2008 CHEVROLET EXPRESS CARGO VAN coolant temperature

6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine cooling fan.
7. By this time, the coolant level inside the radiator
filler neck may be lower. If the level is lower, add
more of the proper DEX-COOL
®coolant mixture
through the filler neck until the level reaches
the base of the filler neck.
8. Then replace the pressure cap. At any time during
this procedure if coolant begins to flow out of the
filler neck, reinstall the pressure cap.
Engine Fan Noise
Your vehicle has a clutched engine cooling fan. When
the clutch is engaged, the fan spins faster to provide
more air to cool the engine. In most everyday driving
conditions, the fan is spinning slower and the clutch is
not fully engaged. This improves fuel economy and
reduces fan noise. Under heavy vehicle loading, trailer
towing, and/or high outside temperatures, the fan
speed increases as the clutch more fully engages, so
you may hear an increase in fan noise. This is
normal and should not be mistaken as the transmission
slipping or making extra shifts. It is merely the cooling
system functioning properly. The fan will slow down
when additional cooling is not required and the clutch
partially disengages.
You may also hear this fan noise when you start the
engine. It will go away as the fan clutch partially
disengages.
5-34

Windshield Washer Fluid
What to Use
When you need windshield washer fluid, be sure to read
the manufacturer’s instructions before use. If you will
be operating your vehicle in an area where the
temperature may fall below freezing, use a fluid that has
sufficient protection against freezing.
Adding Washer Fluid
Open the cap with the
washer symbol on it. Add
washer fluid until the
tank is full. SeeEngine
Compartment Overview on
page 5-14for reservoir
location.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.
5-36

(g)Vehicles with Gross Vehicle Weight Rating (GVWR)
above 10,000 lbs (4 536 kg) only: Inspect shields for
damage or looseness. Adjust or replace as required.
This is a Noise Emission Control Service. Applicable to
vehicles sold in the United States and recommended
for vehicles sold in Canada.
(h)Change automatic transmission fluid and filter 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, flush, and refill cooling system. This service
can be complex; you should have your dealer/retailer
perform this service. See Engine Coolant on page 5-24
for what to use. Inspect hoses. Clean radiator,
condenser, pressure cap, and filler neck. Pressure test
the cooling system and pressure cap.
(j)A fluid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired and
the fluid level checked. Add fluid if needed.(k)Inspect system. Check all fuel and vapor lines and
hoses for proper hook-up, routing, and condition. Check
that the purge valve works properly, if equipped.
Replace as needed.
(l)If you drive regularly under dusty conditions, inspect
the filter at each engine oil change.
(m)Check system for interference or binding and for
damaged or missing parts. Replace parts as needed.
Replace any components that have high effort or
excessive wear. Do not lubricate accelerator or cruise
control cables.
(n)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 specified to help ensure the safety,
dependability, and emission control performance of your
vehicle. Your dealer/retailer can assist you with these
checks and services.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-13.
6-9

Child Restraints (cont.)
Securing a Child Restraint in the Right
Front Seat Position...........................1-48, 1-52
Where to Put the Restraint...........................1-38
Cigarette Lighter.............................................3-19
Cleaning
Aluminum Wheels......................................5-104
Exterior Lamps/Lenses................................5-103
Fabric/Carpet............................................5-101
Finish Care...............................................5-103
Instrument Panel, Vinyl, and Other Plastic
Surfaces...............................................5-101
Interior.......................................................5-99
Tires........................................................5-105
Underbody Maintenance.............................5-106
Washing Your Vehicle.................................5-102
Weatherstrips............................................5-102
Windshield and Wiper Blades......................5-104
Climate Control System...................................3-19
Outlet Adjustment........................................3-22
Rear Air Conditioning and Heating System......3-23
Rear Heating System...................................3-22
Clock, Setting.................................................3-68
Collision Damage Repair..................................7-11
Compass.......................................................3-50
Control of a Vehicle.......................................... 4-3
Coolant
Engine Temperature Gage............................3-36
Heater, Engine............................................2-23Cooling System..............................................5-29
Cruise Control................................................3-11
Cruise Control Light........................................3-42
Customer Assistance Information
Courtesy Transportation.................................. 7-9
Customer Assistance for Text
Telephone (TTY) Users............................... 7-5
Customer Assistance Offices........................... 7-5
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-6
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...................................7-14
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-15
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Delayed Locking............................................... 2-7
DIC Compass.................................................3-50
Disc, MP3......................................................3-81
Doing Your Own Service Work........................... 5-4
Dome Lamp Override......................................3-17
Dome Lamps.................................................3-17
3

Door
60/40 Swing-Out Side Door...........................2-10
Automatic Door Lock..................................... 2-8
Automatic Door Unlock.................................. 2-8
Cargo Door Relocking.................................... 2-7
Delayed Locking........................................... 2-7
Locks.......................................................... 2-6
Power Door Locks......................................... 2-7
Programmable Automatic Door Locks............... 2-7
Rear Door Security Locks............................... 2-8
Rear Doors.................................................2-12
Sliding Side Door.......................................... 2-9
Driver Information Center (DIC).........................3-44
DIC Operation and Displays..........................3-45
DIC Vehicle Customization............................3-60
DIC Warnings and Messages........................3-52
Driving
At Night.....................................................4-12
Before a Long Trip......................................4-14
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Highway Hypnosis.......................................4-14
Hill and Mountain Roads..............................4-15
In Rain and on Wet Roads...........................4-13
Rocking Your Vehicle to Get it Out.................4-20
Winter........................................................4-16
Dual Tire Operation.........................................5-65E
EDR .............................................................7-16
Electrical System
Add-On Equipment.....................................5-109
Engine Compartment Fuse Block.................5-112
Floor Console Fuse Block...........................5-110
Fuses and Circuit Breakers.........................5-109
Headlamp Wiring.......................................5-109
Windshield Wiper Fuses.............................5-109
Engine
Air Cleaner/Filter.........................................5-20
Check and Service Engine Soon Light............3-38
Coolant......................................................5-24
Coolant Heater............................................2-23
Coolant Temperature Gage...........................3-36
Drive Belt Routing.......................................6-16
Engine Compartment Overview......................5-14
Exhaust.....................................................2-31
Fan Noise..................................................5-34
Fuel Regulator............................................2-23
Oil .............................................................5-15
Oil Life System...........................................5-18
Overheating................................................5-27
Running While Parked..................................2-32
Starting......................................................2-21
Entry/Exit Lighting...........................................3-17
Event Data Recorders.....................................7-17
Extender, Safety Belt.......................................1-28
Exterior Lamps...............................................3-14
4

F
Filter
Engine Air Cleaner......................................5-20
Finish Damage.............................................5-106
Fixed Mast Antenna........................................3-88
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-81
Flat Tire, Changing.........................................5-82
Flat Tire, Storing.............................................5-97
Fluid.............................................................5-21
Power Steering...........................................5-35
Windshield Washer......................................5-36
Front Axle......................................................5-48
Fuel............................................................... 5-5
Additives...................................................... 5-7
California Fuel.............................................. 5-6
E85 (85% Ethanol)........................................ 5-8
Filling a Portable Fuel Container....................5-12
Filling the Tank...........................................5-10
Fuels in Foreign Countries.............................. 5-9
Gage.........................................................3-43
Gasoline Octane........................................... 5-6
Gasoline Specifications.................................. 5-6
Regulator...................................................2-23
Fuses
Engine Compartment Fuse Block.................5-112
Floor Console Fuse Block...........................5-110Fuses (cont.)
Fuses and Circuit Breakers.........................5-109
Windshield Wiper.......................................5-109
G
Gage
Engine Coolant Temperature.........................3-36
Fuel..........................................................3-43
Oil Pressure...............................................3-41
Speedometer..............................................3-27
Voltmeter Gage...........................................3-34
Gasoline
Octane........................................................ 5-6
Specifications............................................... 5-6
Glass, Enhanced Technology............................2-17
GM Mobility Reimbursement Program.................. 7-6
H
Hazard Warning Flashers................................... 3-6
Headlamp Wiring...........................................5-109
Headlamps....................................................5-50
Bulb Replacement.......................................5-50
Daytime Running Lamps...............................3-15
Exterior Lamps............................................3-14
Flash-to-Pass............................................... 3-9
Front Turn Signal, Sidemarker and
Parking Lamps.........................................5-52
5