2023 CHEVROLET BLAZER radiator

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16401961) - 2023 - CRC - 5/17/22
258 Vehicle Care
Caution
If the air cleaner/filter is off, dirt can
easily get into the engine, which could
damage it. Always have the air cleaner/
filter in place when driving.
Cooling System
The cooling system allows the engine to
maintain the correct working temperature.
2.0L L4 Engine
1. Engine Cooling Fan (Out of View)
2. Engine Coolant Surge Tank andPressure Cap
3.6L V6 Engine
1. Engine Cooling Fan (Out of View)
2. Engine Coolant Surge Tank andPressure Cap
{Warning
An underhood electric fan can start up
even when the engine is not running and
can cause injury. Keep hands, clothing,
and tools away from any underhood
electric fan.
{Warning
Do not touch heater or radiator hoses,
or other engine parts. They can be very
hot and can burn you. Do not run the
engine if there is a leak; all coolant could
leak out. That could cause an engine fire
and can burn you. Fix any leak before
driving the vehicle.
Engine Coolant
The cooling system in the vehicle is filled
with DEX-COOL engine coolant. This coolant
needs to be checked and replaced at
appropriate intervals. See Maintenance
Schedule 0317.
The following explains the cooling system
and how to check and add coolant when it
is low. If there is a problem with engine
overheating, see Engine Overheating 0261.
What to Use
{Warning
Do not touch heater or radiator hoses,
or other engine parts. They can be very
hot and can burn you. Do not run the
(Continued)

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16401961) - 2023 - CRC - 5/17/22
260 Vehicle Care
{Warning
Plain water, or other liquids such as
alcohol, can boil before the proper
coolant mixture will. With plain water or
the wrong mixture, the engine could get
too hot but there would not be an
overheat warning. The engine could catch
fire and you or others could be burned.
Caution
Failure to follow the specific coolant fill
procedure could cause the engine to
overheat and could cause system
damage. If coolant is not visible in the
surge tank, contact your dealer.
If no problem is found, check to see if
coolant is visible in the coolant surge tank.
If coolant is visible but the coolant level is
not at or above the indicated mark, add a
50/50 mixture of clean, drinkable water and
DEX-COOL coolant. Be sure the cooling
system, including the coolant surge tank
pressure cap, is cool before you do it.
3.6L V6 Engine Only
1. Remove the coolant surge tank pressure cap when the cooling system, including
the coolant surge tank pressure cap and
upper radiator hose, is no longer hot.
Turn the pressure cap slowly
counterclockwise about one-quarter of a
turn. If you hear a hiss, wait for that to
stop. This will allow any pressure still
left to be vented out the discharge hose.
2. Keep turning the pressure cap slowly and remove it.
3. Fill the coolant surge tank with theproper mixture to the indicated
level mark.
4. With the coolant surge tank pressure cap off, start the engine and let it run until
you can feel the upper radiator hose
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 indicated
level mark.
5. Replace the pressure cap tightly.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16401961) - 2023 - CRC - 5/17/22
Index 355
ParkingBrake and P (Park) Mechanism
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Over Things That Burn . . . . . . . . . . . . . . . . . 198
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . . . . . . 218
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . 100
Compartment Air Filter . . . . . . . . . . . . . . . . . 177
Sensing System . . . . . . . . . . . . . . . . . . . . . . . . . 57
Pedestrian Ahead Indicator . . . . . . . . . . . . . . 105
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Phone Apple CarPlay and Android Auto . . . . . . . 158
Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . 154, 155
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Protection, Battery . . . . . . . . . . . . . . . . . . . . . 124
Retained Accessory (RAP) . . . . . . . . . . . . . . 196
Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 37 Power (cont'd)
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . . 51
Privacy Vehicle Data Recording . . . . . . . . . . . . . . . . 338
Problems with Route Guidance . . . . . . . . . . 148
Program Courtesy Transportation . . . . . . . . . . . . . . . 334
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . 233
Proposition 65 Warning California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Proposition 65 Warning, California . . . . . . . 301
Publication Ordering Information . . . . . . . . 336
R
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Radio
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Data System (RDS) . . . . . . . . . . . . . . . . . . . . . 133
Frequency Statement . . . . . . . . . . . . . . . . . . 337
HD Radio Technology . . . . . . . . . . . . . . . . . . 132
Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Cross Traffic Alert (RCTA) System . . . . . . 223
Heated Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Rear (cont'd)
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Vision Camera (RVC) . . . . . . . . . . . . . . . . . . . 219
Window Washer/Wiper . . . . . . . . . . . . . . . . . 87
Rearview Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . .27 Automatic Dimming . . . . . . . . . . . . . . . . . . . . 27
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . .37
Recognition Voice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Recommended Fluids and Lubricants . . . . . . 321
Records Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Recreational Vehicle Towing . . . . . . . . . . . . . 305
Reimbursement Program, GM
Mobility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Remote Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Key Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Vehicle Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Replacing
Airbag System . . . . . . . . . . . . . . . . . . . . . . . . . . 62
LATCH System Parts After a Crash . . . . . . 74