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1. Coolant Surge Tank andPressure Cap. SeeEngineCoolant0294.
2.Engine Air Cleaner/Filter0291.
3. Engine Oil Fill Cap. SeeEngine Oil0286.
4. Engine Cooling Fan (Out ofView). SeeCoolingSystem0292.
5. Engine Oil Dipstick. SeeEngine Oil0286.
6.Engine Compartment FuseBlock0310.
7. Brake/Clutch Fluid Reservoir.SeeBrake Fluid0299orHydraulic Clutch0290(IfEquipped).
8. Windshield Washer FluidReservoir. SeeWasherFluid0298.
9.Battery - North America0300.
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1. Coolant Surge Tank andPressure Cap. SeeEngineCoolant0294.
2.Engine Air Cleaner/Filter0291.
3. Engine Oil Dipstick. SeeEngine Oil0286.
4. Engine Cooling Fan (Out ofView). SeeCoolingSystem0292.
5. Engine Oil Fill Cap. SeeEngine Oil0286.
6.Engine Compartment FuseBlock0310.
7. Brake Fluid Reservoir. SeeBrake Fluid0299.
8. Windshield Washer FluidReservoir. SeeWasherFluid0298.
9.Battery - North America0300.
If the vehicle has a diesel engine,see the Duramax dieselsupplement.
Engine Oil
For diesel engine vehicles, see“Engine Oil”in the Duramax dieselsupplement.
To e n s u r e p r o p e r e n g i n eperformance and long life, carefulattention must be paid to engine oil.Following these simple, butimportant steps will help protectyour investment:
.Use engine oil approved to theproper specification and of theproper viscosity grade. See“Selecting the Right Engine Oil”in this section.
.Check the engine oil levelregularly and maintain theproper oil level. See“CheckingEngine Oil”and“When to AddEngine Oil”in this section.
.Change the engine oil at theappropriate time. SeeEngine OilLife System0288.
.Always dispose of engine oilproperly. See“What to Do withUsed Oil”in this section.
Checking Engine Oil
Check the engine oil level regularly,every 650 km (400 mi), especiallyprior to a long trip. The engine oildipstick handle is a loop. SeeEngine Compartment Overview0283for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
If a low oil Driver Information Center(DIC) message displays, check theoil level.
Follow these guidelines:
.To g e t a n a c c u r a t e r e a d i n g , p a r kthe vehicle on level ground.Check the engine oil level afterthe engine has been off for atleast two hours. Checking theengine oil level on steep gradesor too soon after engine shutoffcan result in incorrect readings.Accuracy improves when
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everyday driving. The fans may turnoff if no cooling is required. Underheavy vehicle loading, trailer towing,high outside temperatures,or operation of the air conditioningsystem, the fans may change tohigh speed and an increase in fannoise may be heard. This is normaland indicates that the coolingsystem is functioning properly. Thefans will change to low speed whenadditional cooling is no longerrequired.
The electric engine cooling fansmay run after the engine has beenturned. off. This is normal and noservice is required.
Washer Fluid
What to Use
When windshield washer fluid needsto be added, be sure to read themanufacturer's instructions beforeuse. Use a fluid that has sufficientprotection against freezing in anarea where the temperature may fallbelow freezing.
Adding Washer Fluid
Open the cap with the washersymbol on it. Add washer fluid untilthe tank is full. SeeEngineCompartment Overview0283forreservoir location.
Caution
.Do not use washer fluid thatcontains any type of waterrepellent coating. This cancause the wiper blades tochatter or skip.
.Do not use engine coolant(antifreeze) in thewindshield washer. It candamage the windshieldwasher system and paint.
(Continued)
Caution (Continued)
.Do not mix water withready-to-use washer fluid.Water can cause thesolution to freeze anddamage the washer fluidtank and other parts of thewasher system.
.When using concentratedwasher fluid, follow themanufacturer instructions foradding water.
.Fill the washer fluid tankonly three-quarters full whenit is very cold. This allowsfor fluid expansion iffreezing occurs, which coulddamage the tank if it iscompletely full.
Brakes
Disc brake pads have built-in wearindicators that make a high-pitchedwarning sound when the brake padsare worn and new pads are needed.The sound can come and go or be