2020 CHEVROLET COLORADO overheating

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 10/4/19
Vehicle Care 239
1. Turn the pressure cap slowlycounterclockwise. If a hiss is
heard, wait for that to stop.
A hiss means there is still
some pressure left.
2. Keep turning the cap and remove it.
3. Fill the coolant surge tank withthe proper mixture to the mark
pointed to on the front of the
coolant surge tank.
4. With the coolant surge tank cap off, start the engine and let
it run until the upper radiator
hose starts getting hot. Watch
out for the engine cooling fan.
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
mixture to the coolant surge
tank until the level reaches the
mark pointed to on the front of
the coolant surge tank.
5. Replace the cap tightly.
6. Verify coolant level after the engine is shut off and the
coolant is cold. If necessary,
repeat coolant fill procedure
Steps 1–6.Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the
cap is properly and tightly
secured.
Engine Overheating
The vehicle has an engine coolant
temperature gauge on the
instrument cluster to warn of engine
overheating. See Engine Coolant
Temperature Gauge 0103.
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all
coolant and can damage the
system and vehicle. Have any
leaks fixed right away.
If the decision is made not to lift the
hood when this warning appears,
get service help right away.

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 10/4/19
240 Vehicle Care
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.
Then check to see if the engine
cooling fan is running. If the engine
is overheating, the fan should be
running. If it is not, do not continue
to run the engine and have the
vehicle serviced.
If Steam Is Coming from the
Engine Compartment
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
If No Steam Is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
. Stops after high-speed driving.
. Idles for long periods in traffic.
If the overheat warning is displayed
with no sign of steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the
highest fan speed. Open the
windows as necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or
N (Neutral), and let the
engine idle.
If the engine coolant temperature
gauge is no longer in the overheat
zone, the vehicle can be driven.
Continue to drive the vehicle slowly for about 10 minutes. Keep a safe
distance from the vehicle in front.
If the warning does not come back
on, continue to drive normally and
have the cooling system checked
for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Engine Fan
If the vehicle has a clutched engine
cooling fan, when the clutch is
engaged, the fan spins faster to
provide more air to cool the engine.
In most everyday driving conditions,
the fan is spinning slower and the
clutch is not fully engaged. This
improves fuel economy and reduces
fan noise. Under heavy vehicle
loading, trailer towing, and/or high
outside temperatures, the fan speed
increases as the clutch more fully
engages, so an increase in fan

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 10/4/19
Vehicle Care 261
RelaysUsage
K2 Run/Crank
K3 –Wheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer. See
the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much
flexing. There could be a
blowout and a serious
crash. See Vehicle Load
Limits 0153.
(Continued)
Warning (Continued)
.Underinflated tires pose
the same danger as
overloaded tires. The
resulting crash could
cause serious injury.
Check all tires frequently
to maintain the
recommended pressure.
Tire pressure should be
checked when the tires
are cold.
.Overinflated tires are
more likely to be cut,
punctured, or broken by
a sudden impact —such
as when hitting a pothole.
Keep tires at the
recommended pressure.
.Worn or old tires can
cause a crash. If the
tread is badly worn,
replace them.
(Continued)

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 10/4/19
268 Vehicle Care
Speed Rating:An
alphanumeric code assigned to
a tire indicating the maximum
speed at which a tire can
operate.
Traction
:The friction between
the tire and the road surface.
The amount of grip provided.
Tread
:The portion of a tire that
comes into contact with
the road.
Treadwear Indicators
:Narrow
bands, sometimes called wear
bars, that show across the tread
of a tire when only 1.6 mm (1/
16 in) of tread remains. See
When It Is Time for New Tires
0 276.
UTQGS (Uniform Tire Quality
Grading Standards)
:A tire
information system that provides
consumers with ratings for a
tire's traction, temperature, and
treadwear. Ratings are
determined by tire
manufacturers using government testing procedures.
The ratings are molded into the
sidewall of the tire. See
Uniform
Tire Quality Grading 0279.
Vehicle Capacity Weight
:The
number of designated seating
positions multiplied by
68 kg (150 lb) plus the rated
cargo load. See Vehicle Load
Limits 0153.
Vehicle Maximum Load on the
Tire
:Load on an individual tire
due to curb weight, accessory
weight, occupant weight, and
cargo weight.
Vehicle Placard
:A label
permanently attached to a
vehicle showing the vehicle
capacity weight and the original
equipment tire size and
recommended inflation pressure.
See “Tire and Loading
Information Label” underVehicle
Load Limits 0153.
Tire Pressure
Tires need the correct amount of
air pressure to operate
effectively.
{Warning
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can result in:
.Tire overloading and
overheating, which could
lead to a blowout.
.Premature or
irregular wear.
.Poor handling.
.Reduced fuel economy.
Overinflated tires, or tires that
have too much air, can
result in:
.Unusual wear.
(Continued)

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
Index 359
Driving (cont'd)Winter . . . . . . . . . . . . . . . . . . . . . . . . 151
E
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 220
Electrical System Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 253
Fuses and Circuit Breakers . . . 253
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 258
Overload . . . . . . . . . . . . . . . . . . . . . 252
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 348
Engine Air Cleaner/Filter . . . . . . . . . . . . . 234
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 106
Compartment Overview . . . . . . . 227
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 103
Cooling System . . . . . . . . . . . . . . . 236
Drive Belt Routing . . . . . . . . . . . . 332
Exhaust . . . . . . . . . . . . . . . . . . . . . . 167
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Heater . . . . . . . . . . . . . . . . . . . . . . . . 163
Oil Life System . . . . . . . . . . . . . . . 232 Engine (cont'd)
Oil Pressure Light . . . . . . . . . . . . . 111
Overheating . . . . . . . . . . . . . . . . . . 239
Power Messages . . . . . . . . . . . . . 120
Running While Parked . . . . . . . . 167
Starting . . . . . . . . . . . . . . . . . . . . . . . 162
Entry Lighting . . . . . . . . . . . . . . . . . . . 130
Equipment, Towing . . . . . . . . . . . . . 212
Event Data Recorders . . . . . . . . . . 345
Exit Lighting . . . . . . . . . . . . . . . . . . . . 130
Extender, Seat Belt . . . . . . . . . . . . . . 42
Exterior Cargo Lamps . . . . . . . . . . 128
Exterior Lamp Controls . . . . . . . . . 124
Exterior Lamps Off Reminder . . . 125
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 131
F
Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . 240
Filter, Engine Air Cleaner . . . . . . . . . . . 234
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 125
Flashers, Hazard Warning . . . . . . 127
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 282 Changing . . . . . . . . . . . . . . . . . . . . . 284
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 311 Fluid
Automatic Transmission . . . . . . 234
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 242
Four-Wheel Drive
Transfer Case . . . . . . . . . . . . . . . 173
Washer . . . . . . . . . . . . . . . . . . . . . . . 241
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 128
Folding Mirrors . . . . . . . . . . . . . . . . . . 22
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 195
Four-Wheel Drive . . . . . . . . . . 173, 244
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 343
Front Axle . . . . . . . . . . . . . . . . . . . . . . 245 Locking . . . . . . . . . . . . . . . . . . . . . . . 187
Front Fog Lamp
Light . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 29
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 32
Fuel
Additives . . . . . . . . . . . . . . . . . . . . . 199
Economy, Driving for Better . . . 141
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 201
Filling the Tank . . . . . . . . . . . . . . . 200
Foreign Countries . . . . . . . . . . . . 199
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 102

Chevrolet Colorado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13566640) - 2020 - CRC - 9/30/19
362 Index
Lower Anchors and Tethersfor Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 63
Lumbar Adjustment . . . . . . . . . . . . . . 30 Front Seats . . . . . . . . . . . . . . . . . . . . . 30
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 328
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . 322
Maintenance Schedule . . . . . . . . . 315
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 325
Transfer Case . . . . . . . . . . . . . . . . 173
Malfunction Indicator Lamp . . . . . 106
Manual Mirrors . . . . . . . . . . . . . . . . . . 21
Manual Mode . . . . . . . . . . . . . . . . . . . 171
Messages Engine Power . . . . . . . . . . . . . . . . 120
Vehicle . . . . . . . . . . . . . . . . . . . . . . . .119
Vehicle Speed . . . . . . . . . . . . . . . . 120
Mirrors Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 24
Blind Spot . . . . . . . . . . . . . . . . . . . . . . 22
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 21
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 22 Mirrors (cont'd)
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 22
Manual . . . . . . . . . . . . . . . . . . . . . . . . . 21
Manual Rearview . . . . . . . . . . . . . . . 23
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Mirrors, Interior Rearview . . . . . . . . 23
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Driver Control . . . . . . . . . . . . . . . . . 185
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 269
N
NavigationConnected Services . . . . . . . . . . 353
New Vehicle Break-In . . . . . . . . . . . 159
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 101 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 145 Driving . . . . . . . . . . . . . . . . . . . . . . . . 145
Recovery . . . . . . . . . . . . . . . . . . . . . 144
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 230
Engine Oil Life System . . . . . . . 232
Pressure Light . . . . . . . . . . . . . . . . . 111
Older Children, Restraints . . . . . . . 56
Online Owner Center . . . . . . . . . . . 336
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 346 OnStar Additional
Information . . . . . . . . . . . . . . . . . . . . 349
OnStar Emergency . . . . . . . . . . . . . 348
OnStar Overview . . . . . . . . . . . . . . . 347
OnStar Security . . . . . . . . . . . . . . . . 349
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 128
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Overheating, Engine . . . . . . . . . . . . 239
Overview Instrument Panel . . . . . . . . . . . . . . . . 5
P
ParkShifting Out of . . . . . . . . . . . . . . . . 166
Park Assist . . . . . . . . . . . . . . . . . . . . . 192
Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 181
Brake and P (Park)Mechanism Check . . . . . . . . . . 246
Over Things That Burn . . . . . . . 166
Parking or Backing Assistance Systems . . . . . . . . . . 192
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 104
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 139