engine oil CHEVROLET LOW CAB FORWARD 2018 Repair Manual

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
334 Technical Data
12: Model CombinationF: 3500HD/4JJ1 Diesel/13,000lbs
K: 4500XD/4HK1 Diesel/16,000lbs
0: 4500HD/4HK1 Diesel/14,500lbs
E: GM Chevrolet 5500HD/5500XD
3: 5500XD/4HK1 Diesel/19,500lbs
8: 3500 & 4500/Gas
9: 5500HD/4HK1 Diesel/17,950lbs
13–17: Sequence Number Positions 13 through 17 represent the number sequentially assigned by the manufacturer in the production
process.
Interpretation of the VIN may differ
depending on the vehicle. For
further details, please ask your
dealer.
Engine NumberThe engine number is located on
the left-side rear part of the engine
block and the right-side front part of
the oil pan.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
336 Technical Data
Valve clearance (Between
cam and roller)Both intake and exhaust valves:
0.6 mm (0.024 in) in cold engine
Idling speed 500 - 600 r/min
Fan belt tension New belt: 5 - 7 mm (0.20 - 0.28 in)/184 - 206 Hz
When used: 8 - 9 mm (0.31 - 0.35 in)/158 - 170 Hz
Oil filter Cartridge
Engine oil capacity When changing oil and filter:
11.0 L (11.6 qt)
*1
Engine coolant capacity 19.6 L (20.7 qt)*2
Preheating system Glow plugs
Transmission Specifications
Model A465 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 2nd 2.003 to 13rd 1.343 to 1
4th 1.000 to 1
5th 0.773 to 1
6th 0.634 to 1
Reverse 3.539 to 1
Transmission oil capacity 13.1 L (27.7 pt)

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Technical Data 337
Weights
Axle weight rating : Front 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
Engine oil capacity When changing oil only: 9.5 L (10.0 qt)
*1
When changing oil and filter: 11.0 L (11.6 qt)*1
Engine Cooling System Service
Capacity 19.6 L (20.7 qt)
Engine oil Thermostat:
Starts to open 82-85 °C (180-185 °F)
Radiator pressure 108 kPa (16 psi)
Transmission Service
Transmission oil capacity 13.1 L (27.7 qt)
*3
Rear Axle Service
Differential gear oil
capacity 4500HD/4500XD:
9.0 L (19.0 qt)
*4
5500HD/5500XD:10.0 L (21.1 qt)*4
Limited slip differential
lubricant additive 4500HD/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.-
11254764) - 2018 - crc - 12/5/16
340 Technical Data
Oil filter—
Oil filter cartridge 63.7 Y(6.5 kgf m/47.0 lb ft)
Remarks:
*1see Engine Oil 0223.
Remarks:*2see Engine Coolant 0231.
Remarks:*3see Automatic Transmission Fluid 0229.
Remarks:*4see Rear Axle (Gear Oil Viscosity Chart) 0249 orRear Axle (Oil Level Check) 0249.
Remarks:*5only for vehicles equipped with optional limited slip differential.
Remarks:*6The fuel tank capacity is stated on a metal plate attached to the fuel tank body. Only fill the tank to
95 percent of its capacity; this allows room for the expansion of the fuel.
Remarks:
*7larger capacity batteries 31 (180-930) × 2 can also be used. However, do not mix batteries of different
types and from different makers.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Technical Data 341
Engine Drive Belt Routing
Fan Belt and Air Conditioning
Compressor Belt
See theMaintenance Schedule
0 303.
No. Name
1 Fan belt
2 Fan pulley
3 A/C belt
4 A/C compressor
5 Tension pulley No.
Name
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.-
11254764) - 2018 - crc - 12/5/16
Index 353
Diesel Exhaust Fluid (DEF)Warning Light . . . . . . . . . . . . . . . . . . 80
Diesel Particulate Filter . . . . . . . . . 161
Distracted Driving . . . . . . . . . . . . . . . 122
Dome Lamps . . . . . . . . . . . . . . . . . . . . 96
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Locks . . . . . . . . . . . . . . . . . . . . 33
Drive Belt Routing, Engine . . . . . . 341
Driver Behavior . . . . . . . . . . . . . . . . . 122
Driver Information Cen- ter (DIC) . . . . . . . . . . . . . . . . . . . . . . . 82
Driving Emergencies . . . . . . . . . . . . 137, 146
For Better Fuel Economy . . . . . . . 23
Hill and Mountain Roads . . . . . . 132
If the Vehicle is Stuck . . . . . . . . . 136
Wet Roads . . . . . . . . . . . . . . . . . . . 132
Winter . . . . . . . . . . . . . . . . . . . . . . . . 133
E
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 215
Electrical System Overload . . . . . . . . . . . . . . . . . . . . . 264
Emergencies . . . . . . . . . . . . . . 137, 146
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 231 Engine (cont'd)
Alarm and Automatic
Shutdown . . . . . . . . . . . . . . . . . . . 155
Check Light (Malfunction In-
dicator) . . . . . . . . . . . . . . . . . . . . . . . . 74
Checks Before Operating . . . . . 156
Compartment Overview . . . . . . . 222
Coolant . . . . . . . . . . . . . . . . . . . . . . . 231
Coolant Temperature Gauge . . . . 72
Cover . . . . . . . . . . . . . . . . . . . . . . . . . 222
Drive Belt Routing . . . . . . . . . . . . 341
Exhaust . . . . . . . . . . . . . . . . . . . . . . 159
Heater . . . . . . . . . . . . . . . . . . . . . . . . 154
High Idle System . . . . . . . . . . . . . 155
Oil Pressure Light . . . . . . . . . . . . . . 79
Overheating . . . . . . . . . . . . . . . . . . 237
Reduced Power Light . . . . . . . . . . . 81
Running While Parked . . . . . . . . 160
Shutdown Warning Light . . . . . . . . 80
Engine Oil Level Indicator Light . . . . . . . . . . . . 80
Engines Diesel Fuel . . . . . . . . . . . . . . . . . . . 206
Exhaust Brake . . . . . . . . . . . . . . . . . . 201
Exhaust Brake Light . . . . . . . . . . . . . 78
Exhaust Fluid Diesel . . . . . . . . . . . . . . . . . . . . . . . . 170
Extender, Seat Belt . . . . . . . . . . . . . . 49 Exterior Lamp Controls . . . . . . . . . . 92
F
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Filter, Engine Air Cleaner . . . . . . . . . . . 231
Fixed Mast Antenna . . . . . . . . . . . . 102
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . 93
Flashers, Hazard Warning . . . . . . . 94
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 287
Fluid Automatic Transmission . . . . . . 229
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 246
Diesel Exhaust . . . . . . . . . . . . . . . . . 24
Power Steering . . . . . . . . . . . . . . . 240
Washer . . . . . . . . . . . . . . . . . . . . . . . 241
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 348
Front Seat Position Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 38
Fuel Biodiesel . . . . . . . . . . . . . . . . . . . . . 207
Cold Weather Operation . . . . . . 209
Diesel Engines . . . . . . . . . . . . . . . 206
Economy Driving . . . . . . . . . . . . . . . 23
Filling the Tank . . . . . . . . . . . . . . . 213
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Index 355
Lights (cont'd)Automatic Transmission
Fluid Temperature . . . . . . . . . . . . . 78
Battery Warning . . . . . . . . . . . . . . . . 73
Brake System Warning . . . . . . . . . 75
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . 74
Cruise Control . . . . . . . . . . . . . . . . . . 82
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 82
Diesel Exhaust Fluid (DEF) . . . . . 80
Engine Oil Level Indicator . . . . . . 80
Engine Oil Pressure . . . . . . . . . . . . 79
Engine Shutdown Warning . . . . . 80
Exhaust Brake . . . . . . . . . . . . . . . . . . 78
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 93
High-Beam On . . . . . . . . . . . . . . . . . . 81
High/Low Beam Changer . . . . . . . 93
Idle Shutdown . . . . . . . . . . . . . . . . . . 81
Overdrive Off . . . . . . . . . . . . . . . . . . . 79
Reduced Engine Power . . . . . . . . 81
Seat Belt Reminders . . . . . . . . . . . . 73
Service Transmission Warning . . . . . . . . . . . . . . . . . . . . . . . 78
Service Vehicle Soon . . . . . . . . . . . 74
Wait to Start . . . . . . . . . . . . . . . . . . . . 79
Loading the Vehicle . . . . . . . . . . . . . . 58 Locks
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Door . . . . . . . . . . . . . . . . . . . . . 33
M
Maintenance and CareAdditional . . . . . . . . . . . . . . . . . . . . . 323
Maintenance Schedule . . . . . . . . . 303 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 326
Malfunction Indicator Lamp . . . . . . 74
Messages Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 86
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Heated . . . . . . . . . . . . . . . . . . . . . . . . . 34
N
New Vehicle Break-In . . . . . . . . . . . 147
Noise Control System . . . . . . . . . . 250
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . 71Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 223
Pressure Light . . . . . . . . . . . . . . . . . . 79
Online Owner Center . . . . . . . . . . . 343
Operating Temperature . . . . . . . . . 153
Ordering Service Publications . . . . . . . . . . 347 Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Overdrive Off . . . . . . . . . . . . . . . . . . . 195
Overdrive Off Light . . . . . . . . . . . . . . 79
Overheating, Engine . . . . . . . . . . . . 237
Owner Checks and Services . . . . 317
P
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . 200
Over Things That Burn . . . . . . . 157
Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Perchlorate Materials Re- quirements, California . . . . . . . . . 218
Port
USB . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 33
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . 67
Reduced Engine Light . . . . . . . . . . 81
Steering Fluid . . . . . . . . . . . . . . . . . 240
Windows . . . . . . . . . . . . . . . . . . . . . . . 35
Power Take-Off (PTO) . . . . . . . . . . 215
Pregnancy, Using Seat Belts . . . . 47
Privacy Vehicle Data Recording . . . . . . . 349