2019 CHEVROLET LOW CAB FORWARD heater

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
In Brief 11
1. Air Flow Direction ControlLever. See Air Vents0134.
2. Combination Light Control Switch. See Exterior Lamp
Controls 092.
Cruise Control Set Switch/
Resume Switch. See Cruise
Control 0223.
3. Windshield Wiper and Windshield Washer Switch.
See Windshield Wiper/Washer
0 66.
Exhaust Brake Switch. See
Exhaust Brake 0222.
4. Heater and Manual Air Conditioner. See Climate
Control Systems 0131.
5. Radio with CD/USB/Bluetooth. See AM-FM Radio 097.
6. Small Article Storage Pocket. See Instrument Panel Storage
0 55.
7. Windshield Washer Fluid Tank. See Washer Fluid 0262.
8. Glove Compartment. See Glove Box 055. 9. Relay Box. See
Electrical
System Overload 0287.
10. Cupholders 056.
11. Hook. See Shopping Bag
Hooks 057.
12. Card Holder. See Instrument
Panel Storage 055.
13. Accessory Power Outlet. See Power Outlets 067.
14. Accessory Power Outlet. See Power Outlets 067.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
12 In Brief
Instrument Panel (Driver Side)
1. Instrument Panel Light LevelControl. See Instrument Panel
Illumination Control 095.
2. Power Take Off (PTO) Main Switch. See Power Take-Off
(PTO) 0237.
3. Power Take Off (PTO) Engine Speed Control Switch. See
Power Take-Off (PTO) 0237. 4. Rear Body Interior Light
Switch. See Cargo Lamp 096.
5. Instruments, Warning Lights and Indicator Lights. See
Instrument Cluster 069.
6. Horn Button. See Horn065. 7. Rear Power Window Lock
Switch. See Power Windows
0 35.
8. Outside Rearview Mirror Heater Switch. See Heated
Mirrors 034.
9. Cruise Control Main Switch. See Cruise Control 0223.
10. Hazard Warning Flasher Switch. See Hazard Warning
Flashers 094.
11. Rear Power Window Switch. SeePower Windows 035.
12. Diesel Particulate Filter (DPF) Switch. See Diesel Particulate
Filter 0180.
13. Odometer Check Switch. See Odometer 070.
Engine Oil Level Check Switch.
See Engine Oil 0245.
14. Door Lock Switch. See Power
Door Locks 033.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
In Brief 21
The windshield wiper switch has the
following positions, which
correspond to the states of the
wiper.
9:Stopped.
3:Intermittent, light rain.
Low Speed : Low speed,
moderate rain.
High Speed : High speed,
heavy rain.
Windshield Washer
Windshield washer fluid is sprayed
over the windshield when this switch
is pressed. At the same time, the
windshield wiper operates.
To spray washer fluid on the
windshield, push the button on the
end of the combination switch lever.
The spray will continue as long as
you hold in the button.
See Windshield Wiper/Washer 066.
Climate Controls
The heating, cooling, and ventilation
for the vehicle can be controlled
with this system.
Climate Control System w/Air
Conditioning shown, Heater Only
similar 1. Outlet Selector Knob
2. Air Selector Lever
3. Temperature Control Knob
4. Air Conditioning (A/C) Switch,
if equipped
5. Fan Speed Control Knob
See Climate Control Systems 0131.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
34 Keys, Doors, and Windows
{Warning
Before driving, be sure to adjust
the seat and mirrors to positions
that give you a correct driving
posture.
Do not adjust the outside mirrors
while operating the vehicle.
Adjust the mirrors when the
vehicle is stationary, not while the
vehicle is in motion.
When checking the rear of the
vehicle with mirrors, be careful
that this does not distract your
attention from the traffic ahead.
Outside mirrors may make the
vehicle behind you appear farther
away than it really is. Use these
mirrors very carefully until you are
able to correctly determine
distances from the images.(Continued)
Warning (Continued)
Keep the mirrors in mind when
passing another vehicle on a
narrow road, moving the vehicle
into a garage, or driving near
pedestrians.
Do not drive with the mirrors
folded.
You and others could be seriously
injured.
Heated Mirrors
If the outside rearview mirrors fog
up, press the outside rearview
mirror heater switch to defog them.
When the switch is pressed the
indicating light will illuminate. If the
switch is pressed once again, it will
switch to“OFF,”and the operation
indicating light will go out.
Do not use this switch while the
engine is shut down. Due to high
power consumption, the battery can
be discharged.
Turn off the switch as soon as
defogging is complete.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Climate Controls 131
Climate Controls
Climate Control Systems
Climate Control Systems . . . . . 131
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 134
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . 135
Service . . . . . . . . . . . . . . . . . . . . . . . 136
Climate Control
Systems
The heating, cooling, and ventilation
for the vehicle can be controlled
with this system.
Climate Control System w/Air
Conditioning shown, Heater Only similar
1. Outlet Selector Knob
2. Air Selector Lever
3. Temperature Control Knob
4. Air Conditioning (A/C) Switch, if equipped
5. Fan Speed Control Knob Outlet Selector Knob :
The Air
Selector Knob regulates air flow
from the upper, floor and defroster
outlets.
H: Air flows through the upper
outlets.
): Air flows through the upper and
floor outlets.
6: Air is flows through the floor
outlets.
-: Air flows through the floor
outlets, with some air coming from
the door window and windshield
outlets.
1: Air flows through the door
window and windshield outlets.
Air Selector Lever : The intake of
outside air and the circulation of
inside air is controlled by sliding this
lever right or left.
P: Use this position to ventilate
the interior of the cab. This position
should be normally selected.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
132 Climate Controls
O:Use this position to prevent
dusty or otherwise contaminated
outside air from entering the cab,
such as in a tunnel or in congested
traffic.
Extended use of the inside air
recirculation position causes the
windshield and windows to fog up
easily, making visibility poor. For
good ventilation, switch to outside
air as soon as possible.
Temperature Control Knob : Use
this knob to select the preferred cab
interior temperature. Turn the knob
counterclockwise to lower the outlet
air temperature and clockwise to
raise it.
Fan Speed Control Knob : The fan
speed can be adjusted to any of the
four speeds available.
Air Conditioning (A/C) Switch :
Press this switch to use the air
conditioning system. The indicator
light inside the switch will come on
to show that the air conditioning
system is in operation. The air
conditioning system can also be
used for dehumidifying while the heater is being used. To turn off the
air conditioning, push this switch in
again.
When the defrost mode is selected,
the air conditioner compressor will
be on.
Even if the A/C switch is turned on,
the air conditioning system will not
operate when the fan speed control
knob is placed in the stop position.
Make sure that the fan speed
control knob is in a position other
than the stop position.
Even in seasons when the air
conditioning system is not used,
occasionally operate the system for
a few minutes with the engine
running at a low speed in order to
keep the system's components
lubricated.
Ventilation
Outside Air Ventilation :
Press the
A/C switch to the off position. Turn
the outlet selector knob to the
preferred position. Move the air
selector lever to the
Pposition. Set the temperature control knob to
the desired position. Adjust the fan
speed control knob to the preferred
speed.
How to Use the Heater
Normal Heating :
Set the outlet
selector knob to the
6or-
position. Use the-position for
warming your feet while defogging
the windshield.
Set the air selector lever to the
P
position. Adjust the temperature
control knob and the fan speed
control knob to the desired
positions.
To dehumidify the cab interior while
heating, press the A/C switch to the
on position.
As the heater uses the heat from
the engine coolant, its heating effect
is weak when the engine coolant
temperature is low.
Maximum Heating : Turn the outlet
selector knob to the
6position, set
the air selector lever to the
O

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
138 Driving and Operating
Driving and
Operating
Driving Information
Driver Behavior . . . . . . . . . . . . . . . 139
Distracted Driving . . . . . . . . . . . . 139
Control of a Vehicle . . . . . . . . . . . 139
Braking . . . . . . . . . . . . . . . . . . . . . . . 143
Steering . . . . . . . . . . . . . . . . . . . . . . 149
Driving on Wet Roads . . . . . . . . 149
Hill and Mountain Roads . . . . . 150
Winter Driving . . . . . . . . . . . . . . . . 151
If the Vehicle Is Stuck . . . . . . . . 153
Emergencies(Troubleshooting) . . . . . . . . . . . 154
Emergencies (Disabled Vehicle) . . . . . . . . . . . . . . . . . . . . . 164
Starting and Operating
New Vehicle Break-In . . . . . . . . . 165
Pedals . . . . . . . . . . . . . . . . . . . . . . . . 166
Ignition Positions . . . . . . . . . . . . . 166
Starting and Stopping theVehicle . . . . . . . . . . . . . . . . . . . . . . 168
Operating Temperature . . . . . . . 171
Winter Cover . . . . . . . . . . . . . . . . . 172
Engine Heater . . . . . . . . . . . . . . . . 172 Engine Alarm and Automatic
Shutdown . . . . . . . . . . . . . . . . . . . 173
Idle Shutdown . . . . . . . . . . . . . . . . 174
High Idle System . . . . . . . . . . . . . 174
Engine Checks Before Operating . . . . . . . . . . . . . . . . . . . 175
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . 176
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 177
Running the Vehicle WhileParked . . . . . . . . . . . . . . . . . . . . . . 179
Diesel Particulate Filter
Diesel Particulate Filter . . . . . . . 180
Diesel Exhaust Fluid
Diesel Exhaust Fluid . . . . . . . . . . 189
Automatic Transmission
Automatic Transmission . . . . . . 205
Selector Lever . . . . . . . . . . . . . . . . 214
Overdrive Off . . . . . . . . . . . . . . . . . 215
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 216
Parking Brake . . . . . . . . . . . . . . . . 220
Exhaust Brake . . . . . . . . . . . . . . . . 222
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 223
Fuel
Fuel for Diesel Engines . . . . . . . 227
Biodiesel . . . . . . . . . . . . . . . . . . . . . 228
Cold Weather Operation . . . . . . 230
Water in Fuel . . . . . . . . . . . . . . . . . 231
Running Out of Fuel . . . . . . . . . . 233
Filling the Tank . . . . . . . . . . . . . . . 235
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . 236
Power Take-Off (PTO) . . . . . . . . 237

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
140 Driving and Operating
Warning (Continued)
If a warning light comes on or a
buzzer sounds while you are
driving, immediately stop the
vehicle in a safe place and
perform checks.
Slow down sufficiently when
approaching a curve. Applying the
brakes or sharply turning the
steering wheel while turning the
curve could cause the cargo to
shift, the tires to slip and the
vehicle to tip onto its side.
Avoid scraping the tire sidewalls
against curbstones or driving over
dips and protrusions in the road
surface. You could damage the
tires, resulting in a blowout or
flat tire.
You and others could be seriously
injured.
Pulling Away After Stopping
and Parking
Before pulling away, check that
there are no children or obstructions
around the vehicle and confirm that
it is safe to pull away.
If you cannot see the area behind
your vehicle well enough to confirm
it is safe to back up, get out of the
vehicle and check behind it.
Make it a habit to look around and
confirm that it is safe to pull away
after a temporary stop (at traffic
lights, for example).
If the Windshield Fogs Up
Use the heater to blow hot air on the
windshield or dehumidify the cabin
using the air conditioner and place
the outlet selector knob in the
5or
4position.
Place the air selector lever in the
outside air position.
Nighttime Visibility
If there is an old film on the
windshield, the lights of oncoming
traffic will be reflected in many directions, making it hard for you to
see ahead. Use glass cleaner to
clean the glass and the wiper
blades.
Worn wiper blades cannot wipe the
windshield clean and thus cannot
maintain visibility. When the wiper
blades become worn, replace them
with new ones.
Do Not Attach Accessories to
the Windshield or Windows
{Warning
Do not attach ornaments, films or
other accessories to the
windshield or windows. They
would impair visibility. Also, any
plastic suction cups used to
attach accessories could cause a
fire or a crash by acting as
lenses.
You and others could be seriously
injured.