2006 CHEVROLET TRAIL BLAZER heater

If the coolant inside the coolant recovery tank is boiling,
do not do anything else until it cools down. The
vehicle should be parked on a level surface.
The coolant level should
be at least up to the FULL
COLD mark. If it is not,
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 does not, 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.
5-34

How to Add Coolant to the Coolant
Recovery Tank
If you have not found a problem yet, but the coolant
level is not at the FULL COLD mark, add a
50/50 mixture of clean, drinkable water and DEX-COOL
®
engine coolant at the coolant recovery tank. See
Engine Coolant on page 5-28for 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.
When the coolant in the coolant recovery tank is at the
FULL COLD mark, start your vehicle.
5-35

Collision Damage Repair..................................7-10
Comfort Guides, Rear Safety Belt.....................1-30
Competitive Driving.........................................4-19
Content Theft-Deterrent....................................2-17
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-61
Coolant
Engine Temperature Gage............................3-42
Heater, Engine............................................2-23
Cooling System..............................................5-33
Cruise Control................................................3-11
Cruise Control Light........................................3-47
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 Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors....7-14
Reporting Safety Defects to
the Canadian Government.........................7-14
Reporting Safety Defects to the
United States Government.........................7-13
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-14D
Daytime Running Lamps..................................3-14
Displacement on Demand™ (DoD™).................2-24
Doing Your Own Service Work........................... 5-4
Dome Lamp Override......................................3-17
Dome Lamps .................................................3-16
Door
Delayed Locking........................................... 2-9
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-12
Driver
Position, Safety Belt.....................................1-20
Driver Information Center (DIC).........................3-50
DIC Operation and Displays..........................3-51
DIC Vehicle Customization............................3-61
DIC Warnings and Messages........................3-55
Driving
At Night.....................................................4-32
City ...........................................................4-36
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-37
Hill and Mountain Roads..............................4-40
4

Driving (cont.)
In Rain and on Wet Roads...........................4-34
Off-Road ....................................................4-20
Recovery Hooks..........................................4-47
Rocking Your Vehicle to Get it Out.................4-46
Winter........................................................4-42
Dual Automatic Climate Control System.............3-22
Dual Climate Control System............................3-19
DVD
Rear Seat Entertainment System..................3-124
E
Electrical System
Add-On Equipment.....................................5-108
Engine Compartment Fuse Block.................5-109
Fuses and Circuit Breakers.........................5-109
Headlamps...............................................5-108
Power Windows and Other Power Options....5-108
Rear Underseat Fuse Block.........................5-115
Windshield Wiper Fuses.............................5-108Electronically Controlled Air Suspension System....4-58
Engine
Air Cleaner/Filter.........................................5-24
Battery.......................................................5-44
Change Engine Oil Light...............................3-46
Check and Service Engine Soon Light............3-42
Coolant......................................................5-28
Coolant Heater............................................2-23
Coolant Temperature Gage...........................3-42
Engine Compartment Overview......................5-12
Exhaust.....................................................2-34
Fan Noise..................................................5-38
Oil .............................................................5-18
Oil Life System...........................................5-23
Overheating................................................5-31
Reduced Power Light...................................3-47
Starting......................................................2-21
Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-17
Extender, Safety Belt.......................................1-33
5

H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-9
Headlamps....................................................3-13
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-53
Daytime Running Lamps...............................3-14
Electrical System.......................................5-108
Flash-to-Pass............................................... 3-8
Halogen Bulbs............................................5-53
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-14
Heated Seats................................................... 1-5
Heater...........................................................3-19
Heater...........................................................3-22
Highbeam On Light.........................................3-47
Highway Hypnosis...........................................4-39
Hill and Mountain Roads..................................4-40
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn ............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-20
I
Ignition Positions.............................................2-20
Infants and Young Children, Restraints...............1-36
Ination - Tire Pressure...................................5-64
Instrument Panel
Overview..................................................... 3-4
Instrument Panel (I/P)
Brightness..................................................3-16
Cluster.......................................................3-31
J
Jump Starting.................................................5-45
K
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
7