVROLET LOW CAB FORWARD 2019 Owner's Guide

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Service and Maintenance 329
.Frequent short trips of less than
16 kilometers (10 miles) in sub-
freezing temperatures
. Frequent and extended low-
speed engine operation (door-
to- door deliveries, stop- and- go
traffic, etc.)
. Driving on unpaved roads with
heavy dust
. Towing a trailer
Power Take Off (PTO) and
Extended Idle Use
When the vehicle is used with the
PTO equipment or used in a way
that requires extended idle time,
one hour of use shall be deemed
the same as 33 miles. See Driver
Information Center (DIC) 082 for
hourmeter.
Preventive Maintenance
As any mechanical device operates,
a certain amount of wear occurs.
The amount of wear depends on
certain variables –type and method
of operation and the schedule of
maintenance. These variables may be emphasized as critical to
malfunction but each is dependent
upon the other. For example, if a
vehicle is repeatedly overloaded,
driven at excessive speed or
improperly shifted, no schedule of
maintenance can prevent
malfunction. Also, if a preventive
maintenance schedule is not
followed, or is improperly carried
out, no amount of correct vehicle
operation will prevent malfunction.
If vehicle application, operation and
preventive maintenance schedules
and procedures are followed and
properly carried out, the life of the
vehicle will be greatly extended.
For example, regular attention to the
engine oil is essential. The oil level
must be periodically checked and oil
added whenever needed. Also, the
oil should be changed at the
intervals specified with the proper
quality and viscosity of oil. If your
engine should run excessively low
on oil or if the oil has lost its
lubricating qualities because of old
age, serious engine damage could
occur.
Maintenance Schedule Table
Letters Used to Indicate
Maintenance Service Types
I :
Inspect then clean, repair or
replace as necessary
A : Adjust
R : Replace
T : Tighten to the specified torque
L : Lubricate
C : Clean

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Service and Maintenance 339
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.
41. Wiper Blades : Inspect wiper
blades for wear, cracking,
or contamination. Clean the
windshield and wiper blades,
if contaminated, replace wiper
blades that are worn or damaged,
or at least once a year. See Wiper
Blade Replacement 0275.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Customer Information 367
Roadside Assistance
Program
Call 1-888-899-1327. (Text
Telephone (TTY): 1-888-889-2438.)
Service is available 24 hours a day,
365 days a year.
Calling for Assistance
When calling Roadside Assistance,
have the following information
ready:
.Your name, home address, and
home telephone number.
. Telephone number of your
location.
. Location of the vehicle.
. Model, year, color, and license
plate number of the vehicle.
. Odometer reading, Vehicle
Identification Number (VIN), and
delivery date of the vehicle.
. Description of the problem.
Coverage
Services are provided for the
duration of the vehicle’s powertrain
warranty.
Anyone driving the vehicle is
covered.
Roadside Assistance is not a part of
the New Vehicle Limited Warranty.
General Motors North America and
Chevrolet reserve the right to make
any changes or discontinue the
Roadside Assistance program at
any time without notification.
General Motors North America and
Chevrolet reserve the right to limit
services or payment to an owner or
driver if they decide the claims are
made too often, or the same type of
claim is made many times.
Services Provided
.Emergency Tow from a Public
Road or Highway: Tow to the
nearest Chevrolet dealer for
warranty service, or if the vehicle
was in a crash and cannot be driven. Assistance is not given
when the vehicle is stuck in the
sand, mud, or snow.
Services Not Included in
Roadside Assistance
.
Impound towing caused by
violation of any laws.
. Legal fines.
. Mounting, dismounting,
or changing of snow tires,
chains, or other traction devices.
Service is not provided if a vehicle
is in an area that is not accessible
to the service vehicle or is not a
regularly traveled or maintained
public road, which includes ice and
winter roads. Off-road use is not
covered.
Scheduling Service
Appointments
When the vehicle requires warranty
service, contact your dealer and
request an appointment. By
scheduling a service appointment
and advising the service consultant

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