2009 CHEVROLET EXPRESS overheating

WARNING: (Continued)
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 fire, and you could be burned.
Get any leak fixed before you drive the vehicle.
Notice:Using coolant other than DEX-COOL may
cause premature engine, heater core, radiator and
fuel operated heater (FOH) 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.
Engine Coolant
The cooling system in the vehicle is filled with
DEX-COOL®engine coolant. This coolant is designed
to remain in the vehicle for five years or 150,000 miles
(240 000 km), whichever occurs first.
The following explains the cooling system and how to
check and add coolant when it is low. If there is a problem
with engine overheating, seeEngine Overheating on
page 6-35.
6-29

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.
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
Engine Overheating
If your vehicle has the DURAMAX Diesel engine, see
the DURAMAX Diesel manual for more information.
The vehicle has an indicator to warn of engine
overheating.
You will find an engine coolant temperature gage on
your vehicle’s instrument panel. SeeEngine Coolant
Temperature Gage on page 4-29for more information.You may decide not to lift the hood when this warning
appears, but instead get service help right away.
SeeRoadside Assistance Program on page 8-8.
If you do decide to lift the hood, make sure the vehicle
is parked on a level surface.
Then check to see if the engine cooling fans are
running. If the engine is overheating, both fans should
be running. If they are not, do not continue to run
the engine and have the vehicle serviced.
See if the engine cooling fan speed increases 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 the engine
without coolant is not covered by the warranty.
Notice:If the engine catches re because of being
driven with no coolant, your vehicle can be badly
damaged. The costly repairs would not be covered
by the vehicle warranty.
6-35

Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and where
to obtain service, see your vehicle Warranty
booklet for details. For additional information
refer to the tire manufacturer.
{WARNING:
Poorly maintained and improperly used tires
are dangerous.
•Overloading your vehicle’s tires can
cause overheating as a result of too
much flexing. You could have an air-out
and a serious accident. SeeLoading the
Vehicle on page 5-19.
WARNING: (Continued)
WARNING: (Continued)
•
Underinflated tires pose the same danger
as overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be
checked when your vehicle’s tires are
cold. SeeInation - Tire Pressure on
page 6-68.
•Overinflated tires are more likely to be
cut, punctured, or broken by a sudden
impact — such as when you hit a pothole.
Keep tires at the recommended pressure.
•Worn, old tires can cause accidents.
If the tire’s tread is badly worn, or if your
vehicle’s tires have been damaged,
replace them.
6-60

Engine (cont.)
Coolant Heater............................................3-25
Coolant Temperature Gage...........................4-29
Cooling System...........................................6-28
Drive Belt Routing.......................................7-15
Exhaust.....................................................3-40
Fan Noise..................................................6-37
Fast Idle System.........................................3-25
Oil .............................................................6-15
Overheating................................................6-35
Starting......................................................3-23
Engine Oil
Life System................................................6-18
Enhanced Technology Glass.............................3-19
Entry/Exit Lighting...........................................4-13
Event Data Recorders.....................................8-18
Extender, Safety Belt.......................................2-29
Exterior Lamps................................................. 4-9
F
Fast Idle System............................................3-25
Filter
Engine Air Cleaner......................................6-20
Finish Damage.............................................6-108
Fixed Mast Antenna........................................4-78
Flashers, Hazard Warning.................................. 4-3Flash-to-Pass................................................... 4-5
Flat Tire........................................................6-85
Flat Tire, Changing.........................................6-86
Flat Tire, Storing...........................................6-100
Fluid
Automatic Transmission........................6-21, 6-24
Power Steering...........................................6-38
Windshield Washer......................................6-39
Front Axle......................................................6-50
Fuel............................................................... 6-5
Additives...................................................... 6-7
California Fuel.............................................. 6-6
E85 (85% Ethanol)........................................ 6-8
Filling a Portable Fuel Container....................6-12
Filling the Tank...........................................6-10
Fuels in Foreign Countries.............................. 6-9
Gage .........................................................4-35
Gasoline Octane........................................... 6-6
Gasoline Specifications.................................. 6-6
Fuel Economy
Driving for Better.........................................1-18
Fuses
Engine Compartment Fuse Block.................6-112
Floor Console Fuse Block...........................6-111
Fuses and Circuit Breakers.........................6-110
Windshield Wiper.......................................6-110
5