CHEVROLET LOW CAB FORWARD 2017 Owner's Manual

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
350 Service and Maintenance
No. Service Interval
12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
Service
intervals
months or
kilometers
(miles)
whichever
occurs
first (1)
27 Driveshaft Flange Torque I T - T - T - T - T - T - T - T or every 12 months
28 Leaf spring U-bolt torque (3) T - T - T - T - T - T - T - T -
29 Wheel Nut Torque (3) T T T T T T T T T T T T T T T T
30 King Pins L L L L L L L L L L L L L L L L or every 12 months
31 Driveshaft Lubrication - L - L - L - L - L - L - L - L or every 12 months
32 Wheel Hub Bearing Grease (Front) - - - R - - - R - - - R - - - R or every 24 months
33 Accessory Drive Belt Every 160 000 km (100,000 mi): Ror every 12 months
34 Air Conditioner Blower Filter Cleaned once a month

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

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Service and Maintenance 353
If you have driven for a prolonged
period of time or in city traffic in hot
weather, wait until the fluid cools
down (Approx. 30 minutes) before
checking fluid level.
Single cab: Remove the dipstick
located at the rear right side of the
engine.
Crew cab: Remove the dipstick
located beneath the rear-of- engine
inspection panel. After unlatching
the A/T fluid inspection cover, the
dipstick will be visible.
Carefully touch the wet end of the
dipstick to find out if the fluid is cool,
warm or hot. Wipe it clean and push
it back in until the cap seats. Pull
out the dipstick and read the fluid
level.
If it felt cool, about room
temperature, the level should be in
the "C" range.
If it felt warm, about normal
operating temperature of 70 °C to
80 °C (158 °F to 176 °F), the level
should be in the "H" range.
16. ROTATE TIRES :To equalize
wear, rotate tires and adjust tire
pressures at every 12 000 km
(7,500 miles). See Tire Rotation
0 323.
17. BRAKE LINING AND PAD FOR
WEAR : Check drum brake linings
and disc brake pads for wear or
cracks at every 12 000 km
(7,500 miles). Check brakes
(including parking brake) more often
if conditions and habits result in
frequent braking.
Front disc brakes have built-in wear
indicators which are designed to
make a high pitched squeal or
cricket-like warning sound when the
brake pads are worn to the point
where new pads are needed. When the truck is in motion, the
sound may be constant or it may
come and go.
Pressing the brake pedal firmly may
cause the sound to stop.
Have the brake linings or the brake
pads replaced by your authorized
dealer as soon as possible after the
warning first becomes evident.
Failure to do so can result in
expensive damage to the brake
system or a serious accident.
18. BRAKE DRUM AND ROTOR
FOR WEAR AND DAMAGE :
Check brake drums (rear and
parking) and rotors for wear or
damage every 48 000 km
(30,000 miles) or 12 months
whichever occurs first.
19. BRAKE ELECTRIC VACUUM
PUMP (4500 Model) :
Inspect the
brake electric vacuum pump
operation every 12 000 km
(7,500 miles) or 12 months,
whichever occurs first.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
354 Service and Maintenance
How to check: This operation could
be difficult and you may choose to
have this done at your dealer
Service Department.
1. Turn the engine control switch to
the "ON" position (not to start the
engine), and press the brake pedal
several times.
2. Check for the noisy sound of the
electric vacuum pump inside the
instrument panel at the same time
as vacuum warning buzzer sound,
and check that the brake low
vacuum warning light comes on.
3. Then, after you start the engine,
the main vacuum pump driven by
the engine will start running. If the
electric vacuum pump operation
(noisy sound) and the vacuum
warning buzzer stop, and the brake
low vacuum warning light goes off
thereafter, the operation is normal.
4. If you cannot hear the noisy
sound of the electric vacuum pump,
check the electrical wiring and
repair as necessary. If it cannot be
repaired, replace the electric
vacuum pump.20. BRAKE FLUID :
Check the fluid
in the brake fluid reservoir every
12 000 km (7,500 miles) and replace
fluid every 48 000 km
(30,000 miles).
21. BRAKE LINE AND HOSES :
Check lines and hoses for proper
hook-up, binding, leaks, cracks,
chafing, etc. every 48 000 km
(30,000 miles). Any questionable
parts should be replaced or repaired
at once. When rubbing or wear is
noted on lines or hoses, the cause
must be corrected at once.
22. HYDRAULIC UNIT : Change
every 10 years.
23. DIFFERENTIAL GEAR OIL :
Replace lubricant every 48 000 km
(30,000 miles) or every 24 months.
Check lubricant level every
12 000 km (7,500 miles) or every
12 months, and add lubricant to
within 0 to 10 mm (0 to 0.4 inch) of
the bottom edge of the filler hole if
necessary. 24. POWER STEERING FLUID :
Replace power steering fluid every
24 months or 60 000 km
(37,500 miles), whichever occurs
first.
25. STEERING WHEEL FREE
PLAY :
Check steering wheel free
play after the first 1 040 km
(650 miles) and then every
10 400 km (6,500 miles).
Steering wheel free play
10-50 mm (0.39-1.97 in)
26. STEERING GEAR BOX
TORQUE : Retighten the fixing bolts
of the steering gear box to the
specified torque every 48 000 km
(30,000 miles). Specified tightening
torque.
Steering gear box tightening torque
102 Y(75 lb·ft)
27. DRIVESHAFT FLANGE
TORQUE : Check the fixing bolts of
driveshaft flange for looseness or
damage first 12 000 km
(7,500 miles). Retighten the fixing

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Service and Maintenance 355
bolts to the specified torque every
24 000 km (15,000 miles). Specified
tightening torque.Driveshaft flange tightening torque
103Y(76 lb·ft)
28. LEAF SPRING U-BOLT
TORQUE : Tighten the U-Bolt nuts
to the specified torque at 1 040 km
(650 miles), 12 000 km (7,500 miles)
and thereafter each 24 000 km
(15,000 miles). Specified tightening
torque.
Leaf spring U-bolt nut tightening torque
Front 127 Y(94 lb·ft)
Rear 177 Y(131 lb·ft)
29. 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 at
1 040 km (650 miles) and then every
12 000 km (7,500 miles). Wheel nut tightening torque
500Y(362 lb·ft)
30. KING PIN : Lubricate the grease
fitting on the king pins every
12 months or 12 000 km
(7,500 miles) whichever occurs first.
31. DRIVESHAFT : Lubricate the
grease fitting on each universal joint
and spline coupling at 12 months or
24 000 km (15,000 miles) whichever
occurs first.
32. WHEEL HUB BEARING
GREASE : Clean and repack front
wheel bearings at every brake
relining or 48 000 km (30,000 miles)
whichever comes first.
33. ACCESSORY DRIVE BELT :
Replace the belt that drives the A/C
compressor every 160 000 km
(100,000 miles).
34. AIR CONDITIONER BLOWER
FILTER : The air conditioner blower
filter should be removed and
cleaned once a month.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
356 Service and Maintenance
Maintenance Schedule Table (Diesel Vehicles)
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
No. Service Interval
16 000 km/10,000 mi
24 000 km/15,000 mi
32 000 km/20,000 mi
48 000 km/30,000 mi
64 000 km/40,000 mi
72 000 km/45,000 mi
80 000 km/50,000 mi
96 000 km/60,000 mi
112 000 km/70,000 mi
120 000 km/75,000 mi
128 000 km/80,000 mi
144 000 km/90,000 mi
160 000 km/100,000 mi
168 000 km/105,000 mi
176 000 km/110,000 mi
Service intervals
months or
kilometers
(miles)
whichever
occurs first (1)
1 Engine noise check I - I I I - I I I - I I I - I
2 Valve lash - - - A - - - A - - - A - - - or every
12 months
3 Engine oil and oil filter (2) R - R R R - R R R - R R R - R or every
12 months
4 Fuel filter - R - R - R - R - R - R - R - or every
24 months

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Service and Maintenance 357
No. Service Interval16 000 km/10,000 mi
24 000 km/15,000 mi
32 000 km/20,000 mi
48 000 km/30,000 mi
64 000 km/40,000 mi
72 000 km/45,000 mi
80 000 km/50,000 mi
96 000 km/60,000 mi
112 000 km/70,000 mi
120 000 km/75,000 mi
128 000 km/80,000 mi
144 000 km/90,000 mi
160 000 km/100,000 mi
168 000 km/105,000 mi
176 000 km/110,000 mi
Service intervals
months or
kilometers
(miles)
whichever
occurs first (1)
5 Pre-fuel filter/water
separator
- R - R - R - R - R - R - R - or every
24 months
6 Air cleaner filter - - - - - - - - - - - - - - - indicator (3)
7 Damage to air intake
ducts and hoses - I - I - I - I - I - I - I - or every
12 months
8 Drive belts I - I I I - I I I - I I I - I or every
12 months
9 Engine bolt torques - - - - - - I - - - - - I - -
10 Rotate tires Every 10 400 km (6,500 miles)
11 Engine cooling system I - I I I - I I I - I I I - I or every
12 months
12 Engine coolant Every 12 months: I
Every 24 months: R (when dealer recommended coolant is used)
13 Exhaust system I - I I I - I I I - I I I - I
14 DPF (clean filter) - - - - - - - - - - - - C - - or every
3,000 hours

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
358 Service and Maintenance
No. Service Interval16 000 km/10,000 mi
24 000 km/15,000 mi
32 000 km/20,000 mi
48 000 km/30,000 mi
64 000 km/40,000 mi
72 000 km/45,000 mi
80 000 km/50,000 mi
96 000 km/60,000 mi
112 000 km/70,000 mi
120 000 km/75,000 mi
128 000 km/80,000 mi
144 000 km/90,000 mi
160 000 km/100,000 mi
168 000 km/105,000 mi
176 000 km/110,000 mi
Service intervals
months or
kilometers
(miles)
whichever
occurs first (1)
15 DPF (pressure difference
sensor 0 point
adjustment) - - - - - - - - - - - - A - -
or every
3,000 hours
16 DPF (pressure difference
sensor hose) Every 160 000 km (100,000 miles): I
Every 400 000 km (250,000 miles): R or every
3,000 hours: I
17 Fuel line system I - I I I - I I I - I I I - I or every
12 months
18 Brake lining and pad
for wear
I - I I I - I I I - I I I - I
19 Brake drum and rotor for
wear and damage - - I - I - - I - - I - I - I or every
12 months
20 Brake electric
vacuum pump
I - I I I - I I I - I I I - I or every
12 months
21 Brake fluid I - I R I - I R I - I R I - I or every
12 months: I
or every
12 months: R

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Service and Maintenance 359
No. Service Interval16 000 km/10,000 mi
24 000 km/15,000 mi
32 000 km/20,000 mi
48 000 km/30,000 mi
64 000 km/40,000 mi
72 000 km/45,000 mi
80 000 km/50,000 mi
96 000 km/60,000 mi
112 000 km/70,000 mi
120 000 km/75,000 mi
128 000 km/80,000 mi
144 000 km/90,000 mi
160 000 km/100,000 mi
168 000 km/105,000 mi
176 000 km/110,000 mi
Service intervals
months or
kilometers
(miles)
whichever
occurs first (1)
22 Hydraulic brake booster
(HBB) fluid (5500HD
5500XD models) - - - R - - - R - - - R - - -
or every
24 months
23 Brake line and hoses - - I - I - - I - - I - I - I or every
12 months
24 Parking brake cable I - I I I - I I I - I I I - I or every
12 months
25 Automatic transmission
fluid
I - I R I - I R I - I R I - I or every
12 months
26 Differential gear oil I - I R I - I R I - I R I - I or every
24 months
27 Power steering fluid - - - R - - - R - - - R - - - or every
24 months
28 Power steering oil hoses - - - - - - R - - - - - R - - or every
24 months
29 Steering wheel free
play (4) Every 10 400 km (6,500 miles): I