Section 7 Service and Appearance Care
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Accessories and Modifications . . . . . . . . . . . . . . . . . . 7-4
California Proposition 65 Warning . . . . . . . . . . . . . . . 7-5
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Doing Your Own Service Work . . . . . . . . . . . . . . . . . . 7-5
Adding Equipment to the Outside of the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Fuel E85 (85% Ethanol) . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 7-9
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Filling a Portable Fuel Container . . . . . . . . . . . . . . . 7-12
Checking Things Under the Hood . . . . . . . . . . . . . . .7-12
Hood Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
Engine Compartment Overview . . . . . . . . . . . . . . . . 7-14
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . 7-20 Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . 7-22
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
Engine Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33
Overheated Engine Protection
Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35
Engine Fan Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35
Power Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . 7-37
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-38
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-41
Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-47
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-48
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-50
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-53
High Intensity Discharge (HID) Lighting . . . . . . . . 7-53
Taillamps, Turn Signal, Sidemarker, Stoplamps and Back-up Lamps . . . . . . . . . . . . . . . . . . . . . . . . . 7-53
License Plate Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55
Replacement Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55
7-1
experiences problems due to dirty injectors or valves,
look for gasoline that is advertised as TOP TIER
Detergent Gasoline.
For customers who do not use TOP TIER Detergent
Gasoline regularly, one bottle of GM Fuel System
Treatment PLUS, added to the fuel tank at every engine
oil change, can help clean deposits from fuel injectors
and intake valves. GM Fuel System Treatment PLUS is
the only gasoline additive recommended by General
Motors.
Also, your dealer/retailer has additives that will help
correct and prevent most deposit‐related problems.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines might be available
in your area. We recommend that you use these
gasolines, if they comply with the specifications
described earlier. However, E85 (85% ethanol) and
other fuels containing more than 10% ethanol must not
be used in vehicles that were not designed for those
fuels.
Notice:This vehicle was not designed for fuel that
contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in the fuel
system and also damage plastic and rubber parts.
That damage would not be covered under the
vehicle warranty. Some gasolines that are not reformulated for low
emissions can contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. We recommend against
the use of such gasolines. Fuels containing MMT can
reduce the life of spark plugs and the performance of
the emission control system could be affected. The
malfunction indicator lamp might turn on. If this occurs,
return to your dealer/retailer for service.
Fuel E85 (85% Ethanol)
This vehicle can use either unleaded gasoline or
85% ethanol fuel (E85). We encourage the use of
E85 in vehicles that are designed to use it. The ethanol
in E85 is a
“renewable” fuel, meaning it is made from
renewable sources such as corn and other crops.
Many service stations will not have an 85% ethanol
fuel (E85) pump available. The U.S. Department
of Energy has an alternative fuels website
(www.eere.energy.gov/afdc/infrastructure/locator.html)
that can help you find E85 fuel. Those stations that do
have E85 should have a label indicating ethanol
content. Do not use the fuel if the ethanol content is
greater than 85%.
7-8
At a minimum, E85 should meet ASTM Specification
D 5798. By definition, this means that fuel labeled E85
will have an ethanol content between 70% and 85%.
Filling the fuel tank with fuel mixtures that do not meet
ASTM specifications can affect driveability and could
cause the malfunction indicator lamp to come on.
To ensure quick starts in the wintertime, the E85 fuel
must be formulated properly for your climate according
to ASTM specification D 5798. If you have trouble
starting on E85, it could be because the E85 fuel is not
properly formulated for your climate. If this happens,
switching to gasoline or adding gasoline to the fuel tank
can improve starting. For good starting and heater
efficiency below 0°C (32°F), the fuel mix in the fuel tank
should contain no more than 70% ethanol. It is best not
to alternate repeatedly between gasoline and E85.
If you do switch fuels, it is recommended that you add
as much fuel as possible—do not add less than
11 L (three gallons) when refueling. You should drive
the vehicle immediately after refueling for at least
11 km (seven miles) to allow the vehicle to adapt to the
change in ethanol concentration.
E85 has less energy per gallon than gasoline, so you
will need to refill the fuel tank more often when using
E85 than when you are using gasoline. See Filling the
Tank on page 7‑10. Notice:
Some additives are not compatible with
E85 fuel and can harm the vehicle's fuel system.
Do not add anything to E85. Damage caused by
additives would not be covered by the vehicle
warranty.
Notice: This vehicle was not designed for fuel that
contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in the fuel
system and also damage plastic and rubber parts.
That damage would not be covered under the
vehicle warranty.
Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel might be hard
to find. Never use leaded gasoline or any other fuel not
recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel would not be
covered by the vehicle warranty.
To check the fuel availability, ask an auto club,
or contact a major oil company that does business in
the country where you will be driving.
7-9
Engine Oil Additives / Engine Oil
Flushes
Do not add anything to the oil. The recommended oils
with the starburst symbol that meet GM standards 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.
See
DIC Warnings and Messages
on page 4‑48.
Change the oil as soon as possible within the next
600 miles (1 000 km). 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 3,000 miles (5 000 km) since the last oil
change. Remember to reset the oil life system
whenever the oil is changed.
7-18
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.
See Recommended Fluids and Lubricants
on
page 8‑10for more information.
7-28
Engine (cont.)Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
Overheated Protection Operating Mode . . . . . . . . . . 7-35
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Entry/Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Event Data Recorders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19
Extender, Safety Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Exterior Cargo Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Exterior Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
F
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Filter Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
Finish Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-103
Fixed Mast Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-90
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-78
Flat Tire, Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-79
Flat Tire, Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-92 Fluid
Automatic Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
Power Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Windshield Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37
Fog Lamps Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6 Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
E85 (85% Ethanol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . 7-12
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Gage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Management, Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35
Fuel Economy Driving for Better . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Fuses Center Instrument Panel Fuse Block . . . . . . . . . . . . .7-107
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . . .7-105
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . .7-105
Underhood Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . .7-108
Windshield Wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-105
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