2004 CHEVROLET BLAZER heater

When the engine is cold, the coolant level should be at
least up to the ADD mark. If it isn’t, you may have a
leak at the pressure cap or in the radiator hoses, heater
hoses, radiator, water pump or somewhere else in
the cooling system.
{CAUTION:
Heater and radiator hoses, and other engine
parts, can be very hot. Do not touch them.
If you do, you can be burned.
Do not run the engine if there is a leak.
If you run the engine, it could lose all coolant.
That could cause an engine re, and you
could be burned. Get any leak xed before
you drive the vehicle.
If there seems to be no leak, start the engine again.
The engine cooling fan speed should increase when idle
speed is doubled by pushing the accelerator pedal
down. If it doesn’t, your vehicle needs service. Turn off
the engine.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-30

How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but the coolant level
isn’t at the ADD mark, add a 50/50 mixture ofclean,
drinkable waterand DEX-COOL
®engine coolant at the
coolant recovery tank. SeeEngine Coolant on
page 5-24for more information.
{CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid such as alcohol, can boil before the
proper coolant mixture will. Your vehicle’s
coolant warning system is set for the proper
coolant mixture. With plain water or the wrong
mixture, your engine could get too hot but
you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice:In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mixture.
{CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
5-31

Coolant
Engine Temperature Gage............................3-29
Heater, Engine............................................2-22
Cooling.........................................................3-18
Cooling System..............................................5-29
Cruise Control.................................................. 3-9
Current and Past Model Order Forms................7-12
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone
(TTY) Users.............................................. 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-5
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the Canadian
Government............................................7-11
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-14
Defensive Driving............................................. 4-3
Defogging and Defrosting.................................3-19
Dinghy Towing................................................4-47Directing the Airow........................................3-18
Doing Your Own Service Work........................... 5-3
Dolly Towing (Two-Wheel Drive Vehicles)...........4-52
Dolly Towing (Vehicles with Automatic
Transfer Case)............................................4-49
Dolly Towing (Vehicles with Electronic
Transfer Case)............................................4-50
Dome Lamps.................................................3-16
Door
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks.............................2-10
Driver
Position, Safety Belt.....................................1-13
Driver Behavior................................................ 4-2
Driver Information Center (DIC).........................2-54
Driving
At Night.....................................................4-30
City...........................................................4-35
Defensive..................................................... 4-3
Drunken....................................................... 4-4
Environment................................................. 4-2
Freeway.....................................................4-36
Hill and Mountain Roads..............................4-38
In Rain and on Wet Roads...........................4-32
Winter........................................................4-40
Driving Across an Incline..................................4-26
Driving Downhill..............................................4-24
Driving in Mud, Sand, Snow or Ice....................4-28
4

Driving in Water..............................................4-29
Driving On Grades..........................................4-69
Driving on Off-Road Hills.................................4-19
Driving on Snow or Ice....................................4-41
Driving Through Deep Standing Water...............4-34
Driving Through Flowing Water.........................4-34
Driving Uphill..................................................4-21
Driving with a Trailer.......................................4-67
E
Electrical System
Add-On Equipment......................................5-98
Fuses and Circuit Breakers...........................5-99
Headlamps.................................................5-98
Power Windows and Other Power Options......5-98
Windshield Wiper Fuses...............................5-98
Electronic Transfer Case..................................2-29
Emergency Release for Opening Tailgate...........2-15
Emissions Inspection and Maintenance
Programs...................................................3-32
Engine
Air Cleaner/Filter.........................................5-17
Battery.......................................................5-42
Check and Service Engine Soon Light............3-30
Coolant......................................................5-24
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-29
Cooling System Inspection............................6-31Engine (cont.)
Drive Belt Routing.......................................6-36
Engine Compartment Overview......................5-12
Exhaust.....................................................2-40
Fan Noise..................................................5-36
Oil .............................................................5-13
Overheating................................................5-27
Starting......................................................2-20
Engine Compartment Fuse Block.....................5-101
Engine Coolant Level Check.............................6-26
Engine Oil Additives........................................5-16
Engine Oil Level Check...................................6-26
Engine Specications...................................5-103
Engine Speed Control.....................................2-21
Entry Lighting.................................................3-15
Environmental Concerns..................................4-17
Erasing HomeLink
®Buttons..............................2-48
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-16
Express Down Window....................................2-12
Extender, Safety Belt.......................................1-30
Exterior Lamps...............................................3-12
F
Filter
Engine Air Cleaner......................................5-17
Finding a Program Type (PTY)
Station.......................................3-44, 3-53, 3-64
5

Storage Areas (cont.)
Front Storage Area......................................2-56
Glove Box..................................................2-49
Luggage Carrier..........................................2-57
Overhead Console.......................................2-49
Rear Convenience System............................2-60
Rear Storage Area.......................................2-59
Storing a Flat or Spare Tire and Tools...............5-85
Stuck in Sand, Mud, Ice or Snow......................4-44
Sun Visors.....................................................2-16
Sunglasses Storage Compartment.....................2-53
Sunroof.........................................................2-62
Swing-Out Windows........................................2-13
T
Tachometer....................................................3-24
Tailgate Release.............................................2-14
Tailgate-Mounted Spare...................................2-16
Taillamps.......................................................5-54
Temperature and Compass Display....................2-52
Testing the Alarm............................................2-17
Theft-Deterrent, Radio.....................................3-72
Theft-Deterrent Systems...................................2-16
Content Theft-Deterrent................................2-16
Passlock
®...................................................2-18
Throttle System Inspection...............................6-32
Tilt Wheel........................................................ 3-5
Time Delay....................................................2-43Tire Ination Check.........................................6-26
Tire Sidewall Labeling......................................5-58
Tire Size.......................................................5-63
Tire Terminology and Denitions........................5-64
Tires.............................................................5-57
Buying New Tires........................................5-70
Chains.......................................................5-74
Changing a Flat Tire....................................5-76
Compact Spare Tire.....................................5-88
If a Tire Goes Flat.......................................5-75
Ination - Tire Pressure................................5-67
Inspection and Rotation................................5-68
Spare Tire..................................................5-89
Uniform Tire Quality Grading.........................5-71
Wheel Alignment and Tire Balance.................5-72
Wheel Replacement.....................................5-73
When It Is Time for New Tires......................5-70
Matching Transmitter(s) to Your Vehicle............... 2-6
To Use the Engine Coolant Heater....................2-22
Top Strap......................................................1-41
Top Strap Anchor Location...............................1-43
Torque Lock...................................................2-38
Total Weight on Your Vehicle’s Tires..................4-65
Tow/Haul Mode...............................................2-26
Tow/Haul Mode Light.......................................3-35
Towing
Recreational Vehicle.....................................4-46
Towing a Trailer..........................................4-60
Your Vehicle...............................................4-46
Trailer Brakes.................................................4-66
14