2007 CHEVROLET EXPRESS oil temperature

Backing Up
Hold the bottom of the steering wheel with one hand.
Then, to move the trailer to the left, move that hand
to the left. To move the trailer to the right, move your
hand to the right. Always back up slowly and, if possible,
have someone guide you.
Making Turns
Notice:Making very sharp turns while trailering
could cause the trailer to come in contact with the
vehicle. The vehicle could be damaged. Avoid
making very sharp turns while trailering.
When turning with a trailer, make wider turns than
normal. Do this so the trailer will not strike soft
shoulders, curbs, road signs, trees or other objects.
Avoid jerky or sudden maneuvers. Signal well in
advance.
Turn Signals When Towing a Trailer
The arrows on the instrument panel flash whenever
signaling a turn or lane change. Properly hooked up, the
trailer lamps also flash, telling other drivers the vehicle
is turning, changing lanes or stopping.When towing a trailer, the arrows on the instrument
panel flash for turns even if the bulbs on the trailer are
burned out. For this reason you may think other
drivers are seeing the signal when they are not. It is
important to check occasionally to be sure the
trailer bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gearbeforestarting
down a long or steep downgrade. If the transmission is
not shifted down, the brakes might have to be used so
much that they would get hot and no longer work well.
The vehicle can tow in D (Drive). Shift the transmission
to a lower gear if the transmission shifts too often
under heavy loads and/or hilly conditions.
When towing at high altitude on steep uphill grades,
consider the following: Engine coolant will boil at a lower
temperature than at normal altitudes. If the engine is
turned off immediately after towing at high altitude on
steep uphill grades, the vehicle may show signs similar to
engine overheating. To avoid this, let the engine run while
parked, preferably on level ground, with the automatic
transmission in P (Park) for a few minutes before turning
the engine off. If the overheat warning comes on, see
Engine Overheating on page 6-35.
5-40

What Kind of Engine Oil to Use
Look for three things:
•GM6094M
Use only an oil that meets GM Standard GM6094M.
•SAE 5W-30
SAE 5W-30 is best for the vehicle. These numbers
on an oil container show its viscosity, or thickness.
Do not use other viscosity oils such as SAE 20W-50.
•American Petroleum Institute (API) starburst symbol
Oils meeting these
requirements should have
the starburst symbol on the
container. This symbol
indicates that the oil has
been certified by the
American Petroleum
Institute (API).
Notice:Use only engine oil identied as meeting
GM Standard GM6094M and showing the American
Petroleum Institute Certied For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
the vehicle warranty.
Cold Temperature Operation
If in an area of extreme cold, where the temperature
falls below−20°F (−29°C), use either an SAE 5W-30
synthetic oil or an SAE 0W-30 engine oil. Both provide
easier cold starting for the engine at extremely low
temperatures. Always use an oil that meets the required
specification, GM6094M. See “What Kind of Engine
Oil to Use” for more information.
6-17

Engine Oil Additives / Engine Oil
Flushes
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM Standard
GM6094M are all that is needed for good performance
and engine protection.
Engine oil system flushes are not recommended and
could cause engine damage not covered by the vehicle
warranty.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system that indicates when
to change the engine oil and filter. This is based on
engine revolutions and engine temperature, and not on
mileage. Based on driving conditions, the mileage at
which an oil change is indicated can vary considerably.
For the oil life system to work properly, the system
must be reset every time the oil is changed.When the system has calculated that oil life has been
diminished, it indicates that an oil change is necessary.
A CHANGE ENGINE OIL SOON message comes on.
SeeDIC Warnings and Messages on page 4-44. Change
the oil as soon as possible within the next 1 000 km
(600 miles). It is possible that, if driving under the best
conditions, the oil life system might not indicate that an oil
change is necessary for over a year. However, the engine
oil and filter must be changed at least once a year and at
this time the system must be reset. Your dealer/retailer
has trained service people who will perform this work
using genuine parts and reset the system. It is also
important to check the oil regularly and keep it at the
proper level.
If the system is ever reset accidentally, the oil must be
changed at 5 000 km (3,000 miles) since the last oil
change. Remember to reset the oil life system whenever
the oil is changed.
6-18

How to Check Automatic Transmission
Fluid
Because this operation can be difficult, it is recommended
to have this check done at the dealer/retailer service
department, which can monitor the transmission
temperature. The transmission fluid level increases
with temperature. To obtain a highly accurate fluid level
check, the transmission temperature must be measured.
If it is decided to check the fluid level, be sure to follow
all the instructions here, or a false reading on the
dipstick may occur.
Notice:Too much or too little uid can damage
your transmission. Too much can mean that some
of the uid could come out and fall on hot engine
parts or exhaust system parts, starting a re.
Too little uid could cause the transmission to
overheat. Be sure to get an accurate reading if you
check your transmission uid.
Wait at least 30 minutes with the engine Off, before
checking the transmission fluid level if the vehicle has
been driven:
•In hot weather, when outside temperatures are
above 32°C (90°F).
•The vehicle is heavily loaded.
•At high speed for quite a while in hot weather.
•In heavy traffic and hot weather.
•While pulling a trailer.
After driving under these conditions, a hot check can
be performed. The fluid should be Hot, which is
71°C to 93°C (160°F to 200°F).
A cold fluid level check can be performed after the vehicle
has been sitting for eight hours or more with the engine
Off, but this is used only as a reference. Let the engine
run at idle for five minutes if outside temperatures is
between 15°C to 32°C (60°F to 90°F). Should the fluid
level be low during this cold check, the fluid must be
checked Warm or Hot before adding fluid. If the outside
temperature is colder than 15°C (60°F) or hotter than
32°C (90°F), a cold check cannot be performed.
A warm fluid level check can be performed by driving
the vehicle under lightly loaded conditions and outside
temperatures between 10°C to 27°C (50°F to 80°F).
The vehicle should be driven for at least 15 miles before
performing a warm check. Checking the fluid Warm or
Hot will give a more accurate reading of the fluid level
than a cold check.
Because the vehicle is equipped with a high-efficiency
air-to-oil cooler, the transmission fluid temperature
may not reach the required Hot fluid level checking
temperature under normal lightly loaded driving vehicle
conditions.
6-25

What to Use
{WARNING:
Adding only plain water to the cooling system can
be dangerous. Plain water, or some other liquid
such as alcohol, can boil before the proper coolant
mixture will. The vehicle’s coolant warning system
is set for the proper coolant mixture. With plain
water or the wrong mixture, the engine could get
too hot but you would not get the overheat
warning. The engine could catch fire and you or
others could be burned. Use a 50/50 mixture of
clean, drinkable water and DEX-COOL
®coolant.
Use a 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant. If using this mixture, nothing else
needs to be added. This mixture:
•Gives freezing protection down to−34°F (−37°C),
outside temperature.
•Gives boiling protection up to 265°F (129°C),
engine temperature.
•Protects against rust and corrosion.
•Will not damage aluminum parts.
•Helps keep the proper engine temperature.
Notice:If an improper coolant mixture is used,
the engine could overheat and be badly damaged.
The repair cost would not be covered by the vehicle
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core, and
other parts.
Notice:If extra inhibitors and/or additives are used
in the vehicle’s cooling system, the vehicle could
be damaged. Use only the proper mixture of
the engine coolant listed in this manual for the
cooling system. SeeRecommended Fluids and
Lubricants on page 7-12for more information.
6-30

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

G
Gages
Engine Coolant Temperature.........................4-29
Fuel..........................................................4-35
Oil Pressure...............................................4-33
Speedometer..............................................4-22
Trip Odometer.............................................4-22
Voltmeter Gage...........................................4-27
Gasoline
Octane........................................................ 6-6
Specifications............................................... 6-6
Glass, Enhanced Technology............................3-19
GM Mobility Reimbursement Program.................. 8-7
H
Halogen Bulbs................................................6-53
Hazard Warning Flashers................................... 4-3
Head Restraints............................................... 2-2
Headlamp Wiring...........................................6-110
Headlamps....................................................6-53
Bulb Replacement.......................................6-53
Daytime Running Lamps (DRL).....................4-10
Exterior Lamps............................................. 4-9
Flash-to-Pass............................................... 4-5Headlamps (cont.)
Front Turn Signal, Sidemarker and Parking
Lamps ....................................................6-55
High/Low Beam Changer................................ 4-5
On Reminder..............................................4-10
Heater...........................................................4-15
Engine Coolant...........................................3-25
Highbeam On Light.........................................4-35
Highway Hypnosis...........................................5-14
Hill and Mountain Roads..................................5-15
Hood
Checking Things Under................................6-12
Release.....................................................6-13
Horn ............................................................... 4-3
How to Wear Safety Belts Properly...................2-15I
Ignition Positions.............................................3-22
Infants and Young Children, Restraints...............2-33
Inflation - Tire Pressure...................................6-68
Instrument Panel
Brightness..................................................4-11
Cluster.......................................................4-21
Introduction...................................................... 7-2
6