2021 CHEVROLET COLORADO Duramax Diesel Supplement

Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
80 Service and Maintenance
Maintenance Records
After the scheduled services are performed, record the date, odometer reading, who performed the service, and the type of services performed
in the boxes provided. Retain all maintenance receipts.Date Odometer Reading Serviced By Services Performed

Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
Technical Data 81
Technical Data
Vehicle Data
Capacities and Specifications . . . . . . . . . . . 82
Engine Drive Belt Routing . . . . . . . . . . . . . . 84

Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
82 Technical Data
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants078.
Application Capacities
Metric English
Engine Cooling System (Pickup Models)
2.8L 4-Cylinder Engine 10.5 L 11.1 qt
Engine Cooling System (2.8L 4-Cylinder Van Models) Front Heater Core without Fuel Operated Heater (FOH) 13.7 L 14.4 qt
Front Heater Core with Fuel Operated Heater (FOH) 13.9 L 14.7 qt
Front and Rear Heater Core without Fuel Operated Heater (FOH) 15.8 L 16.7 qt
Front and Rear Heater Core with Fuel Operated Heater (FOH) 16.0 L 16.9 qt
Diesel Exhaust Fluid (DEF) Tank* 2.8L 4-Cylinder Pickup Models (LWN) 20.4 L 5.4 gal
2.8L 4-Cylinder Van Models (LWN) 21.0 L 5.5 gal

Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
Technical Data 83
ApplicationCapacities
Metric English
Engine Oil with Filter
2.8L 4-Cylinder Engine 5.6 L 6.0 qt
*Do not overfill the DEF tank. See Diesel Exhaust Fluid022.
All quantities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this manual. Recheck fluid level
after filling.
Engine cooling system capacity values are based on the entire cooling system and its components.
Engine Specifications
Engine VIN CodeType
2.8L 4-Cylinder Turbo Diesel (LWN Engine) 1L4

Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
84 Technical Data
Engine Drive Belt Routing
2.8L 4-Cylinder Engine (Pickup)
2.8L 4-Cylinder Engine (Van)

Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
Index 85
IndexA
Accessories and Modifications . . . . . . . . . . . . .52
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . . 58
Appearance CareExterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 58
B
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
BrakeExhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
C
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . . . . . . . . . 82
CheckEngine Light (Malfunction Indicator) . . . . . 9
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . . 4
Cold Weather Operation . . . . . . . . . . . . . . . . . . .27
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Covers Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
D
DieselStarting Your Engine . . . . . . . . . . . . . . . . . . . . . 13
Diesel Exhaust Fluid . . . . . . . . . . . . . . . . . . . . . . .22
Diesel Exhaust Fluid (DEF) Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Diesel Particulate Filter . . . . . . . . . . . . . . . . . . . .19
Drive Belt Routing, Engine . . . . . . . . . . . . . . . . 84
Driver Information Center (DIC) . . . . . . . . . . . 10
E
Electrical System Engine Compartment Fuse Block . . . . . . . . 64
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . 58
Check Light (Malfunction Indicator) . . . . . . 9
Compartment Overview . . . . . . . . . . . . . . . . . 53
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . 60
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . . 84
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . . 58
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . . 8
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Starting Your Diesel . . . . . . . . . . . . . . . . . . . . . 13
Engines Diesel Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Exhaust Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
86 Index
Exhaust FluidDiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
F
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Replacement (Fuel) . . . . . . . . . . . . . . . . . . . . . 30
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . . 58
Fluid Automatic Transmission . . . . . . . . . . . . . . . . 58
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Cold Weather Operation . . . . . . . . . . . . . . . . 27
Diesel Engines . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Filling a Portable Fuel Container . . . . . . . . 34
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . 32
Filter Replacement . . . . . . . . . . . . . . . . . . . . . . 30
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Operated Heater (FOH) . . . . . . . . . . . . . . . . . 19
Running out of Fuel . . . . . . . . . . . . . . . . . . . . 30
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Water in Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Fuel for Diesel Engines . . . . . . . . . . . . . . . . . . . . .25
Fuses Engine Compartment Fuse Block . . . . . . . . 64
G
Gauges
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . . 8
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Information
Service and Maintenance . . . . . . . . . . . . . . . 72
H
HeaterEngine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fuel Operated . . . . . . . . . . . . . . . . . . . . . . . . . . 19
I
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
L
LampsMalfunction Indicator (Check Engine) . . . . 9
Lights Check Engine (Malfunction Indicator) . . . . 9
Diesel Exhaust Fluid (DEF) . . . . . . . . . . . . . . 10
Power Take-off . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Wait to Start . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
M
Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Maintenance Schedule . . . . . . . . . . . . . . . . . 73, 77 Maintenance Schedule (cont'd)
Recommended Fluids and Lubricants . . . . 78
Malfunction Indicator Lamp . . . . . . . . . . . . . . . . 9
O
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Engine Oil Life System . . . . . . . . . . . . . . . . . . 58
Engine Oil Pressure Gauge . . . . . . . . . . . . . . . 8
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . . 62
P
Parking Over Things That Burn . . . . . . . . . . . . . . . . . . 19
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Take-Off (PTO) . . . . . . . . . . . . . . . . . . . . . .37
Power Take-Off Light . . . . . . . . . . . . . . . . . . . . . 10
R
Recommended Fluids and Lubricants . . . . . . 78
Records Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Replacement Parts Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Routing, Engine Drive Belt . . . . . . . . . . . . . . . . 84
Running out of Fuel . . . . . . . . . . . . . . . . . . . . . . 30

Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
Index 87
S
ServiceAccessories and Modifications . . . . . . . . . . 52
Maintenance Records . . . . . . . . . . . . . . . . . . . 80
Maintenance, General Information . . . . . . 72
Specifications and Capacities . . . . . . . . . . . . . . 82
Starting the Diesel Engine . . . . . . . . . . . . . . . . . 13
Supplement Using . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
T
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
TowingTrailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Trailer
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Transmission Fluid, Automatic . . . . . . . . . . . . . . . . . . . . . . . . 58
U
Using This Supplement . . . . . . . . . . . . . . . . . . . . .2
V
VehicleCanadian Owners . . . . . . . . . . . . . . . . . . . . . . . . . 1
Personalization . . . . . . . . . . . . . . . . . . . . . . . . . . 11
W
Wait to Start Light . . . . . . . . . . . . . . . . . . . . . . . 10
Water in Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Winter Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16