2021 CHEVROLET EXPRESS CARGO engine oil

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
Service and Maintenance 253
Maintenance Schedule Additional
Required Services - Normal12 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)@@@
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 - Normal
(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.
(6) Or every 12 months, whichever comes
first. See Wiper Blade Replacement 0201.
(7) Replace air conditioning desiccant every
seven years.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
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-
14583525) - 2021 - CRC - 12/9/20
Service and Maintenance 255
(6)Or every 12 months, whichever comes
first. See Wiper Blade Replacement 0201.
(7) Replace air conditioning desiccant every
seven years.
Special Application Services
.Vehicles with Dual Wheels: Check dual
wheel nut torque at 160, 1 600, and
10 000 km (100, 1,000, and 6,000 mi) of
driving. Repeat this service whenever a
tire/wheel is serviced or removed.
.Severe Commercial Use Vehicles Only:
Lubricate chassis components every oil
change.
.Have underbody flushing service
performed. See “Underbody Maintenance”
in Exterior Care 0242.
Additional Maintenance
and Care
Your vehicle is an important investment and
caring for it properly may help to avoid
future costly repairs. To maintain vehicle
performance, additional maintenance
services may be required. It is recommended that your dealer perform
these services
—their trained dealer
technicians know your vehicle best. Your
dealer can also perform a thorough
assessment with a multi-point inspection to
recommend when your vehicle may need
attention.
The following list is intended to explain the
services and conditions to look for that may
indicate services are required.
Battery
The 12-volt battery supplies power to start
the engine and operate any additional
electrical accessories.
.To avoid break-down or failure to start
the vehicle, maintain a battery with full
cranking power.
.Trained dealer technicians have the
diagnostic equipment to test the battery
and ensure that the connections and
cables are corrosion-free.
Belts
.Belts may need replacing if they squeak
or show signs of cracking or splitting.
.Trained dealer technicians have access to
tools and equipment to inspect the belts
and recommend adjustment or
replacement when necessary. Brakes
Brakes stop the vehicle and are crucial to
safe driving.
.Signs of brake wear may include chirping,
grinding, or squealing noises, or difficulty
stopping.
.Trained dealer technicians have access to
tools and equipment to inspect the brakes
and recommend quality parts engineered
for the vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See Recommended Fluids and
Lubricants 0257 for GM approved fluids.
.Engine oil and windshield washer fluid
levels should be checked at every fuel fill.
.Instrument cluster lights may come on to
indicate that fluids may be low and need
to be filled.
Hoses
Hoses transport fluids and should be
regularly inspected to ensure that there are
no cracks or leaks. With a multi-point
inspection, your dealer can inspect the hoses
and advise if replacement is needed.

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
258 Service and Maintenance
Maintenance Replacement Parts
If the vehicle has the Duramax diesel engine, see the Duramax diesel supplement.
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter
I4.3L V6 Engine 84065602 A3228C
I6.6L V8 Engine 84000015 A3221C
Engine Oil Filter I4.3L V6 Engine 12690385 PF63E
I6.6L V8 Engine 12690385 PF63E
Spark Plugs I4.3L V6 Engine 12622441 41-114
I6.6L V8 Engine 12622441 41-114
Wiper Blades –56.0 cm (22 in) 25949887 —

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583525) - 2021 - CRC - 12/9/20
262 Technical Data
ApplicationCapacities
Metric English
*Engine cooling system capacity values are based on the entire cooling system and its components.
Engine Oil with Filter
I4.3L V6 Engine 5.7 L 6.0 qt
I6.6L V8 Engine 7.7 L 8.0 qt
Fuel Tank ICutaway (Optional Tank)* 215.7 L 57.0 gal
ICutaway (Standard Tank) 121.1 L 32.0 gal
IPassenger and Cargo 117.3 L
31.0 gal
* 4 039 mm (159 in) wheelbase or 4 496 mm (177 in) wheelbase only
Wheel Nut Torque 190Y 140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level
after filling.

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

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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290 Index
Lights (cont'd)Airbag Readiness . . . . . . . . . . . . . . . . . . . . . . . 74
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Brake System Warning . . . . . . . . . . . . . . . . . 77
Charging System . . . . . . . . . . . . . . . . . . . . . . . 76
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . 80
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
High-Beam On . . . . . . . . . . . . . . . . . . . . . . . . . . 81
High/Low Beam Changer . . . . . . . . . . . . . . . 91
Lane Departure Warning . . . . . . . . . . . . . . . . 79
Low Fuel Warning . . . . . . . . . . . . . . . . . . . . . . 80
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . . 74
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . . 78
Traction Control System (TCS)/StabiliTrak . . . . . . . . . . . . . . . . . . . . . . 79
Locking Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . 148
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cargo Door Relocking . . . . . . . . . . . . . . . . . . . . 11
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 12
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Locks (cont'd)
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . . 12
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . . .128
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . 80
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . . . . . . . . .52
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . 251 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Malfunction Indicator Lamp . . . . . . . . . . . . . . . 76
Manual Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Manual Windows . . . . . . . . . . . . . . . . . . . . . . . . . .19
Media Avoiding Untrusted Devices . . . . . . . . . . . . 104
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 Mirrors
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Manual Rearview . . . . . . . . . . . . . . . . . . . . . . . 19
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Trailer Tow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mirrors, Interior Rearview . . . . . . . . . . . . . . . . . .19
Monitor System, Tire Pressure . . . . . . . . . . . .218
Multi-band Antenna . . . . . . . . . . . . . . . . . . . . . 104
N
Navigation Connected Services . . . . . . . . . . . . . . . . . . . . 282
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . . 135
Noise Control System . . . . . . . . . . . . . . . . . . . . 199
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Off-Road
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Engine Oil Life System . . . . . . . . . . . . . . . . . 186
Engine Oil Pressure Gauge . . . . . . . . . . . . . . 72
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Older Children, Restraints . . . . . . . . . . . . . . . . . 46