2021 CHEVROLET EXPRESS CARGO transmission oil

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
208 Vehicle Care
FusesUsage
18 A/C
19 Engine control module battery
20 Left stop/turn cutaway lamp
21 Left stop/turn trailer lamp
22 Right stop/turn cutaway lamp
23 NOX Sensor (Diesel only)
24 Fuel pump 25 Auxiliary power outlet
26 Body control module 3 27 Special equipment option
28 Airbag
29 Steering wheel sensor
30 Engine control module ignition
31 Transmission control module Ignition Fuses
Usage
32 Transmission control module 1 battery
33 Rear parking aid module
34 NOX Sensor (Diesel only)
35 Fuel heater control module (Diesel only)
36 Fuel system control module battery
41 Transmission control module 2, battery
signal
42 Trailer wiring
43 Electro viscous fan clutch (Diesel only)
44 Starter solenoid 45 Engine control module, powertrain signal 2
46 DC-AC inverter 47 –
51 Left high-beam headlamp Fuses
Usage
52 Right high-beam headlamp
53 Left low-beam headlamp
54 Right low-beam headlamp
55 Wipers
56 Canister vent solenoid
58 Body control module 2
59 Body control module 1 61 Engine oil solenoid/ Crankcase vent heater
(Diesel only)
62 O2 sensor 2
63 –
64 Mass airflow/ Canister vent
65 Ignition coils/injectors - odd
66 Daytime running lamps 2
67 Daytime running lamps 1

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 215
Tire Terminology and Definitions
Air Pressure:The amount of air inside
the tire pressing outward on each
square inch of the tire. Air pressure is
expressed in kPa (kilopascal) or psi
(pounds per square inch).
Accessory Weight
:The combined
weight of optional accessories. Some
examples of optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship of a
tire's height to its width.
Belt
:A rubber coated layer of cords
between the plies and the tread. Cords
may be made from steel or other
reinforcing materials.
Bead
:The tire bead contains steel
wires wrapped by steel cords that hold
the tire onto the rim.
Bias Ply Tire
:A pneumatic tire in which
the plies are laid at alternate angles
less than 90 degrees to the centerline
of the tread. Cold Tire Pressure
:The amount of air
pressure in a tire, measured in kPa
(kilopascal) or psi (pounds per square
inch) before a tire has built up heat
from driving. See Tire Pressure0217.
Curb Weight
:The weight of a motor
vehicle with standard and optional
equipment including the maximum
capacity of fuel, oil, and coolant, but
without passengers and cargo.
DOT Markings
:A code molded into the
sidewall of a tire signifying that the tire
is in compliance with the U.S.
Department of Transportation (DOT)
Motor Vehicle Safety Standards. The
DOT code includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also identify the
tire manufacturer, production plant,
brand, and date of production.
GVWR
:Gross Vehicle Weight Rating.
See Vehicle Load Limits 0132.
GAWR FRT
:Gross Axle Weight Rating
for the front axle. See Vehicle Load
Limits 0132. GAWR RR
:Gross Axle Weight Rating
for the rear axle. See Vehicle Load
Limits 0132.
Intended Outboard Sidewall
:The side
of an asymmetrical tire that must
always face outward when mounted on
a vehicle.
Kilopascal (kPa)
:The metric unit for air
pressure.
Light Truck (LT-Metric) Tire
:A tire used
on light duty trucks and some
multipurpose passenger vehicles.
Load Index
:An assigned number
ranging from 1 to 279 that corresponds
to the load carrying capacity of a tire.
Maximum Inflation Pressure
:The
maximum air pressure to which a cold
tire can be inflated. The maximum air
pressure is molded onto the sidewall.
Maximum Load Rating
:The load rating
for a tire at the maximum permissible
inflation pressure for that tire.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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252 Service and Maintenance
help the longevity and efficient operation of
the air conditioning system. This service can
be complex. See your dealer.
Tire Rotation and Required Services
Every 12 000 km (7,500 mi)
Rotate the tires, if recommended for the
vehicle, and perform the following services.
SeeTire Rotation 0221.
.Check engine oil level and oil
life percentage. If needed, change engine
oil and filter, and reset oil life system.
See Engine Oil 0184 and
Engine Oil Life System 0186.
.Check engine coolant level. See Cooling
System 0191.
.Check windshield washer fluid level. See
Washer Fluid 0196.
.Check tire inflation pressures, including
the spare. See Tire Pressure0217.
.Inspect tire wear. See Tire Inspection
0 221.
.Visually check for fluid leaks.
.Inspect engine air cleaner filter. See
Engine Air Cleaner/Filter 0189.
.Inspect brake system. See Exterior Care
0 242.
.Visually inspect steering, suspension, and
chassis components for damage, including
cracks or tears in the rubber boots, loose
or missing parts, or signs of wear at least
once a year. See Exterior Care0242.
.Inspect power steering for proper
attachment, connections, binding, leaks,
cracks, chafing, etc.
.Visually inspect halfshafts and drive
shafts for excessive wear, lubricant leaks,
and/or damage including: tube dents or
cracks, constant velocity joint or universal
joint looseness, cracked or missing boots,
loose or missing boot clamps, center
bearing excessive looseness, loose or
missing fasteners, and axle seal leaks.
.Check restraint system components. See
Safety System Check 035.
.Visually inspect fuel system for damage
or leaks.
.Visually inspect exhaust system and
nearby heat shields for loose or damaged
parts.
.Lubricate body components. See Exterior
Care 0242.
.Check starter switch. See Starter Switch
Check 0200.
.Check automatic transmission shift lock
control function. See Automatic
Transmission Shift Lock Control Function
Check 0201.
.Check ignition transmission lock. See
Ignition Transmission Lock Check 0201.
.Check parking brake and automatic
transmission park mechanism. See Park
Brake and P (Park) Mechanism Check
0 201.
.Check accelerator pedal for damage, high
effort, or binding. Replace if needed.
.Lubricate the steering linkage (greasable
joints). See Normal and Severe
Maintenance Schedules. For severe
commercial use vehicles, see Special
Application Services 0255.
.Visually inspect the spare tire to ensure
that it is tightly stowed under the vehicle.
Push, pull, and try to turn the tire. If the
spare tire moves, tighten as necessary.
See Tire Changing 0229.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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254 Service and Maintenance
Maintenance Schedule Additional
Required Services - Severe12 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 mi84 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 204 000 km/127,500 mi 216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services. Check engine oil
level and oil life percentage. Change engine oil and filter,
if needed.
Lubricate the steering linkage.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Inspect evaporative control system. (1)@ @@
Replace engine air cleaner filter. (2)@@@
Change automatic transmission fluid and filter.@@@
Replace spark plugs. Inspect spark plug wires and/or boots.@
Drain and fill engine cooling system. (3)@
Visually inspect accessory drive belts. (4)@
Replace brake fluid. (5)
Replace windshield wiper blades. (6)
@ @ @ @ @ @ @ @ @ @
Replace air conditioning desiccant. (7)
Footnotes—Maintenance Schedule
Additional Required Services - Severe
(1) Visually check all fuel and vapor lines
and hoses for proper attachment,
connection, routing, and condition. (2)
Or every four years, whichever comes
first. If driving in dusty conditions, inspect
the filter at each oil change or more often
as needed. See Engine Air Cleaner/Filter
0 189.
(3) Or every five years, whichever comes
first. See Cooling System 0191. (4)
Or every 10 years, whichever comes first.
Inspect for fraying, excessive cracking,
or damage; replace, if needed.
(5) Replace brake fluid every five years. See
Brake Fluid 0197.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Service and Maintenance 257
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
This maintenance section applies to vehicles with a gasoline engine. If the vehicle has a diesel engine, see the maintenance schedule section in
the Duramax diesel supplement.
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission (6-Speed Transmission) DEXRON-VI Automatic Transmission Fluid.
Automatic Transmission (8-Speed Transmission) DEXRON-HP Automatic Transmission Fluid.
Chassis Lubrication, Parking Brake Cable Guides Chassis lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling System
0 191.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil0184.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid.
Key Lock Cylinders, Hood Hinges Multi-Purpose Lubricant, Superlube. See your dealer. Power Steering System GM Power Steering Fluid. See your dealer. Rear Axle See your dealer.
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
288 Index
Engine (cont'd)Coolant Temperature Gauge . . . . . . . . . . . . 73
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . 191
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 264
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 186
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . 72
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . 80
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 85
Running While Parked . . . . . . . . . . . . . . . . . 142
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Enhanced Technology Glass . . . . . . . . . . . . . . . . 21
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . . 172
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 275
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .35
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . 90
Exterior Lamps Off Reminder . . . . . . . . . . . . . 90
Exterior Lighting Battery Saver . . . . . . . . . . . 95
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Fast Idle System . . . . . . . . . . . . . . . . . . . . . . . . . .138 Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 189
Fixed Mast Antenna . . . . . . . . . . . . . . . . . . . . . 103
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 92
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Fluid Automatic Transmission . . . . . . . . . . 186, 189
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Power Steering . . . . . . . . . . . . . . . . . . . . . . . . 196
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Forward Collision Alert (FCA) System . . . . .154
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Front Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Front Turn Signal Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 202
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Economy, Driving for Better . . . . . . . . . . . 126
Filling a Portable Fuel Container . . . . . . . 160 Fuel (cont'd)
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 158
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 158
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Low Fuel Warning Light . . . . . . . . . . . . . . . . 80
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 158
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 158
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 236
Fuses Engine Compartment Fuse Block . . . . . . . 206
Floor Console Fuse Block . . . . . . . . . . . . . . . 210
Fuses and Circuit Breakers . . . . . . . . . . . . . 205
G
GaugesEngine Coolant Temperature . . . . . . . . . . . . 73
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . 72
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Warning Lights and Indicators . . . . . . . . . . 70
General Information Service and Maintenance . . . . . . . . . . . . . . 250
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160