oil change CHEVROLET LOW CAB FORWARD 2017 Owner's Guide

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Vehicle Care 265
Warning (Continued)
eyes are still irritated or otherwise
feel abnormal, seek immediate
medical attention.
If the engine coolant gets on your
skin, rinse it off using a soap with
a large amount of water. Also,
if abnormality is seen, seek
medical attention.
Engine coolant is flammable, and
therefore, it must be kept away
from flames and other heat
sources. Engine coolant also
could ignite if it comes in contact
with a hot surface, such as the
exhaust manifold. Exercise
caution to prevent this from
happening.
You and others could be seriously
injured.
Preparing Engine Coolant
To prevent engine damage due to
freezing of the engine coolant and
to protect the cooling system from
corrosion, use a mixture of the recommended type antifreeze and
water. If the engine of the vehicle is
at
−30 °C (−22 °F) or above, the
coolant concentration should be
50%. Direct use of “50/50
Pre-diluted” product which is already
diluted to 50% concentration is
recommended. If the outside
temperature engine or vehicle is
used at −30 °C (−22 °F) or below,
coolant concentration of 55% is
recommended.
It is the owner ’s responsibility to:
. Maintain the engine cooling
system freeze protection at or
above −30 °C (−22 °F) (at or
below −30 °C (−22 °F) in colder
climates to ensure protection
against corrosion and loss of
engine coolant from boiling.
A 50/50 (55/45 for colder
climates) mixture of the
recommended type antifreeze
and water will provide freeze
protection to at or above −30 °C
(−22 °F), (at or below −30 °C
(−22 °F) in colder climates) and
boil protection to 128 °C
(262 °F). Periodic replacement
of engine coolant is needed to replenish the anticorrosion
additives that wear out with use.
Engine coolant that has become
dark in color shows that it needs
to be changed.
. Use only the recommended
coolant. See Recommended
Fluids and Lubricants 0378.
. Do not use methanol-base
antifreeze, alcohol or plain water
alone in your vehicle at any time.
They will boil at a lower point
than that at which the engine
coolant temperature gauge will
warn of overheating, and they do
not provide proper protection
against corrosion.
Engine Coolant Quantity
For the quantity of engine coolant,
see Capacities and Specifications
0 389. After changing the engine
coolant, check that the engine
coolant is up to the specified level.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
272 Vehicle Care
4. If no steam or engine coolantcan be seen or heard from the
engine compartment:
.Tilt the cab or open the
engine access cover.
‐If the engine coolant is
boiling, wait until it stops
before proceeding.
‐ Look at the see-through
reserve tank. The
engine coolant level
should be between the
"MAX" and "MIN" lines
on the reserve tank.
‐ If necessary, pour
engine coolant (See
Engine Coolant 0263
for the proper coolant
and water mixture) into
the reserve tank only,
not directly into the
radiator. Also, do not
check engine coolant
level at the radiator.
. Make sure the fan belts are
not broken, or off the
pulleys, and that the fan
turns when the engine is started. Make sure the fan
blade and pulleys are not
broken.
. Diesel engine only, check
the radiator hoses and
connections, heater hoses
and connections, radiator,
water pump, EGR cooler,
and SCR system and hoses
for leakage.
. Gasoline engine only, if the
engine coolant level in the
reserve tank is low, look for
leaks at the radiator hoses
and connections, heater
hoses and connections,
radiator, and water pump.
If the engine coolant level in
the reserve tank is at the
correct level but there is still
an indication on the
instrument panel of an
overheat condition:
You must let the engine
cool first. You may then add
engine coolant directly to
the radiator. See "Adding
Engine Coolant" under
Engine Coolant 0263. 5. Inspect to see if there is any
dirt, etc. attached to the front
surface of the radiator. Also,
inspect to see if there is
anything blocking the core.
If there is anything attached,
clean and remove it.
6. After the inspection, regardless of the vehicle condition, please
contact the nearest dealer.
Once the engine coolant
temperature gauge no longer
signals an overheat condition, you
can resume driving at a reduced
speed. Return to normal driving
after about 10 minutes if the gauge
pointer does not again show an
overheat condition.
When tap water only has been used
for engine coolant in an emergency,
change the engine coolant as soon
as possible.
Engine damage may be caused if
an overheating engine is suddenly
refilled with water. Instead, refill
slowly.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Vehicle Care 273
Power Steering Fluid
The power steering fluid level must
be checked and it must be changed
according to the Maintenance
Schedule. SeeMaintenance
Schedule 0345.
When replenishing power steering
fluid or flushing the power steering
system, always use ATF
(Dexron
®-VI). Failure to use the
proper fluid may damage the power
steering system seals and hoses,
leading to fluid leakage.
Checking the Power Steering
Fluid Level
For the 3.0L diesel vehicles, the
fluid level is correct if it is between
the “MAX” and“MIN” lines on the
reserve tank. If the level is lower
that the “MIN”line, add fluid up to
the “MAX” line.
For the 5.2L diesel vehicles, the
fluid level is correct if it is between
the“MAX” and“MIN” lines on the
reserve tank. If the level is lower
that the “MIN”line, add fluid up to
the “MAX” line.
The reserve tank is located at the
rear of the engine compartment on
the right. When you have finished
checking the fluid level, securely
install the cap and cover.
For single cab gasoline vehicles, the
fluid level is correct if it is between
the "MAX" and "MIN" lines on the oil
dipstick. If the level is lower than the
"MIN" line, add fluid up to the
"MAX" line.
The reserve tank is located at the
front left side of the engine.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Vehicle Care 277
Another characteristic of the HBB
system is that the brake pedal may
be depressed easily to the floor with
the vehicle at a stop. This is not a
sign of malfunction.
When the engine is running, the
system automatically charges the
accumulator whenever pressure has
been reduced after braking. Auto
charge may be activated without
braking, depending on temperature
changes in the accumulator. During
auto charge, a hissing and clicking
sound can be heard. This is not a
malfunction.
With the engine running, a booming
sound can be heard during hard
braking. This comes from the
brake-fluid pump. It is not a
malfunction.
Applying continuous hard braking
for a long time will lead to
considerable temperature rise in the
HBB pump. Such overworking of the
brakes is best avoided.Vacuum or hydraulic power
assisted brakes
If the engine stops, do not pump the
brakes. The system is designed to
stop the vehicle with reserve power
assist if the brake pedal is held
down. This reserve is greatly
reduced each time you apply and
release the brakes. If, when you
turn the steering wheel during
braking, the vehicle does not turn,
release some pressure from the
brake pedal.
In a Vehicle Equipped with a HBB,
Do Not Keep the Brake Pedal
Depressed for an Extended Period
Caution
Failure to follow the above
instruction will cause the oil inside
the HBB oil pump to get very hot.
This could damage the HBB tank
and deteriorate seals and also
could cause damage to the HBB
oil pump, HBB unit and/or HBB
hosing. Eventual leakage of HBB
(Continued)
Caution (Continued)
oil, sudden increase in brake
pedal resistance and fire could
unexpectedly result in an
accident.
Hydraulic Brake Booster (HBB)
Fluid (5500HD/5500XD Series)
The HBB system has been
designed to use ATF Dexron fluid is
used with this system, rubber
components may be damaged, oil
may leak and the system may
malfunction. It is important to
remember that the fluid used in the
hydro-booster is completely different
in characteristics from the brake
fluid used in the master and wheel
cylinders.
If hydro-booster fluid and brake fluid
from the master cylinder are
mistakenly mixed together and
used, rubber components will
deteriorate as a result of insufficient
lubrication. Any resultant oil leakage
or system malfunction can in turn
lead to dragging brakes or other

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Vehicle Care 283
Rear Axle (Gear Oil Viscosity Chart)
Gear Oil Viscosity Chart
Select appropriate gear oil in accordance with the table below. It is important
to select the viscosity appropriate for the temperature at which your vehicle
operates. Use the following table for making correct selections.
Rear Axle (Oil Level
Check)
Rear Axle Differential Gear Oil
The rear axle differential gear oil
level must be checked for its level
and it must be changed according to
the Maintenance Schedule.
Use the oil quantities indicated later
in this section only as guidelines
when changing the rear axle
differential gear oil.
After changing the oil, ensure that it
is at the correct level.
Drained oil must be disposed of in a
method conforming to the regulatory
requirements in your state.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
336 Vehicle Care
floor. Do not apply water from a
high-pressure washer nozzle
directly to the electric connectors.
Failure to observe this precaution
can lead to faulty operation of the
electrical system. If an automatic
car or truck-wash is used with
vehicles having dark or metallic
coating, the painted surfaces can be
damaged by the brushes, lose their
luster or be very noticeably
scratched.
Do not direct a large amount of
water at the air inlet openings. Do
not apply water to the engine
compartment or at electrical
components. Failure to observe this
precaution can lead to a poorly
starting and operating engine and
problems in the electrical system.
Ensure that mirrors and the antenna
are retracted before washing the
vehicle.
If an automatic car or truck-wash
must be used, avoid a
high-temperature, high pressure
type machine. Failure to observe
this precaution can lead to heat
deformation and breakage of plastic
components, or to water leaks intothe cab. When using an automatic
car or truck-wash, ensure that a
distance of at least 0.4 m
(15.75 inches) is maintained
between the nozzle and the vehicle,
and when washing door windows,
that the spray is perpendicular to
the surface of the glass.
Ensure that all detergent is fully
washed and wiped away.
Particularly in the case of strong
alkaline detergents (typically those
for industrial uses), there is a
danger that hairline cracks can
develop in lighting-cluster lenses if
the vehicle is operated without
detergent being fully wiped away.
Always read the detergent
manufacturer's instructions carefully
before use. Airborne dirt that
adheres to plastic front bumpers as
a result of rain, for example, can be
difficult to remove. In such a case,
use a commercially-available
cleaner to clean away the dirt, and
then apply a wax for use with plastic
components.Vehicle Storage
In order to maintain your vehicle's
attractive appearance as long as
possible, special consideration must
be given to its storage location.
If the vehicle is stored or kept for an
extended period of time in any of
the following locations, a chemical
change may occur in the paint work,
resulting in staining, discoloration,
rusting, and corrosion of
components.
.
Locations where a large amount
of oily matter, soot, heavy smoke
or metal powder can adhere to
the vehicle.
. Areas around pharmaceutical
plants and other facilities that
discharge chemical matter.
. Coastal areas
. Locations where a large amount
of dead bugs, bird droppings or
tree sap can adhere to the
vehicle.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
342 Vehicle Care
Dust and loose dirt that collect on
interior fabric should be removed
often with a vacuum cleaner or soft
bristle brush. Wipe vinyl or leather
trim regularly with a clean, damp
cloth. Normal trim soils, spots or
stains can be cleaned with these
cleaners.
Remember these basic steps before
cleaning:
.Remove stains as quickly as
possible before they
become "set".
. Use a clean cloth or sponge,
and change to a clean area
often. A soft brush maybe used
if stains persist.
. Use solvent-type cleaners only
in a well ventilated area: also, do
not saturate the stained area.
. If a ring forms after spot
cleaning, clean the entire area
immediately.
. Follow specific instructions on
cleaner labels.General Cleaning of Soiled or
Water Spotted Fabric Type
Trim with Foam Type Cleaner
Vacuum the area thoroughly to
remove any loose dirt.
Always clean a whole trim panel or
section. Mask surrounding trim
along stitch or welt lines.
Use suds on a clean sponge. Do
not brush wet suede. Do not
saturate the material or rub it
harshly. Immediately after cleaning,
remove suds with a sponge and
rinse with a clean wet sponge. Wipe
off remaining residue with a slightly
damp absorbent towel or cloth.
Important —Immediately after
wiping, force-dry the fabric with an
air hose. A heat dryer or heat lamp
may be used. Use caution with a
heat dryer or lamp to help prevent
damage.
When trim materials with a sheen or
luster finish are dry, wipe the fabric
lightly with a soft, dry, clean cloth to
restore its sheen or luster. For suede, raise nap with dry scrub
brush and vacuum to remove any
final traces of residue.Spot Cleaning Fabric Type
Trim with Solvent Type Cleaner
Before trying to remove a spot or
stain from fabric, try to find out the
type and age of the spot or stain.
Some spots or stains can be
removed with water or a mild soap
solution. Spots or stains should
always be removed as soon as
possible.
Some types of stains or soilage,
such as lipstick, inks and grease,
are very difficult (sometimes
impossible) to remove completely.
When cleaning this type of stain or
soilage, be sure not to enlarge the
soiled area.
.
Gently scrape excess stain from
the trim material with a clean,
dull knife or scraper. Use very
little cleaner, light pressure, and
clean cloths (preferably
cheesecloth). Cleaning should
start at the outside of the stain

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Service and Maintenance 347
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.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
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Service and Maintenance 351
Remarks
(1)In case this column is blank,
follow kilometers (miles).
(2) An Emission Control Service.
(3) Initial check at 1 040 km
(650 miles) is required.
(4) See Severe Driving Condition.
(5) A Noise Emission Control
Service.
(6) The California Air Resources
Board has determined that the
failure to perform this maintenance
item will not nullify the emission
warranty or limit recall liability prior
to the completion of vehicle useful
life. GM, however, urges that all
recommended maintenance
services be performed at the
indicated intervals.
Explanation of Complete
Vehicle Maintenance Schedule
(Gasoline Vehicles)
The following is a brief explanation
of each of the services listed in the
preceding Complete Vehicle
Maintenance Schedule for gasoline
vehicles. 1. ENGINE OIL :
Change at
intervals noted below depending
upon driving conditions.
• NORMAL SERVICE - Change
every 12 000 km (7,500 miles) or
12 months whichever occurs first.
• SEVERE SERVICE- Change every
4 800 km (3,000 miles) or 3 months
if you often drive under one or more
of these conditions (a) driving in
dusty areas, (b) frequent idling or
idling for long periods, (c) driving
6 km (4 miles) or less in freezing
weather, or other short trips in cold
weather, where the engine does not
thoroughly warm up. Change oil and
filter as soon as you can after
driving in a dust storm.
2. OIL FILTER : Change at intervals
noted below depending upon driving
conditions.
• NORMAL SERVICE - Change
every 12 000 km (7,500 miles) or
12 months whichever occurs first.
• SEVERE SERVICE- Change every
4 800 km (3,000 miles) or 3 months
whichever occurs first. 3. COOLING SYSTEM SERVICE :
At 24 months or 48 000 km
(30,000 miles) intervals, wash
radiator cap and filler neck with
clean water, pressure test system
and radiator cap for proper pressure
holding capacity, tighten hose
clamps and inspect condition of all
cooling and heater hoses. Replace
hoses if cracked, swollen or
otherwise deteriorated.
Also each 24 months or 48 000 km
(30,000 miles), clean exterior of
radiator core.
4. ENGINE COOLANT :
Every
80 000 km (50,000 miles), drain the
engine coolant by opening the drain
plug at the bottom of the radiator
core, flush and refill the engine
cooling system with a new 50/50
engine coolant solution.
5. AIR CLEANER FILTER : Change
every 48 000 km (30,000 miles).
6. POSITIVE CRANKCASE
VENTILATION (PCV) SYSTEM :
Check that PCV system works
properly. Replace the valve and any
worn, plugged or collapsed hoses
as necessary.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
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352 Service and Maintenance
7. SPARK PLUGS :Change every
160 000 km (100,000 miles).
8. SPARK PLUG WIRES : Clean
wires and inspect for burns, cracks
or other damage. Check the wire
boot fit at the coilpack and at the
spark plugs. And replace every
160 000 km (100,000 miles).
9. FUEL TANK, CAP AND LINES :
Inspect the fuel tank, cap and lines
for damage or leaks. Remove fuel
cap, inspect gasket for an even filler
neck imprint, and any damage.
Replace parts as needed.
10. ENGINE ACCESSORY DRIVE
BELT(S) : Inspect belts. Look for
cracks, fraying, wear, and proper
tension. Adjust or replace as
needed, and change every
160 000 km (100,000 miles).
11. EVAPORATIVE CONTROL
SYSTEM (ECS) : Visually check all
fuel and vapor lines and hoses for
proper hookup, routing, and
condition. Check that bowl vent and
purge valves work properly,
if equipped. Replace as needed. 12. SHIELDS AND UNDER HOOD
INSULATION :
Inspect shields and
under hood insulation for damage or
looseness. Adjust or replace as
required.
13. AIR INTAKE SYSTEM : Check
the air intake system installation to
see that gaskets are seated
properly and all hose connections,
fasteners, and other components
are tight. Also check to be sure that
the air cleaner housing is properly
seated, that the cover fits tightly,
and the wingnut(s) is/are tight.
Tighten connections and fasteners
or replace damaged parts as
required.
14. THERMOSTATICALLY
CONTROLLED ENGINE COOLING
FAN : With the engine off and below
normal operating temperature,
check to see that the fan can be
rotated by hand on fluid coupling or
viscous drives. Replace as
necessary. 15. AUTOMATIC TRANSMISSION
FLUID :
Check the automatic transmission
fluid level at each engine oil change
and replace fluid every 84 000 km
(52,500 miles). To check the fluid
level, first set the parking brake,
then start the engine in "P" position.
With the regular brakes applied,
move the selector lever through all
the gear positions, ending with "P".
You must check the fluid level with
the engine running at slow idle and
the truck must be on a level surface.