2017 CHEVROLET LOW CAB FORWARD fuel pressure

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Instruments and Controls 71
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . 72
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Windshield Wiper/Washer . . . . . . 73
Power Outlets . . . . . . . . . . . . . . . . . 74
Cigarette Lighter . . . . . . . . . . . . . . . 74
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . 75
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . 76
Instrument Cluster . . . . . . . . . . . . . 77
Speedometer . . . . . . . . . . . . . . . . . . 80
Odometer . . . . . . . . . . . . . . . . . . . . . . 80
Trip Odometer . . . . . . . . . . . . . . . . . 80
Tachometer . . . . . . . . . . . . . . . . . . . . 81
Fuel Gauge . . . . . . . . . . . . . . . . . . . . 81
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . 82
Diesel Exhaust Fluid (DEF) Gauge . . . . . . . . . . . . . . . . . . . . . . . . 83
Seat Belt Reminders . . . . . . . . . . . 83
Battery Warning Light . . . . . . . . . . 83
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . 84 Service Vehicle Soon Light . . . . 84
Brake System Warning Light
(Parking Brake Light) . . . . . . . . . 84
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . 87
Exhaust Brake Light . . . . . . . . . . . 88
Service Transmission Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 88
Automatic Transmission Fluid Temperature Warning Light . . . 88
Overdrive Off Light (Diesel Only) . . . . . . . . . . . . . . . . . 89
Wait-to-Start Light . . . . . . . . . . . . . 89
Engine Oil Pressure Light . . . . . . 89
Engine Oil Level Indicator Light . . . . . . . . . . . . . . . . . . . . . . . . . 90
Diesel Exhaust Fluid (DEF) Warning Light . . . . . . . . . . . . . . . . 90
Engine Shutdown Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 91
Reduced Engine Power Light . . . . . . . . . . . . . . . . . . . . . . . . . 91
High-Beam On Light . . . . . . . . . . . 92
Daytime Running Lamps (DRL) Indicator Light . . . . . . . . . . . . . . . . 92
Cruise Control Light . . . . . . . . . . . 92
Information Displays
Driver Information Center (DIC) (Diesel Only) . . . . . . . . . . . . . . . . . 93
Vehicle Messages
Vehicle Messages(Diesel Only) . . . . . . . . . . . . . . . . . 97
Warning Buzzers . . . . . . . . . . . . . 101

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
136 Driving and Operating
Warning (Continued)
exhaust pipe are extremely hot.
Be careful not to inadvertently
touch them when working near
them (for example, tilting the cab
or operating an attachment). You
and others could be seriously
injured.
Recommendations for Driving
in Hot Regions
The engine is more likely to
overheat in an environment where
the ambient temperature is high. To
prevent the engine from
overheating, pay attention to the
following points:
.If the engine does not contain
the appropriate concentration of
engine coolant, overheating is
likely to occur.
Refer to Engine Coolant 0263.
. Do not put well water, river water
or other hard water in the engine
cooling system. It would hasten
the formation of rust and scale. .
If foreign matter (insects, mud,
etc.) gets stuck in the radiator's
air passages, the cooling
system's performance will
deteriorate. Check the air
passages for clogging, and
remove any foreign matter using
water under low pressure.
Refer to Exterior Care 0334.
When Turning, the Rear
Wheels will Follow Tighter
Curves than the Front Wheels
Use the mirrors to confirm safety.
Sidewinds
If the vehicle catches a sidewind
and drifts sideways, firmly grip the
steering wheel, decelerate to a
speed that allows you to stay
completely in control, and make a
directional correction. The vehicle
may catch strong sidewinds in the
following situations:
.
Emerging from a tunnel
. Driving over a bridge
. Driving on an embankment
. Driving through a cutting .
Being overtaken by a large truck
or bus
. Overtaking a large truck or bus
Flat Tire
If a blowout or flat tire occurs while
you are driving, calmly grip the
steering wheel and gradually apply
the brakes to decelerate. (Hard
braking would be dangerous
because it could cause the steering
wheel to be pulled to one side.)
Stop the vehicle in a safe place, and
change the tire.
Hard Bump Under Vehicle
If the underside of the vehicle
receives a hard bump, stop in a safe
place where the vehicle will not
obstruct traffic and check for brake
fluid leakage, fuel leakage and
component damage. If any part of
the vehicle is damaged or broken,
promptly have the vehicle inspected
and repaired.
Highways
.Speeds on highways are higher
than those on regular roads, so
there is more danger. Also, a

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
152 Driving and Operating
SymptomCauseCorrective Action Reference
Engine does not
start Starter turns over
(Gasoline) No fuel
Make sure there are no
fuel leaks, and then
add fuel-
Fuel pump clogged
4-
Pressure regulator is
faulty
4-
Ignition system is faulty
4-
Engine control (electrical
system) is faulty
4-
Engine starts, but immediately stops Idling speed too low
4-
Fuel filter is clogged
(Diesel)
4-
Air cleaner is clogged
4-
Common rail system is
faulty
4-
Fuel pump is clogged
(Gasoline)
4-
Fuel system is faulty
4-
Engine control (electrical
system) is faulty
(Gasoline)
4-

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Driving and Operating 161
Emergencies (Disabled
Vehicle)
When the Vehicles
Breaks Down
When the Vehicle Stops While
Driving
The brake booster will no longer
operate, brake effectiveness will be
reduced. If the engine cannot be
started, promptly have the vehicle
inspected and repaired.
If the engine stopped because the
vehicle ran out of fuel while driving,
refueling alone will not be enough to
restart the engine. Bleed the fuel
system after refueling the vehicle.
When the Fuel Tank is Empty
SeeRunning Out of Fuel (Diesel)
0 238.
When the Engine Stalls and
Cannot Be Restarted
Move the selector lever to the "N"
position and push the vehicle to a
safe place.
{Warning
Vehicle operations will change, so
stop the vehicle in a safe place
with the following in mind.
The power steering system will
not work so the steering wheel
will be hard to turn. It will require
more strength than during normal
operation.
As the brake booster will no
longer be functional, brake
effectiveness will be greatly
reduced. Be sure to apply more
pressure than usual to the brake
pedal.
If the power assist steering
system goes out because the
engine has stopped or the assist
system has malfunctioned, the
vehicle can still be steered.
However, much greater effort is
needed, especially in sharp turns
or at low speeds.
You or others could be seriously
injured. When the Vehicle Breaks Down
During Driving
1. Use the hazard warning flasher any time to warn other drivers,
day or night, and pull the
vehicle immediately over to a
safe place that does not
impede traffic (shoulder). Place
the triangle reflectors to alert
other traffic to the presence of
your vehicle.
2. If the vehicle can be exited safely, have the other
passengers get out and wait in
a safe place.
3. If the vehicle can be exited safely, walk to a safe place and
take appropriate measures by
using the closest
telephone, etc.
See Hazard Warning Flashers
0 105.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Driving and Operating 165
Turn the key against spring
pressure to energize the starter.
When key is released, spring
pressure returns it to the ON
position. Release the key as soon
as the engine has started.
If the key cannot be turned from the
LOCK position to the ON position,
lightly move the steering wheel
clockwise and counterclockwise
while trying to turn the key.
Starting and Stopping the
Vehicle (Gasoline Only)
Check around the Vehicle before
Starting the Engine
Proper care and operation will not
only extend the service life of your
vehicle but also improve fuel
economy.
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 also
required 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. See
Seat Position 044,
Seat Belts 049, Steering Wheel
Adjustment 072, and Mirrors039.
Keep the Floor Around the
Driver's 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
properly. Incorrectly installed floor
mats would hinder free movement
of the pedals. (Continued)
Warning (Continued)
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.
Checks Before Operating
Allow the engine to warm up before
driving. While the engine is warming
up, the following checks should
be made: 1. Observe the engine oil pressure warning light. The
light should go out when the

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Driving and Operating 231
For 3500 models, if the cruise
control is turned back on while the
vehicle speed exceeds what is set
prior to the cancellation of cruise
control, the set vehicle speed
cannot be changed until the vehicle
reaches to the set speed. Also, the
vehicle speed must be 1 MPH
below the previously set vehicle
speed.
For 4500 models, if you hold the
switch at the +RES position, the
vehicle will keep going faster until
you release the switch or apply the
brake. So unless you want to go
faster, do not hold the switch at the
+RES position.Driver Assistance
Systems
Speed Limiter (Gasoline
Vehicle)
Speed limiting restricts the vehicle's
speed by controlling the fuel
injection volume. It prevents the
speed from exceeding 105 km/h
(65 mph) regardless of the pressure
on the accelerator pedal.
Speed limiting does not control
braking, so it is possible for the
vehicle to exceed the set speed on
downhill slopes. If the tire size is
changed, the speed limiting may not
work normally. Be sure to use the
correct tire size specified for your
vehicle.
SeeCruise Control (Diesel) 0224 or
Cruise Control (Gas) 0227.
Fuel
Fuel (Gasoline)
Regular unleaded gasoline with a
posted octane rating of 87 or higher
should be used. It should meet
ASTMD4814 in the U.S. and CGSB
3.5-M87 in Canada. These fuels
should contain the proper additives
and in most cases nothing should
have to be added to the fuel. Pumps
in the U.S. and Canada will be
labeled UNLEADED. Only unleaded
nozzles will fit into this vehicle's
filler neck.
Gasoline with a posted octane
rating of less than 87 should not be
used in this vehicle. Using such
gasoline may cause a heavy
knocking noise when driving, which
can result in damage to the engine.
It is normal to hear a slight pinging
noise while accelerating or driving
up a hill. However, if a constant
knocking noise is heard while using
fuel rated at 87 octane or higher, the
engine should be serviced.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Driving and Operating 241
Type B
After refueling, make sure that the
fuel tank filler cap is tightly closed.
Do not use any fuel tank filler cap
that is not a genuine GM part.
The use of an improper fuel tank
filler cap could cause fuel spillage in
the event of an accident. The use of
an improper fuel tank filler cap could
also affect the fuel system and the
emission control system.
Be sure to wipe off the fuel that is
spilled at refueling.
{Warning
Fuel may be under pressure. Be
sure to slowly open the fuel tank
filler cap. If you open it quickly,
fuel may spurt out. You and
others could be seriously injured.
Caution
Care must be taken when filling
the fuel tank to prevent entry of
dirt and water.
Conversions and
Add-Ons
Add-On Electrical
Equipment
Installing Electrical Equipment
{Warning
Inappropriate installation or
removal of audio, radio or other
electrical equipment can
adversely affect other electrical
equipment and cause a
breakdown or fire. Be sure to
have electrical equipment
installed or removed by your
dealer. You and others could be
seriously injured.
Do not install any unauthorized
radio set, or any radio set or
antenna that does not comply with
relevant standards. Noise from the
radio set could cause
electromagnetic interference with
the vehicle's electronic equipment

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
244 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 245
California Proposition65 Warning . . . . . . . . . . . . . . . . . 245
California Perchlorate Materials Requirements . . . . . 245
Accessories and Modifications . . . . . . . . . . . . . . . . 245
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 245
Cab Tilting . . . . . . . . . . . . . . . . . . . . 247
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 249
Engine Cover . . . . . . . . . . . . . . . . . 250
Engine Oil (Diesel) . . . . . . . . . . . 251
Engine Oil (Gasoline) . . . . . . . . . 257
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 260
Engine Air Cleaner/Filter . . . . . . 263
Engine Coolant . . . . . . . . . . . . . . . 263
Engine Overheating . . . . . . . . . . 269
Power Steering Fluid . . . . . . . . . 273
Washer Fluid . . . . . . . . . . . . . . . . . 274
Brakes . . . . . . . . . . . . . . . . . . . . . . . 275
Brake Fluid . . . . . . . . . . . . . . . . . . . 280
Battery . . . . . . . . . . . . . . . . . . . . . . . . 281 Fuel Filter . . . . . . . . . . . . . . . . . . . . 282
Rear Axle (Gear Oil Viscosity
Chart) . . . . . . . . . . . . . . . . . . . . . . . 283
Rear Axle (Oil Level Check) . . . . . . . . . . . . . . . . . . . . . . 283
Noise Control System . . . . . . . . 284
Automatic Transmission Shift Lock Control Function Check
(Diesel Only) . . . . . . . . . . . . . . . . 285
Wiper Blade Replacement . . . . 286
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 288
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 288
Headlamps and Front Turn Signal . . . . . . . . . . . . . . . . . . . . . . . 291
Roofmarker Lamps . . . . . . . . . . . 295
Sidemarker Lamps (Including Turn Signal and Cornering
Lamps) . . . . . . . . . . . . . . . . . . . . . . 295
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 297
License Plate Lamp . . . . . . . . . . 297
Interior Lamps . . . . . . . . . . . . . . . . 298
Electrical System
Electrical System Overload . . . 298
Wheels and Tires
Wheels and Tires . . . . . . . . . . . . . 308
Tire Pressure . . . . . . . . . . . . . . . . . 322
Tire Rotation . . . . . . . . . . . . . . . . . 323
If a Tire Goes Flat . . . . . . . . . . . . 326
Jump Starting
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . 326
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . 332
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . 334
Interior Care . . . . . . . . . . . . . . . . . . 340