steering CHEVROLET LOW CAB FORWARD 2017 Workshop Manual

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
360 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)
30 Steering gear box torque - - T - T - - T - - T - T - - or every
12 months
31 Drive shaft flange torque T - T T T - T T T - T T T - T or every
12 months
32 Drive shaft lubrication L - L L L - L L L - L L L - L or every
12 months
33 Leaf spring U-bolt
torque (4) T - T T T - T T T - T T T - T
34 Wheel nut torque (4) Every 10 400 km (6,500 miles)
35 King pin L - L L L - L L L - L L L - L or every
12 months
36 Wheel hub bearing grease
- Front (5)
- - - R - - - R - - - R - - - or every
24 months
37 Air conditioner blower
filter Cleaned once a month
38 Exhaust injector Cleaned every 176,000 km (110,000 miles)

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
366 Service and Maintenance
25. Automatic Transmission
Fluid :Check the automatic
transmission fluid level at each
engine oil change and replace fluid
every 48 000 km (30,000 miles). Do
not overfill.
26. Differential Gear Oil : Replace
lubricant every 48 000 km
(30,000 miles). Check lubricant level
every 16,000 km (10,000 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.
27. Power Steering Fluid :
Replace power steering fluid every
24 months or 48 000 km
(30,000 miles), whichever occurs
first.
28. Power Steering Oil Hoses :
Replace power steering oil hoses
every 24 months or 80 000 km
(50,000 miles), whichever occurs
first.
29. 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)
30. Steering Gear Box Torque :
Retighten the attaching bolts of the
steering gear box to the specified
torque every 12 months or every
32 000 km (20,000 miles) whichever
occurs first. Steering gear box tightening torque
103 Y(76 lb·ft)
31. Driveshaft Flange Torque :
Check the fixing bolts of driveshaft
flange for looseness or damage
after the first 16 000 km
(10,000 miles). Driveshaft flange tightening torque
103Y(76 lb·ft)
32. Driveshaft Lubrication :
Lubricate the grease fitting on the
center bearing, as well as each
universal joint and spline coupling
every 12 months or 16 000 km
(10,000 miles) whichever occurs
first. 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
3500HD 127 Y
(94 lb·ft) 177
Y
(131 lb·ft)
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

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
368 Service and Maintenance
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.
Engine Conditions
Checking the Engine for
Startability and Abnormal Noises1. Make sure the parking brake is securely engaged. Step firmly
on the brake pedal.
2. Make sure the selector lever is in "P" or "N" position.
For safety, firmly press the
brake pedal before starting the
engine.
3. Turn the engine control switch to start the engine.
Check that the engine starts
quickly with no abnormal
noises. Checking Condition of the Engine
at Low Speeds and during
Acceleration
1. Make sure the transmission is in the "P" or "N" position and
the parking brake is securely
engaged.
2. Turn the engine control switch to start the engine, and run it to
warm up.
3. Check that the engine is running at a speed within the
standard idle speed range.
For diesel vehicles, during
regeneration of the diesel
particulate filter (DPF), the
engine idle speed may
increase.
4. Drive the vehicle, making sure the accelerator pedal does not
stick when gradually
accelerating, the engine speed
rises smoothly and it does not
knock.
Recommended Daily
(Pre-operation) Inspections
These checks are in addition to, not
instead of, any legally required daily
inspections. See related topics
under "Maintenance Schedule",
especially if problems are found.
For safe and comfortable driving,
keep record of the distances driven
and the condition of the vehicle
during operation. Perform
inspections at appropriate intervals,
and perform maintenance in
accordance with the findings of the
inspections. If an inspection reveals
an abnormality or there was an
abnormality the previous time the
vehicle was driven, have the vehicle
repaired by the nearest dealer
before it is driven again.
1. Components that showed abnormalities during the
previous operation
.Check components that
showed abnormalities
during the previous
operation

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Service and Maintenance 369
2. Checks performed at theengine
.Fan belt looseness and
damage
. Engine oil level
. Engine coolant level
. Power steering fluid level
3. Checks performed from the driver's seat
.Brake fluid level
. Brake pedal free play
. Operation of meters,
gauges and warning/
indicator lights
. Engine startability,
abnormal noise and color of
exhaust gases
. Parking brake lever stroke
. Windshield washer fluid
spray condition and
windshield wiper
effectiveness
. Windshield washer fluid
level .
Steering wheel position and
free play
. Operation of horn and turn
signal lights
. Door lock operation
4. Checks performed during a walk around the vehicle
.Illumination, flashing,
contamination, damage and
obstruction of lights
. Contamination, damage ad
obstruction of windows,
mirrors and reflectors
. Leaf spring damage
. Oil, engine coolant, fuel,
brake fluid and power
steering fluid leaks
. Water separator
5. Checking wheels and tires .Air pressure
. Cracks and other damage
. Abnormal wear
. Tread depth
. Mounting condition of all
wheel nuts 6. Checks performed after the
engine startup
.Oil, engine coolant, fuel,
brake fluid and power
steering fluid leaks
. Inspect the exhaust system,
checking that the tailpipe is
clear
7. Checks performed while driving the vehicle
.Brake effectiveness
. Engine abnormal noises
Keep the Floor Around the Driver
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 (Continued)

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Service and Maintenance 375
Additional
Maintenance and Care
Owner Safety and Routine
Maintenance
Listed below are vehicle checks
which should be made periodically
by either the owner or a qualified
technician to ensure proper
performance and safety of your
vehicle. Take any problems promptly
to a technician for service advice.
For your safety and that of others,
any of the safety-related
components that may have been
damaged in an accident should be
checked and necessary repairs
performed before operating your
vehicle.
At the minimum, these routine
checks should be made every
6 months or 16,000 km
(10,000 miles) for diesel vehicles,
or every 9,600 km (6,000 miles) for
gasoline vehicles, whichever comes
first. Whenever repairs are
necessary, have them completed
before operating the vehicle.A: Parking Brake :
Park on a fairly
steep hill and hold the vehicle with
the parking brake only. This checks
holding ability.
Before checking item (B) below, be
sure to have enough room around
the vehicle. Then firmly apply both
the parking brake see Parking
Brake 0221 and the regular brakes.
Do not use the accelerator pedal.
If the engine starts, be ready to turn
off the engine control switch at
once. Take these precautions
because the vehicle could move
without warning and possibly cause
injury or property damage.
B: Starter Safety Switch : Check
by trying to start the engine in each
gear. The starter should crank only
at selector position "P" or "N".
C: Transmission Shift Indicator :
Check that the indicator points to
the gear chosen.
D: Steering : Be alert for any
changes in steering action. An
inspection or service is needed
when: the steering wheel is harder to turn or has too much free play,
or when there are strange sounds
when turning or parking.
E: Wheel Alignment, Balance, and
Tires :
Check tires for abnormal
wear or damage. Also, check for
damaged wheels. A pull right or left
on a straight and level road may
show the need for a wheel
alignment. A vibration of the
steering wheel or seat at normal
highway speeds may mean a wheel
balancing is needed. Check tire
pressure when the tires are "cold,"
at least monthly, and whenever the
vehicle is serviced.
Check the pressure more often if
daily checks show it's needed.
(Refer to "Recommended Daily
(Pre-operation) Inspections" under
Owner Checks and Services 0367).
Change tire pressure as needed
when changing loads.
F: Brakes : Be alert to illumination
of the brake system warning light or
brake low vacuum warning light
(4500HD, 4500XD models) or the
tone alarm, or changes in braking
action, such as repeated pulling to

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Technical Data 393
Fuel
Fuel tank capacity
*6113 L (30.0 qt/24.9 gal) 113 L (30.0 qt/24.9 gal) 113 L (30.0 qt/24.9 gal)125 L (33.0 qt/27.5 gal)
Diesel Exhaust Fluid (DEF)
DEF tank capacity (Diesel Only) 16.0 L (4.23 gal)
Steering
Steering wheel free play 10 - 50 mm (0.39 - 1.97 in)
Power steering fluid capacity 1.5 L (1.6 qt)
Wheel
Wheel alignment Toe-in -2 to 2 mm (-0.08 to 0.08 in)
Camber 0°15’
Caster LH 2°50’, RH 3°40’
King pin 12°
Wheel hub bearing grease capacity 0.11 kg (0.24 lb)
Wheel stud nut torque : Front and rear 500 Y(50 kgf m/363 lb ft)
Disc Brakes
Model 3500/3500HD/4500HD 4500/4500XD/5500HD/5500XD
Brake size (Diameter x
Thickness) 293 x 40 mm (11.54 x 1.57 in) 363 x 42 mm (14.29 x 1.65 in)

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
396 Technical Data
Engine Drive Belt Routing
Fan Belt and Air Conditioning
Compressor Belt
See theMaintenance Schedule
0 345.
3.0L L4 Engine (IZ3)
No. Name
1 Fan Pulley
2 Tension pulley
3 A/C compressor
4 A/C belt
5 Crank pulley
6 Idler No.
Name
7 Alternator
8 Fan belt
If your air conditioning system is
functioning properly, it is not
necessary to remove and replace
the refrigerant or compressor oil.
6.0L V8 Engine (L96)
No. Name
1 Fan belt idler pulley
2 Alternator
3 Vacuum pulley
4 Power steering pump pulley No.
Name
5 Cooling fan pulley
6 Crank pulley
7 A/C belt
8 A/C compressor
9 Fan belt
10 Fan belt tensioner
5.2L L4 Engine (I1B)
No. Name
1 Fan belt
2 Fan pulley
3 A/C belt

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Customer Information 403
For emergency towing see
Roadside Assistance Program
0400.
Gather the following information:
. Driver name, address, and
telephone number.
. Driver license number.
. Owner name, address, and
telephone number.
. Vehicle license plate number.
. Vehicle make, model, and
model year.
. Vehicle Identification
Number (VIN).
. Insurance company and policy
number.
. General description of the
damage to the other vehicle.
Choose a reputable repair facility
that uses quality replacement parts.
See “Collision Parts” earlier in this
section.Managing the Vehicle Damage
Repair Process
In the event that the vehicle requires
damage repairs, GM recommends
that you take an active role in its
repair. If you have a pre-determined
repair facility of choice, take the
vehicle there, or have it towed there.
Specify to the facility that any
required replacement collision parts
be original equipment parts, either
new Genuine GM parts or recycled
original GM parts. Remember,
recycled parts will not be covered by
the GM vehicle warranty.
Insurance pays the bill for the repair,
but you must live with the repair.
Depending on your policy limits,
your insurance company may
initially value the repair using
aftermarket parts. Discuss this with
the repair professional, and insist on
Genuine GM parts. Remember,
if the vehicle is leased, you may be
obligated to have the vehicle
repaired with Genuine GM parts,
even if your insurance coverage
does not pay the full cost. If another party's insurance
company is paying for the repairs,
you are not obligated to accept a
repair valuation based on that
insurance company's collision policy
repair limits, as you have no
contractual limits with that company.
In such cases, you can have control
of the repair and parts choices as
long as the cost stays within
reasonable limits.
Service Publications
Ordering Information
Service Manuals
Service Manuals have the diagnosis
and repair information on the
engines, transmission, axle,
suspension, brakes, electrical,
steering, body, etc.
Owner Information
Owner publications are written
specifically for owners and intended
to provide basic operational
information about the vehicle. The
Owner Manual includes the
Maintenance Schedule for all
models.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Index 409
Diesel Engine (cont'd)High Idle System . . . . . . . . . . . . . 174
Diesel Exhaust Fluid . . . . . . . . 30, 189
Diesel Exhaust Fluid (DEF) Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 83
Diesel Exhaust Fluid (DEF) Warning Light . . . . . . . . . . . . . . . . . . 90
Diesel Particulate Filter . . . . . . . . . 180
Distracted Driving . . . . . . . . . . . . . . . 133
Dome Lamps . . . . . . . . . . . . . . . . . . . 107
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Power Locks . . . . . . . . . . . . . . . . . . . . 39
Drive Belt Routing, Engine . . . . . . 396
Driver Behavior . . . . . . . . . . . . . . . . . 133
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . . 93
Driving
Emergencies . . . . . . . . . . . . 148, 161
For Better Fuel Economy . . . . . . . 29
Hill and Mountain Roads . . . . . . 144
If the Vehicle is Stuck . . . . . . . . . 148
Wet Roads . . . . . . . . . . . . . . . . . . . 143
Winter . . . . . . . . . . . . . . . . . . . . . . . . 145
Driving the Vehicle . . . . . . . . . . . . . . . . 3
E
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . . . . 241 Electrical System
Overload . . . . . . . . . . . . . . . . . . . . . 298
Emergencies . . . . . . . . . . . . . . 148, 161
Engine Air Cleaner/Filter . . . . . . . . . . . . . 263
Alarm and AutomaticShutdown . . . . . . . . . . . . . . . . . . . 174
Check Light (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . 84
Checks Before Operating . . . . . 175
Compartment Overview . . . . . . . 249
Coolant . . . . . . . . . . . . . . . . . . . . . . . 263
Coolant Temperature Gauge . . . . 82
Cover . . . . . . . . . . . . . . . . . . . . . . . . . 250
Drive Belt Routing . . . . . . . . . . . . 396
Exhaust . . . . . . . . . . . . . . . . . . . . . . 178
Heater . . . . . . . . . . . . . . . . . . . . . . . . 173
High Idle System . . . . . . . . . . . . . 174
Oil Pressure Light . . . . . . . . . . . . . . 89
Overheating . . . . . . . . . . . . . . . . . . 269
Reduced Power Light . . . . . . . . . . . 91
Running While Parked . . . . . . . . 179
Shutdown Warning Light . . . . . . . . 91
Engine Oil Level Indicator Light . . . . . . . . . . . . 90
Engines Diesel Fuel . . . . . . . . . . . . . . . . . . . 232
Exhaust Brake . . . . . . . . . . . . . . . . . . 222 Exhaust Brake Light . . . . . . . . . . . . . 88
Exhaust Fluid
Diesel . . . . . . . . . . . . . . . . . . . . . . . . 189
Extender, Seat Belt . . . . . . . . . . . . . . 55
Exterior Lamp Controls . . . . . . . . . 103
F
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Filter, Engine Air Cleaner . . . . . . . . . . . 263
Fixed Mast Antenna . . . . . . . . . . . . 113
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 104
Flashers, Hazard Warning . . . . . . 105
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 326
Fluid Automatic Transmission . . . . . . 260
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 280
Diesel Exhaust . . . . . . . . . . . . . . . . . 30
Power Steering . . . . . . . . . . . . . . . 273
Washer . . . . . . . . . . . . . . . . . . . . . . . 274
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 404
Front Seat Position Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 44
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Biodiesel . . . . . . . . . . . . . . . . . . . . . 233
Cold Weather Operation . . . . . . 235
Diesel Engines . . . . . . . . . . . . . . . 232

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Index 411
LightsAntilock Brake System
(ABS) Warning . . . . . . . . . . . . . . . . 87
Automatic Transmission Fluid Temperature . . . . . . . . . . . . . 88
Battery Warning . . . . . . . . . . . . . . . . 83
Brake System Warning . . . . . . . . . 84
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . 84
Cruise Control . . . . . . . . . . . . . . . . . . 92
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 92
Diesel Exhaust Fluid (DEF) . . . . . 90
Engine Oil Level Indicator . . . . . . 90
Engine Oil Pressure . . . . . . . . . . . . 89
Engine Shutdown Warning . . . . . 91
Exhaust Brake . . . . . . . . . . . . . . . . . . 88
Flash-to-Pass . . . . . . . . . . . . . . . . . 104
High-Beam On . . . . . . . . . . . . . . . . . . 92
High/Low Beam Changer . . . . . 104
Overdrive Off . . . . . . . . . . . . . . . . . . . 89
Reduced Engine Power . . . . . . . . 91
Seat Belt Reminders . . . . . . . . . . . . 83
Service Transmission Warning . . . . . . . . . . . . . . . . . . . . . . . 88
Service Vehicle Soon . . . . . . . . . . . 84
Wait to Start . . . . . . . . . . . . . . . . . . . . 89
Loading the Vehicle . . . . . . . . . . . . . . 64 Locks
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Power Door . . . . . . . . . . . . . . . . . . . . . 39
M
Maintenance and CareAdditional . . . . . . . . . . . . . . . . . . . . . 375
Maintenance Schedule . . . . . . . . . 345 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 378
Malfunction Indicator Lamp . . . . . . 84
Messages Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 97
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Heated . . . . . . . . . . . . . . . . . . . . . . . . . 40
N
New Vehicle Break-In . . . . . . . . . . . 162
Noise Control System . . . . . . . . . . 284
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . 80Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Oil Engine . . . . . . . . . . . . . . . . . . . 251, 257
Pressure Light . . . . . . . . . . . . . . . . . . 89
Online Owner Center . . . . . . . . . . . 399
Operating Temperature . . . . . . . . . 172
Ordering Service Publications . . . . . . . . . . 403 Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Overdrive Off . . . . . . . . . . . . . . . . . . . 215
Overdrive Off Light . . . . . . . . . . . . . . 89
Overheating, Engine . . . . . . . . . . . . 269
Owner Checks and Services . . . . 367
P
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 221
Over Things That Burn . . . . . . . 176
Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Perchlorate Materials Requirements, California . . . . . . 245
Port
USB . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 39
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . 74
Reduced Engine Light . . . . . . . . . . 91
Steering Fluid . . . . . . . . . . . . . . . . . 273
Windows . . . . . . . . . . . . . . . . . . . . . . . 41
Power Take-Off (PTO) . . . . . . . . . . 242
Pregnancy, Using Seat Belts . . . . 53
Privacy Vehicle Data Recording . . . . . . . 405