Section 7 Service and Appearance Care
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4Accessories and Modifications . . . . . . . . . . . . . . . . . . 7-4California Proposition 65 Warning . . . . . . . . . . . . . . . 7-5California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5Doing Your Own Service Work . . . . . . . . . . . . . . . . . . 7-6Adding Equipment to the Outside of theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 7-8California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9Fuel E85 (85% Ethanol) . . . . . . . . . . . . . . . . . . . . . . . . . 7-9Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . 7-10Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11Filling a Portable Fuel Container . . . . . . . . . . . . . . . 7-13
Checking Things Under the Hood. . . . . . . . . . . . . . . 7-14Hood Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15Engine Compartment Overview . . . . . . . . . . . . . . . . 7-16Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 7-20Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . 7-22
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . 7-24Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29Engine Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34Overheated Engine ProtectionOperating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37Engine Fan Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37Power Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 7-38Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . 7-39Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44
All-Wheel Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-49
Rear Axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-50
Front Axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-51
Headlamp Aiming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-52
Bulb Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-54High Intensity Discharge (HID) Lighting . . . . . . . . 7-54LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55Back-Up Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-55License Plate Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56Replacement Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-56
7-1
Many service stations will not have an 85% ethanol fuel(E85) pump available. The U.S. Department of Energyhas an alternative fuels website (www.eere.energy.gov/afdc/infrastructure/locator.html) that can help you findE85 fuel. Those stations that do have E85 should havea label indicating ethanol content. Do not use the fuel ifthe ethanol content is greater than 85%.
At a minimum, E85 should meet ASTM SpecificationD 5798. By definition, this means that fuel labeled E85will have an ethanol content between 70% and 85%.Filling the fuel tank with fuel mixtures that do not meetASTM specifications can affect driveability and couldcause the malfunction indicator lamp to come on.
To ensure quick starts in the wintertime, the E85 fuelmust be formulated properly for your climate accordingto ASTM specification D 5798. If you have troublestarting on E85, it could be because the E85 fuel is notproperly formulated for your climate. If this happens,switching to gasoline or adding gasoline to the fuel tankcan improve starting. For good starting and heaterefficiency below 0°C (32°F), the fuel mix in the fuel tankshould contain no more than 70% ethanol. It is best notto alternate repeatedly between gasoline and E85.If you do switch fuels, it is recommended that youadd as much fuel as possible—do not add less than11 L (three gallons) when refueling. You should drivethe vehicle immediately after refueling for at least11 km (seven miles) to allow the vehicle to adaptto the change in ethanol concentration.
E85 has less energy per gallon than gasoline, so youwill need to refill the fuel tank more often when usingE85 than when you are using gasoline. SeeFilling theTank on page 7!11.
Notice:Some additives are not compatible withE85 fuel and can harm the vehicle's fuel system.Do not add anything to E85. Damage caused byadditives would not be covered by the vehiclewarranty.
Notice:This vehicle was not designed for fuel thatcontains methanol. Do not use fuel containingmethanol. It can corrode metal parts in the fuelsystem and also damage plastic and rubber parts.That damage would not be covered under thevehicle warranty.
Fuels in Foreign Countries
If you plan on driving in another country outside theUnited States or Canada, the proper fuel might be hardto find. Never use leaded gasoline or any other fuel notrecommended in the previous text on fuel. Costlyrepairs caused by use of improper fuel would not becovered by the vehicle warranty.
To check the fuel availability, ask an auto club,or contact a major oil company that does business inthe country where you will be driving.
7-10
Checking Things Under
the Hood
{WARNING:
An electric fan under the hood can start up and
injure you even when the engine is not running.
Keep hands, clothing, and tools away from any
underhood electric fan.
{WARNING:
Things that burn can get on hot engine parts and
start a fire. These include liquids like fuel, oil,
coolant, brake fluid, windshield washer and other
fluids, and plastic or rubber. You or others could
be burned. Be careful not to drop or spill things
that will burn onto a hot engine.
7-14
A.Engine Air Cleaner/Filter on page 7!22.
B. Coolant Surge Tank and Pressure Cap.SeeCooling System on page 7!28.
C. Remote Positive (+) Terminal. SeeJump Startingon page 7!44.
D.Battery on page 7!43.
E. Engine Oil Fill Cap. See“When to Add Engine Oil”underEngine Oil on page 7!17.
F. Automatic Transmission Dipstick (Out of View).See“Checking the Fluid Level”underAutomaticTransmission Fluid on page 7!24.
G. Remote Negative (!) Terminal (GND) (Out ofView). SeeJump Starting on page 7!44.
H. Engine Oil Dipstick (Out of View). See“CheckingEngine Oil”underEngine Oil on page 7!17.
I. Engine Cooling Fan (Out of View). SeeCoolingSystem on page 7!28.
J. Power Steering Fluid Reservoir (Out of View).SeePower Steering Fluid on page 7!38.
K. Brake Master Cylinder Reservoir. See“BrakeFluid”underBrakes on page 7!40.
L.Underhood Fuse Block on page 7!111.
M. Windshield Washer Fluid Reservoir. See“AddingWasher Fluid”underWindshield Washer Fluidonpage 7!39.
Engine Oil
Checking Engine Oil
It is a good idea to check the engine oil level at eachfuel fill. In order to get an accurate reading, the oil mustbe warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop. SeeEngine Compartment Overviewon page 7!16for thelocation of the engine oil dipstick.
1. Turn off the engine and give the oil several minutesto drain back into the oil pan. If this is not done, theoil dipstick might not show the actual level.
2. Pull out the dipstick and clean it with a paper towelor cloth, then push it back in all the way. Remove itagain, keeping the tip down, and check the level.
7-17
Engine Oil Additives / Engine Oil
Flushes
Do not add anything to the oil. The recommended oilswith the starburst symbol that meet GM standards areall that is needed for good performance and engineprotection.
Engine oil system flushes are not recommended andcould cause engine damage not covered by the vehiclewarranty.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system that indicates whento change the engine oil and filter. This is based onengine revolutions and engine temperature, and not onmileage. Based on driving conditions, the mileage atwhich an oil change is indicated can vary considerably.For the oil life system to work properly, the system mustbe reset every time the oil is changed.
When the system has calculated that oil life has beendiminished, it indicates that an oil change is necessary.A CHANGE ENGINE OIL SOON message comes on.SeeDIC Warnings and Messageson page 4!48.Change the oil as soon as possible within the next600 miles (1 000 km). It is possible that, if driving underthe best conditions, the oil life system might not indicatethat an oil change is necessary for over a year.However, the engine oil and filter must be changed atleast once a year and at this time the system must bereset. Your dealer/retailer has trained service peoplewho will perform this work using genuine parts andreset the system. It is also important to check the oilregularly and keep it at the proper level.
If the system is ever reset accidentally, the oil must bechanged at 3,000 miles (5 000 km) since the last oilchange. Remember to reset the oil life systemwhenever the oil is changed.
7-20
Checking Coolant
The vehicle must be on a level surface when checkingthe coolant level.
Check to see if coolant is visible in the coolant surgetank. If the coolant inside the coolant surge tank isboiling, do not do anything else until it cools down.If coolant is visible but the coolant level is not at orabove the FULL COLD mark, add a 50/50 mixture ofclean, drinkable water and DEX-COOL®coolant at thecoolant surge tank, but be sure the cooling system iscool before this is done.
The coolant surge tank is located in the enginecompartment on the passenger side of the vehicle.SeeEngine Compartment Overviewon page 7!16formore information on location.
The coolant level should be at or above the FULLCOLD mark. If it is not, you may have a leak in thecooling system.
7-31
Checking Brake Fluid
Check brake fluid by looking at the brake fluid reservoir.SeeEngine Compartment Overview on page 7!16.
The fluid level should beabove MIN. If it is not,have the brake hydraulicsystem checked to see ifthere is a leak.
After work is done on the brake hydraulic system, makesure the level is above the MIN but not over theMAX mark.
What to Add
Use only new DOT 3 brake fluid from a sealedcontainer. SeeRecommended Fluids and Lubricantsonpage 8!10.
Always clean the brake fluid reservoir cap and the areaaround the cap before removing it. This helps keep dirtfrom entering the reservoir.
{WARNING:
With the wrong kind of fluid in the brake hydraulic
system, the brakes might not work well. This could
cause a crash. Always use the proper brake fluid.
Notice:
.Using the wrong fluid can badly damage
brake hydraulic system parts. For example,
just a few drops of mineral-based oil, such
as engine oil, in the brake hydraulic system
can damage brake hydraulic system parts so
badly that they will have to be replaced. Do
not let someone put in the wrong kind of
fluid.
.If brake fluid is spilled on the vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on the vehicle. If you do, wash it off
immediately. SeeWashing Your Vehicleon
page 7!102.
7-41
Spare Tire
Your vehicle, when new, had a fully-inflated spare tire.A spare tire may lose air over time, so check its inflationpressure regularly. SeeInflation - Tire Pressureonpage 7!65andLoading the Vehicleon page 6!32forinformation regarding proper tire inflation and loadingyour vehicle. For instruction on how to remove, install orstore a spare tire, seeRemoving the Flat Tire andInstalling the Spare Tireon page 7!86andStoring aFlat or Spare Tire and Tools on page 7!94.
After installing the spare tire on your vehicle, you shouldstop as soon as possible and make sure the spare iscorrectly inflated. The spare tire is made to perform wellat speeds up to 70 mph (112 km/h) at the recommendedinflation pressure, so you can finish your trip.
Have the damaged or flat road tire repaired or replacedas soon as you can and installed back onto yourvehicle. This way, a spare tire will be available in caseyou need it again. Do not mix tires and wheels ofdifferent sizes, because they will not fit. Keep yourspare tire and its wheel together.
Appearance Care
Interior Cleaning
The vehicle's interior will continue to look its best if it iscleaned often. Although not always visible, dust and dirtcan accumulate on the upholstery. Dirt can damagecarpet, fabric, leather, and plastic surfaces. Regularvacuuming is recommended to remove particles fromthe upholstery. It is important to keep the upholsteryfrom becoming and remaining heavily soiled. Soilsshould be removed as quickly as possible. Thevehicle's interior may experience extremes of heat thatcould cause stains to set rapidly.
Lighter colored interiors may require more frequentcleaning. Use care because newspapers and garmentsthat transfer color to home furnishings may also transfercolor to the vehicle's interior.
When cleaning the vehicle's interior, only use cleanersspecifically designed for the surfaces being cleaned.Permanent damage may result from using cleaners onsurfaces for which they were not intended. Use glasscleaner only on glass. Remove any accidentalover-spray from other surfaces immediately. To preventover-spray, apply cleaner directly to the cleaning cloth.
7-98