2017 CHEVROLET LOW CAB FORWARD service

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
382 Service and Maintenance
Replacement Fasteners
During vehicle maintenance, any
fasteners used to replace older
ones must have the same
measurements and strength as
those removed, whether metric or
customary. Fasteners taken from
the vehicle should be saved for
reuse in the same location when
possible. Where a fastener cannot
be used again, take care to choose
a replacement that matches the old
one. For information and help, see
your dealer.
{Warning
This vehicle is primarily
dimensioned in the metric system.
Most fasteners are metric and
many are very close in dimension
to well-known customary
fasteners in the inch system.
Mismatched or incorrect fasteners
can result in damage to the
vehicle or possibly personal
injury.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Technical Data 389
Vehicle Data
Capacities and Specifications
These specifications are given here for information only. Before using them, see the Cautions and other instructions
throughout this manual–the index may help you locate such items. For more information, see the Service Manual
covering the chassis or body part in question. Your dealer may also be able to help.
Engine Specifications
Description Water-cooled, overhead
camshaft, direct injection engine with a charge air cooled turbocharger. Water-cooled, overhead
valve, engine Water-cooled, overhead
camshaft, direct injection engine with a charge air cooled turbocharger.
Manufacturer Isuzu GMPT Isuzu
Model 3.0L Diesel Engine 6.0L Gasoline Engine 5.2L Diesel Engine
Engine type Inline 4, Four Cycle V8, Four Cycle Inline 4, Four Cycle
Induction Turbocharged W/Charge
Air Cooler Mass Air Turbocharged W/Charge
Air Cooler
Bore 95.4 mm 101.6 mm 115 mm
Stroke 104.9 mm 92 mm 125 mm
Displacement 2.999 L (183.0 CID) 6.000 L (364 CID) 5.193 L (317 CID)
Full load RPM 2,800 r/min 4,300 r/min 2,400 r/min
Compression ratio 17.5 to 1 9.67 to 1 16.5 to 1
Firing order 1-3-4-2 1-8-7-2-6-5-4-3 1-3-4-2

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Technical Data 391
Transmission Specifications
Model A460Six-speed automatic
transmission (overdrive
gear for 5th and 6th),
lock-up clutch for 2nd
to 6th. 6L90
Six-speed automatic
transmission (overdrive
gear for 5th and 6th),
lock-up clutch for 2nd
to 6thA465 Model
Six-speed automatic
transmission (overdrive
gear for 5th and 6th),
lock-up clutch for 2nd
to 6th
Gear ratio 1st 3.742 to 1 4.027 to 1 3.742 to 1 2nd 2.003 to 1 2.364 to 1 2.003 to 13rd 1.343 to 1 1.532 to 1 1.343 to 1
4th 1.000 to 1 1.152 to 1 1.000 to 1
5th 0.773 to 1 0.852 to 1 0.773 to 1
6th 0.634 to 1 0.667 to 1 0.634 to 1
Reverse 3.539 to 1 3.064 to 1 3.539 to 1
Transmission oil capacity 13.4 L (28.3 pt) 12.17 L (25.72 pt) 13.1 L (27.7 pt)
Weights
Model 3.0 Diesel Engine 6.0L Gasoline Engine 5.2 Diesel Engine
Axle weight rating : Front 3500HD: 2431 kg (5,360 lb) 3500: 2204 kg (4,860 lb) 4500: 3007 kg (6,630 lb)4500HD: 2431 kg (5,360 lb)
4500XD: 3007 kg (6,630 lb)
5500HD: 3098 kg (6,830 lb) 5500XD: 3300 kg (7,275 lb)
Engine Oil Service
Model 3.0 Diesel Engine 6.0L Gasoline Engine 5.2 Diesel Engine

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
392 Technical Data
Engine oil capacityWhen changing oil only:
7.5 L (7.9 qt)*1
When changing oil andfilter: 8.2 L (8.7 qt)*1
When changing oil andfilter: 5.7 L (6.0 qt)*1When changing oil only: 9.5 L (10.0 qt)*1
When changing oil andfilter: 11.0 L (11.6 qt)*1
Engine Cooling System Service
Model 3.0 Diesel Engine 6.0L Gasoline Engine 5.2 Diesel Engine
Capacity 12.6 L (13.3 qt) 15.0 L (15.9 qt) 19.6 L (20.7 qt)
Engine oil Thermostat:
Starts to open 85 °C (185 °F) 85.5-87.5 °C
(185.9-189.5 °F)82-85 °C (180-185 °F)
Radiator pressure 108 kPa (16 psi) 103 kPa (15 psi) 108 kPa (16 psi)
Transmission Service
Model A460 6L90 A465
Transmission oil capacity 13.4 L (28.3 qt)
*312.7 L (25.7 qt)*313.1 L (27.7 qt)*3
Rear Axle Service
Model 3.0 Diesel Engine 6.0L Gasoline Engine 5.2 Diesel Engine
Differential gear oil
capacity 9.0 L (19.0 qt)
*49.7 L (20.5 qt)*44500HD/4500XD:
9.0 L (19.0 qt)*4
5500HD/5500XD:
10.0 L (21.1 qt)*4
Limited slip differential
lubricant additive 0.5 L (1.06 qt)*50.6 L (1.27 qt)*54500HD/4500XD:
0.5 L (1.06 qt)*5
5500HD/5500XD:
0.6 L (1.27 qt)*5

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
394 Technical Data
Rotor thickness[Standard Value] 40.0 mm (1.575 in) 42.0 mm (1.654 in)
[Usable Limit] 37.0 mm (1.457 in) 39.0 mm (1.535 in)
Pad thickness [Standard Value] 13.0 mm (0.512 in) 13.0 mm (0.512 in)
[Usable Limit] 1.0 mm (0.04 in) 1.0 mm (0.04 in)
Service Brakes
Brake pedal free play Refer to Brakes0275.
Clearance between the brake pedal and the brake pedal
bracket (applied to the brake pedal)
Parking Brake
Lever effective stroke (Under pull force of approx. 147 N (15 kg/33 lb) 6 - 8 notches
Electrical System
Model 3.0 Diesel Engine 6.0L Gasoline Engine 5.2 Diesel Engine
Battery type [BCI size] (RC-CCA) x No. of units 31T (160 - 750) x 2 31 (180 - 750) x 1 31 (160 - 750) x 2
*7
Starter
12 V - 2.0 kw12 V - 1.7 kw12 V - 3.0 kw
Alternator 12 V - 140 amp12 V - 145 amp12 V - 140 amp
Tightening Torque
Model 3.0 Diesel Engine 6.0L Gasoline Engine 5.2 Diesel Engine

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
Technical Data 397
No.Name
4 A/C compressor
5 Tension pulley
6 Crank pulley
7 Alternator
If your air conditioning system is
functioning properly, it is not
necessary to remove and replace
the refrigerant or compressor oil.
. A V-ribbed belt is used for the
fan belt. This type of belt
requires the tension to be
adjusted more accurately than is
required with the conventional V
belt. Inappropriate tension could
cause the belt to make noise or
break. When the fan belt is
damaged, electricity is not
properly generated or becomes
a cause of engine overheating.
You must check the tension of
the fan belt carefully.
. Use dealer-certified genuine
parts when changing the
fan belt. .
Have the vehicle inspected and
serviced at your dealer.
. The air conditioning drive belt,
if equipped, must be adjusted
after fan belt adjustment. If the
belt is not adjusted properly, the
A/C belt may experience
excessive tension, and possible
premature failure.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
398 Customer Information
Customer
Information
Customer Information
Customer SatisfactionProcedure . . . . . . . . . . . . . . . . . . . 398
Customer Assistance Offices . . . . . . . . . . . . . . . . . . . . . . 399
Customer Assistance for Text Telephone (TTY) Users . . . . . 399
Online Owner Center . . . . . . . . . 399
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . 400
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . 400
Scheduling Service Appointments . . . . . . . . . . . . . . . 401
Collision Damage Repair . . . . . 401
Service Publications Ordering Information . . . . . . . . . . . . . . . . . . 403
Radio Frequency Statement . . . . . . . . . . . . . . . . . . . 404
Reporting Safety Defects
Reporting Safety Defects tothe United States
Government . . . . . . . . . . . . . . . . . 405
Reporting Safety Defects to General Motors . . . . . . . . . . . . . 405
Vehicle Data Recording and
Privacy
Vehicle Data Recording andPrivacy . . . . . . . . . . . . . . . . . . . . . . 405
Customer Information
Customer Satisfaction
Procedure
Your satisfaction and goodwill are
important to your dealer and to
Chevrolet. Normally, any concerns
with the sales transaction or the
operation of the Chevrolet chassis,
or upfitted rear body will be resolved
by your dealer's sales or service
departments. Sometimes, however,
despite the best intentions of all
concerned, misunderstandings can
occur. If your concern has not been
resolved to your satisfaction, the
following steps should be taken:
STEP ONE : Discuss your concern
with a member of dealership
management. Normally, concerns
can be quickly resolved at that level.
If the matter has already been
reviewed with the sales, service,
or parts manager, contact the owner
of your dealership or the general
manager.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10716700) - 2017 - crc - 12/6/16
400 Customer Information
G:View maintenance schedules,
alerts, and OnStar Vehicle
Diagnostic Information. Schedule
service appointments.
I: View and print dealer-recorded
service records and self-recorded
service records.
D: Select a preferred dealer and
view locations, maps, phone
numbers, and hours.
r: Track your vehicle’s warranty
information.
J: View active recalls by Vehicle
Identification Number (VIN). See
Vehicle Identification Number (VIN)
0 383.
H:View GM Card, SiriusXM
Satellite radio (if equipped), and
OnStar account information (if
equipped).
F: Chat with online help
representatives.
See my.chevrolet.com to register
your vehicle.
GM Mobility
Reimbursement Program
This program is available to
qualified applicants for cost
reimbursement of eligible
aftermarket adaptive equipment
required for the vehicle, such as
hand controls or a wheelchair/
scooter lift for the vehicle.
For more information on the limited
offer, visit www.gmmobility.com or
call the GM Mobility Assistance
Center at 1-800-323-9935. Text
Telephone (TTY) users, call
1-800-833-9935.
Roadside Assistance
Program
Call 1-888-899-1327. (Text
Telephone (TTY): 1-888-889-2438.) Service is available 24 hours a day,
365 days a year.
Calling for Assistance
When calling Roadside Assistance,
have the following information
ready:
.
Your name, home address, and
home telephone number.
. Telephone number of your
location.
. Location of the vehicle.
. Model, year, color, and license
plate number of the vehicle.
. Odometer reading, Vehicle
Identification Number (VIN), and
delivery date of the vehicle.
. Description of the problem.
Coverage
Services are provided for the
duration of the vehicle’s powertrain
warranty.
Anyone driving the vehicle is
covered.