2007 CHEVROLET COLORADO coolant level

Notice:
When using concentrated washer uid,
follow the manufacturer’s instructions
for adding water.
Do not mix water with ready-to-use washer
uid. Water can cause the solution to
freeze and damage your washer uid tank
and other parts of the washer system.
Also, water does not clean as well
as washer uid.
Fill the washer uid tank only
three-quarters full when it is very cold.
This allows for uid expansion if freezing
occurs, which could damage the tank if
it is completely full.
Do not use engine coolant (antifreeze) in
your windshield washer. It can damage
the vehicle’s windshield washer system
and paint.
Brakes
Brake Fluid
The brake master
cylinder reservoir is
lled with DOT-3 brake
uid. SeeEngine
Compartment Overview
on page 332for the
location of the reservoir.
There are only two reasons why the brake uid
level in the reservoir might go down. The rst
is that the brake uid goes down to an acceptable
level during normal brake lining wear. When
new linings are put in, the uid level goes back
up. The other reason is that uid is leaking out
of the brake system. If it is, you should have
the brake system xed, since a leak means that
sooner or later the brakes will not work well.
357

When the CHANGE OIL message appears,
certain services, checks, and inspections are
required. Required services are described in the
following for “MaintenanceI” and “MaintenanceII.”
Generally, it is recommended that your rst
service be MaintenanceI, your second service
be MaintenanceII, and that you alternate
MaintenanceIand MaintenanceIIthereafter.
However, in some cases, MaintenanceIImay
be required more often.MaintenanceI— Use MaintenanceIif the
CHANGE OIL message comes on within
10 months since the vehicle was purchased
or MaintenanceIIwas performed.
MaintenanceII— Use MaintenanceIIif the
previous service performed was MaintenanceI.
Always use MaintenanceIIwhenever the
message comes on 10 months or more since
the last service or if the message has not
come on at all for one year.
Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 333. Reset oil life system.
SeeEngine Oil Life System on page 336.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (g).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine
Air Cleaner/Filter on page 338.See footnote (j).•
Rotate tires and check ination pressures and wear. SeeTire Inspection
and Rotation on page 390and “Tire Wear Inspection” inAt Least Once
a Month on page 448.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid
as needed.••
443

Lubricate hood safety lever pivot and prop rod
pivot and tailgate latch bolt, handle assembly pivot
points, and hinges. More frequent lubrication
may be required when exposed to a corrosive
environment. Applying silicone grease on
weatherstrips with a clean cloth will make them
last longer, seal better, and not stick or squeak.
(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/retailer perform this service. See
Engine Coolant on page 345 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 452.
447

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 333for
further details.
Notice:It is important to check the engine
oil regularly and keep it at the proper
level. Failure to keep the engine oil at
the proper level can cause damage to the
engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary.
SeeEngine Coolant on page 345for
further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in
the windshield washer uid reservoir and
add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not
forget to check the spare tire. SeeInation - Tire
Pressure on page 384. Check to make sure
the spare tire is stored securely. SeeChanging
a Flat Tire on page 400.
Tire Wear Inspection
Tire rotation may be required for high mileage
highway drivers prior to the Engine Oil Life
System service notication. Check the tires for
wear and, if necessary, rotate the tires. See
Tire Inspection and Rotation on page 390.
448