2006 CHEVROLET COLORADO coolant temperature

When to Check and What to Use
Refer to the Maintenance Schedule to determine how
often you should check the uid level in your clutch
master cylinder reservoir and for the proper uid. See
Recommended Fluids and Lubricants on page 6-12.
How to Check and Add Fluid
The proper uid should be added if the level does not
reach the bottom of the diaphragm when it is in place in
the reservoir. See the instructions on the reservoir cap.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for ve years or 150,000 miles
(240 000 km), whichever occurs rst, if you add only
DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, seeEngine Overheating on
page 5-27.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
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 the rst maintenance
service after each 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.
5-24

Engine Overheating
You will nd a coolant temperature gage on your
vehicle’s instrument panel. SeeEngine Coolant
Temperature Gage on page 3-32.
Your air conditioning may stop working if your engine
is too hot. This is normal and helps cool the engine.
If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can burn you
badly, even if you just open the hood. Stay away
from the engine if you see or hear steam coming
from it. Just turn it off and get everyone away
from the vehicle until it cools down. Wait until
there is no sign of steam or coolant before you
open the hood.
If you keep driving when your engine is
overheated, the liquids in it can catch re.
You or others could be badly burned. Stop
your engine if it overheats, and get out of the
vehicle until the engine is cool.Notice:If your engine catches re because you keep
driving with no coolant, your vehicle can be badly
damaged. The costly repairs would not be covered by
your warranty.
If No Steam Is Coming From
Your Engine
If you get an engine overheat warning but see or hear no
steam, the problem may not be too serious. Sometimes
the engine can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high-speed driving.
Idle for long periods in traffic.
Tow a trailer. See “Driving on Grades” under
Towing a Trailer on page 4-56.
5-27

(g)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the uid level checked. Add uid if needed.
(h)Change automatic transmission uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.
(i)Drain, ush, and rell cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-24 for
what to use. Inspect hoses. Clean radiator, condenser,
pressure cap, and ller neck. Pressure test the
cooling system and pressure cap.
(j)If you drive regularly under dusty conditions, inspect
the lter at each engine oil change.
(k)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability, and emission control performance of your
vehicle. Your GM Goodwrench
®dealer can assist you
with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-13for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
6-8

Climate Control System...................................3-19
Outlet Adjustment........................................3-21
Clutch, Hydraulic.............................................5-23
Collision Damage Repair..................................7-11
Comfort Guides, Rear Safety Belt.....................1-31
Compass.......................................................2-37
Content Theft-Deterrent....................................2-15
Control of a Vehicle.......................................... 4-5
Coolant
Engine Temperature Gage............................3-32
Heater, Engine............................................2-20
Cooling System..............................................5-28
Cruise Control................................................3-11
Cruise Control Light........................................3-36
Cupholder(s)..................................................2-42
Customer Assistance Information
Courtesy Transportation.................................. 7-8
Customer Assistance for
Text Telephone (TTY) Users........................ 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-6
Reporting Safety Defects to General Motors.......7-15
Reporting Safety Defects to
the Canadian Government.........................7-14
Reporting Safety Defects to
the United States Government...................7-14
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-15D
Daytime Running Lamps..................................3-15
Daytime Running Lamps Indicator Light.............3-37
Doing Your Own Service Work........................... 5-4
Dome Lamp ...................................................3-17
Dome Lamp Override......................................3-17
Door
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks............................... 2-9
Rear Doors.................................................. 2-9
Driver
Position, Safety Belt.....................................1-18
Driver Information Center (DIC).........................3-38
DIC Controls and Displays............................3-38
DIC Warnings and Messages........................3-41
Driving
At Night.....................................................4-28
City ...........................................................4-32
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-33
Hill and Mountain Roads..............................4-36
In Rain and on Wet Roads...........................4-30
Off-Road ....................................................4-15
Recovery Hooks..........................................4-43
Rocking Your Vehicle to Get it Out.................4-42
Winter........................................................4-38
4

E
Electrical System
Add-On Equipment......................................5-98
Engine Compartment Fuse Block...................5-99
Fuses and Circuit Breakers...........................5-99
Windshield Wiper Fuses...............................5-98
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-39
Check and Service Engine Soon Light............3-32
Coolant......................................................5-24
Coolant Heater............................................2-20
Coolant Temperature Gage...........................3-32
Engine Compartment Overview......................5-12
Exhaust.....................................................2-34
Fan Noise..................................................5-33
Oil .............................................................5-13
Oil Life System...........................................5-16
Overheating................................................5-27
Starting......................................................2-19
Event Data Recorders (EDR)............................7-10
Exit Lighting...................................................3-18
Extender, Safety Belt.......................................1-34
Exterior Cargo Lamps......................................3-17
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-18
Finish Damage...............................................5-95
Fixed Mast Antenna........................................3-77
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-68
Flat Tire, Changing.........................................5-68
Flat Tire, Storing.............................................5-84
Fluid
Automatic Transmission................................5-19
Manual Transmission....................................5-22
Power Steering...........................................5-33
Windshield Washer......................................5-34
Fog Lamps ....................................................3-16
Four-Wheel Drive....................................2-26, 5-44
Front Armrest Storage Area..............................2-43
Front Axle......................................................5-45
Front Turn Signal, Parking and
Daytime Running Lamps...............................5-48
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
5

Fuel (cont.)
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage .........................................................3-37
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Fuses
Engine Compartment Fuse Block...................5-99
Fuses and Circuit Breakers...........................5-99
Windshield Wiper.........................................5-98
G
Gage
Engine Coolant Temperature.........................3-32
Fuel..........................................................3-37
Speedometer..............................................3-24
Tachometer.................................................3-24
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-42
GM Mobility Reimbursement Program.................. 7-6
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamps....................................................5-47
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-46
Daytime Running Lamps...............................3-15
Flash-to-Pass............................................... 3-9
Halogen Bulbs............................................5-46
High/Low Beam Changer................................ 3-9
On Reminder..............................................3-15
Heated Seats................................................... 1-4
Heater...........................................................3-19
Highbeam On Light.........................................3-36
Highway Hypnosis...........................................4-35
Hill and Mountain Roads..................................4-36
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn ............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-18
Hydraulic Clutch.............................................5-23
6