overheating CHEVROLET BLAZER 2020 User Guide

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
264 Vehicle Care
To activate the fill and air removal
process:1. With a cold system, add coolant to the indicated mark
on the surge tank.
2. Replace the cap on the surge tank.
3. Connect the vehicle to a battery charger.
4. Turn the ignition to Service Mode. See Ignition Positions
0 178.
5. Turn off the air conditioning.
6. Set the parking brake.
7. At the same time, press the accelerator and the brake for
two seconds, then release.
At the end of the cycle, check the
coolant level in the surge tank and
add coolant if it is low. Turn off the
vehicle, allow the Electronic Control
Module (ECM) to go to sleep, about
two minutes, and repeat Steps 4–7.
Listen for pump activation and
movement of the control valves
while watching the level of the coolant in the surge tank. If the tank
empties, turn the ignition off,
carefully remove the surge tank cap,
refill to the indicated mark, and
repeat Steps 4–7. The fill and air
removal process will run for
approximately 10 minutes.
Engine Overheating
The vehicle has several indicators
to warn of the engine overheating.
There is an engine coolant
temperature gauge on the
instrument cluster. See
Engine
Coolant Temperature Gauge 0116.
The vehicle may also display a
message on the Driver Information
Center (DIC).
If the decision is made not to lift the
hood when this warning appears,
get service help right away. See
Roadside Assistance Program
0 359.
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. Have the vehicle
serviced.
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 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,
(Continued)

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
284 Vehicle Care
FusesUsage
F54 External object calculating/Side
blind zone alert
F55 –
F56 Universal remote/ Rain sensor
F57 Alarm overhead console/Theft
deterrent
Circuit
Breakers Usage
CB1 –
CB2 –
CB3 Rear auxiliary power outlet
Relays Usage
K1 –
K2 –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 0174.
(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 Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
292 Vehicle Care
{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.
.Poor handling.
.Rough ride.
.Needless damage from
road hazards. The Tire and Loading
Information label on the vehicle
indicates the original equipment
tires and the correct cold tire
inflation pressures. The
recommended pressure is the
minimum air pressure needed to
support the vehicle's maximum
load carrying capacity. See
Vehicle Load Limits
0174.
How the vehicle is loaded
affects vehicle handling and ride
comfort. Never load the vehicle
with more weight than it was
designed to carry.
When to Check
Check the pressure of the tires
once a month or more. Do not
forget the compact spare, if the
vehicle has one. The cold
compact spare tire pressure
should be at 420 kPa (60 psi).
See Compact Spare Tire 0320. How to Check
Use a good quality pocket-type
gauge to check tire pressure.
Proper tire inflation cannot be
determined by looking at the tire.
Check the tire inflation pressure
when the tires are cold, meaning
the vehicle has not been driven
for at least three hours or no
more than 1.6 km (1 mi).
Remove the valve cap from the
tire valve stem. Press the tire
gauge firmly onto the valve to
get a pressure measurement.
If the cold tire inflation pressure
matches the recommended
pressure on the Tire and
Loading Information label, no
further adjustment is necessary.
If the inflation pressure is low,
add air until the recommended
pressure is reached. If the
inflation pressure is high, press
on the metal stem in the center
of the tire valve to release air.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
Index 381
Driving (cont'd)Defensive . . . . . . . . . . . . . . . . . . . . . 163
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 163
Hill and Mountain Roads . . . . . . 171
If the Vehicle is Stuck . . . . . . . . . 173
Loss of Control . . . . . . . . . . . . . . . 165
Off-Road . . . . . . . . . . . . . . . . . . . . . 166
Off-Road Recovery . . . . . . . . . . . 165
Vehicle Load Limits . . . . . . . . . . . 174
Wet Roads . . . . . . . . . . . . . . . . . . . 170
Winter . . . . . . . . . . . . . . . . . . . . . . . . 172
Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 155
E
Electric Brake Boost . . . . . . . . . . . . 191
Electric Parking Brake . . . . . . . . . . 192
Electric Parking Brake Light . . . . 123
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 242
Electrical System Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 276
Fuses and Circuit Breakers . . . 275
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 279
Overload . . . . . . . . . . . . . . . . . . . . . 275 Electrical System (cont'd)
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 282
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 370
Engine Air Cleaner/Filter . . . . . . . . . . . . . 257
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 120
Compartment Overview . . . . . . . 248
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . .116
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 126
Cooling System . . . . . . . . . . . . . . . 259
Drive Belt Routing . . . . . . . . . . . . 354
Exhaust . . . . . . . . . . . . . . . . . . . . . . 186
Heater . . . . . . . . . . . . . . . . . . . . . . . . 182
Oil Life System . . . . . . . . . . . . . . . 255
Oil Pressure Light . . . . . . . . . . . . 127
Overheating . . . . . . . . . . . . . . . . . . 264
Power Messages . . . . . . . . . . . . . 136
Running While Parked . . . . . . . . 187
Starting . . . . . . . . . . . . . . . . . . . . . . . 180
Engine Air Filter Life System . . . . 257
Engine Oil Temperature Gauge . . . . . . . . . . .116
Entry Lighting . . . . . . . . . . . . . . . . . . . 151 Equipment, Towing . . . . . . . . . . . . . 237
Event Data Recorders . . . . . . . . . . 367
Exit Lighting . . . . . . . . . . . . . . . . . . . . 151
Extended Parking . . . . . . . . . . . . . . . 186
Extender, Seat Belt . . . . . . . . . . . . . . 58
Exterior Lamp Controls . . . . . . . . . 145
Exterior Lamps Off Reminder . . . 147
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 153
F
Filter,Engine Air Cleaner . . . . . . . . . . . 257
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 147
Flashers, Hazard Warning . . . . . . 149
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 306 Changing . . . . . . . . . . . . . . . . . . . . . 314
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 335
Fluid Automatic Transmission . . . . . . 256
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 267
Washer . . . . . . . . . . . . . . . . . . . . . . . 265
Folding Mirrors . . . . . . . . . . . . . . . . . . 30
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 215
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 365

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13557845) - 2020 - CRC - 3/24/20
Index 385
OutletsPower . . . . . . . . . . . . . . . . . . . . . . . . 102
Overheating, Engine . . . . . . . . . . . . 264
Overview Instrument Panel . . . . . . . . . . . . . . . . 5
P
ParkShifting Out of . . . . . . . . . . . . . . . . 185
Park Assist . . . . . . . . . . . . . . . . . . . . . 210
Parking Brake and P (Park)
Mechanism Check . . . . . . . . . . 269
Extended . . . . . . . . . . . . . . . . . . . . . 186
Over Things That Burn . . . . . . . 185
Parking or Backing Assistance Systems . . . . . . . . . . 210
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 119
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Passenger Sensing System . . . . . 66
Pedestrian Ahead Indicator . . . . . 125
Perchlorate Materials Requirements, California . . . . . . 245
Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 137 Power
Door Locks . . . . . . . . . . . . . . . . . . . . . 19
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Outlets . . . . . . . . . . . . . . . . . . . . . . . 102
Protection, Battery . . . . . . . . . . . . 152
Retained Accessory (RAP) . . . 184
Seat Adjustment . . . . . . . . . . . . . . . . 42
Windows . . . . . . . . . . . . . . . . . . . . . . . 34
Pregnancy, Using Seat Belts . . . . 58
Privacy Vehicle Data Recording . . . . . . . 367
Program Courtesy Transportation . . . . . . 361
Prohibited Fuels . . . . . . . . . . . . . . . . 226
Proposition 65 Warning,
California . . . . . . . . . . . .244, 268, 321,
Back Cover
Publication Ordering Information . . . . . . . . . . . . . . . . . . . . 364
R
Radio Frequency Statement . . . . 365
Reading Lamps . . . . . . . . . . . . . . . . . 150
Rear Camera Mirror . . . . . . . . . . . . . 32
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 49Heated . . . . . . . . . . . . . . . . . . . . . . . . . 51
Rear Storage . . . . . . . . . . . . . . . . . . . . 92 Rear Vision Camera (RVC) . . . . . 210
Rear Window Washer/Wiper . . . . 101
Rearview Mirrors . . . . . . . . . . . . . . . . 31
Automatic Dimming . . . . . . . . . . . . . 31
Reclining Seatbacks . . . . . . . . . . . . . 43
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 348
Records Maintenance . . . . . . . . . . . . . . . . . . 350
Recreational Vehicle Towing . . . . 324
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 359
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . . 15
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 71
Maintenance . . . . . . . . . . . . . . . . . . 349
Replacing Airbag System . . . . . . . . 71
Replacing LATCH System
Parts after a Crash . . . . . . . . . . . . . 85
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . 59
Reporting Safety Defects Canadian Government . . . . . . . . 366
General Motors . . . . . . . . . . . . . . . 366