2015 Chevrolet Impala Owners Manual

control system to a setting that brings in only outside air. See “Climate Control Systems” in the Index. For more information about Carbon Monoxide, see Engine Exhaust on page 9-24.

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Towing a trailer requires a certain amount of experience. The combination you are driving is longer and not as responsive as the vehicle itself. Get acquainted with the handling and braking of the rig before setting out for the open road. Before starting, check all trailer hitch parts and attachments, safety chains, electrical connectors, lamps, tires, and mirrors. If the trailer has electric brakes, start the combination moving and then apply the trailer brake controller by hand to be sure the brakes work. During the trip, check occasionally to be sure that the load is secure and the lamps and any trailer brakes still work. Following Distance Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer. This can help to avoid heavy braking and sudden turns.

Passing More passing distance is needed when towing a trailer. The combination will not accelerate as quickly and is longer so it is necessary to go much farther beyond the passed vehicle before returning to the lane. Backing Up Hold the bottom of the steering wheel with one hand. 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

{ Caution

Making very sharp turns while trailering could cause the trailer to come in contact with the vehicle.

(Continued)

Driving and Operating

9-59

Caution (Continued)

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. If the trailer turn signal bulbs burn out, the arrows on the instrument cluster will still flash for turns. 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 gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might get hot and no longer work well.

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9-60

Driving and Operating

Vehicles 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 10-18.

Parking on Hills

{ Warning

Parking the vehicle on a hill with the trailer attached can be dangerous. If something goes wrong, the rig could start to move. People can be injured, and both the vehicle and the trailer can be damaged. When possible, always park the rig on a flat surface.

If parking the rig on a hill: 1. Press the brake pedal, but do not shift into P (Park) yet. Turn the wheels into the curb if facing downhill or into traffic if facing uphill.

2. Have someone place chocks

under the trailer wheels.

3. When the wheel chocks are in

place, release the regular brakes until the chocks absorb the load.

4. Reapply the brake pedal. Then

apply the parking brake and shift into P (Park).

5. Release the brake pedal. Leaving After Parking on a Hill 1. Apply and hold the brake pedal. 2. Start the engine. 3. Shift into a gear. 4. Release the parking brake. 5. Let up on the brake pedal. 6. Drive slowly until the trailer is

clear of the chocks.

7. Stop and have someone pick up

and store the chocks.

Maintenance when Trailer Towing The vehicle needs service more often when pulling a trailer. See Maintenance Schedule on page 11-3. Things that are especially important in trailer operation are automatic transmission fluid, engine oil, axle

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Driving and Operating

9-61

lubricant, belts, cooling system, and brake system. It is a good idea to inspect these before and during the trip. Check periodically to see that all hitch nuts and bolts are tight.

Trailer Towing (Bi-Fuel) The vehicle is neither designed nor intended to tow a trailer.

Trailer Towing (All except Bi-Fuel) Before pulling a trailer, three important considerations have to do with weight: . Weight of the trailer. . Weight of the trailer tongue.

Total weight on your vehicle's tires.

Weight of the Trailer How heavy can a trailer safely be?

It should never weigh more than 454 kg (1,000 lb). But even that can be too heavy. It depends on how the rig is used. For example, speed, altitude, road grades, outside temperature, and how much the vehicle is used to pull a trailer are all important. It can depend on any special equipment on the vehicle, and the amount of tongue weight the vehicle can carry. See “Weight of the Trailer Tongue” later in this section. Maximum trailer weight is calculated assuming only the driver is in the tow vehicle and it has all the required trailering equipment. The weight of additional optional equipment, passengers, and cargo in the tow vehicle must be subtracted from the maximum trailer weight. Ask your dealer for trailering information or advice, or write us at our Customer Assistance Offices. See Customer Assistance Offices on page 13-3.

Weight of the Trailer Tongue The tongue load (1) of any trailer is an important weight to measure because it affects the total gross weight of the vehicle. The Gross Vehicle Weight (GVW) includes the curb weight of the vehicle, any cargo carried in it, and the people who will be riding in the vehicle. If there are a lot of options, equipment, passengers, or cargo in the vehicle, it will reduce the tongue weight the vehicle can carry, which will also reduce the trailer weight the vehicle can tow. If towing a trailer, the tongue load must be added to the GVW because the vehicle will be carrying that weight, too. See Vehicle Load Limits on page 9-10.

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9-62

Driving and Operating

on the Tire and Loading Information label. See Vehicle Load Limits on page 9-10. Make sure not to go over the GVW limit for the vehicle, including the weight of the trailer tongue.

Towing Equipment

Hitches Use the correct hitch equipment. See your dealer or a hitch dealer for assistance.

The rear bumper on the vehicle is not intended for hitches. Do not attach rental hitches or other bumper-type hitches to it. Use only a frame-mounted hitch that does not attach to the bumper. . Will any holes be made in the body of the vehicle when the trailer hitch is installed? If so, seal the holes when the hitch is removed. If the holes are not sealed, dirt, water, and deadly carbon monoxide (CO) from the

exhaust can get into the vehicle. See Engine Exhaust on page 9-24.

Safety Chains Always attach chains between the vehicle and the trailer. Cross the safety chains under the tongue of the trailer to help prevent the tongue from contacting the road if it becomes separated from the hitch. Leave enough slack so the rig can turn. Never allow safety chains to drag on the ground. Trailer Brakes Does the trailer have its own brakes? Be sure to read and follow the instructions for the trailer brakes so they are installed, adjusted, and maintained properly. Because the vehicle has antilock brakes, do not tap into the vehicle's brake system. If this is done, both brake systems will not work well or at all.

The trailer tongue (1) should weigh 10 % of the total loaded trailer weight (2). After loading the trailer, weigh the trailer and then the tongue, separately, to see if the weights are proper. If they are not, adjustments might be made by moving some items around in the trailer. Total Weight on Your Vehicle's Tires Be sure the vehicle's tires are inflated to the upper limit for cold tires. These numbers can be found

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Driving and Operating

9-63

Conversions and Add-Ons

Add-On Electrical Equipment

{ Caution

Some electrical equipment can damage the vehicle or cause components to not work and would not be covered by the warranty. Always check with your dealer before adding electrical equipment.

Add-on equipment can drain the vehicle's 12-volt battery, even if the vehicle is not operating. The vehicle has an airbag system. Before attempting to add anything electrical to the vehicle, see Servicing the Airbag-Equipped Vehicle on page 3-31 and Adding Equipment to the Airbag-Equipped Vehicle on page 3-31.

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9-64

Driving and Operating

2 NOTES

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Vehicle Care

General Information

General Information . . . . . . . . . . 10-2
California Proposition

65 Warning . . . . . . . . . . . . . . . . . 10-2

California Perchlorate

Materials Requirements . . . . 10-3

Accessories and

Modifications . . . . . . . . . . . . . . . 10-3

Vehicle Checks Doing Your Own

Service Work . . . . . . . . . . . . . . . 10-3
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Engine Compartment

Overview . . . . . . . . . . . . . . . . . . . 10-5
Engine Oil . . . . . . . . . . . . . . . . . . . 10-8
Engine Oil Life System . . . . . 10-10
Automatic Transmission

Fluid . . . . . . . . . . . . . . . . . . . . . . 10-12
Engine Air Cleaner/Filter . . . . 10-12
Cooling System . . . . . . . . . . . . 10-14
Engine Coolant . . . . . . . . . . . . . 10-15
Engine Overheating . . . . . . . . 10-18
Overheated Engine

Protection Operating Mode . . . . . . . . . . . 10-19

Washer Fluid . . . . . . . . . . . . . . . 10-19
Brakes . . . . . . . . . . . . . . . . . . . . . 10-20
Brake Fluid . . . . . . . . . . . . . . . . . 10-21
Battery . . . . . . . . . . . . . . . . . . . . . 10-22
Starter Switch Check . . . . . . . 10-23
Automatic Transmission Shift

Lock Control Function Check . . . . . . . . . . . . . . . . . . . . . 10-24

Ignition Transmission Lock

Check . . . . . . . . . . . . . . . . . . . . . 10-24

Park Brake and P (Park)

Mechanism Check . . . . . . . . 10-24

Wiper Blade

Replacement . . . . . . . . . . . . . . 10-25

Headlamp Aiming

Headlamp Aiming . . . . . . . . . . 10-26

Bulb Replacement

Bulb Replacement . . . . . . . . . . 10-26
Halogen Bulbs . . . . . . . . . . . . . . 10-26
High Intensity Discharge

(HID) Lighting . . . . . . . . . . . . . 10-26
LED Lighting . . . . . . . . . . . . . . . 10-26
Headlamps, Front Turn

Signal, Sidemarker, and Parking Lamps . . . . . . . . . . . . 10-27

Vehicle Care

10-1

Taillamps, Turn Signal,

Stoplamps, and Back-Up Lamps . . . . . . . . . . . . . . . . . . . . 10-28
License Plate Lamp . . . . . . . . 10-29
Replacement Bulbs . . . . . . . . . 10-30

Electrical System

High Voltage Devices and

Wiring . . . . . . . . . . . . . . . . . . . . . 10-30

Electrical System

Overload . . . . . . . . . . . . . . . . . . 10-31
Fuses . . . . . . . . . . . . . . . . . . . . . . 10-31
Engine Compartment Fuse

Block . . . . . . . . . . . . . . . . . . . . . 10-32

Instrument Panel Fuse

Block . . . . . . . . . . . . . . . . . . . . . 10-36

Wheels and Tires

Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-38
All-Season Tires . . . . . . . . . . . . 10-39
Winter Tires . . . . . . . . . . . . . . . . 10-39
Summer Tires . . . . . . . . . . . . . . 10-39
Tire Sidewall Labeling . . . . . . 10-40
Tire Designations . . . . . . . . . . . 10-42
Tire Terminology and

Definitions . . . . . . . . . . . . . . . . 10-42
Tire Pressure . . . . . . . . . . . . . . . 10-45
Tire Pressure for High-Speed

Operation . . . . . . . . . . . . . . . . . 10-46

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10-2

Vehicle Care

Appearance Care

Exterior Care . . . . . . . . . . . . . . . 10-72
Interior Care . . . . . . . . . . . . . . . . 10-77
Floor Mats . . . . . . . . . . . . . . . . . . 10-80

General Information For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks:

Tire Pressure Monitor

System . . . . . . . . . . . . . . . . . . . 10-47

Tire Pressure Monitor

Operation . . . . . . . . . . . . . . . . . 10-48
Tire Inspection . . . . . . . . . . . . . . 10-51
Tire Rotation . . . . . . . . . . . . . . . 10-51
When It Is Time for New

Tires . . . . . . . . . . . . . . . . . . . . . . 10-53
Buying New Tires . . . . . . . . . . . 10-54
Different Size Tires and

Wheels . . . . . . . . . . . . . . . . . . . 10-55

Uniform Tire Quality

Grading . . . . . . . . . . . . . . . . . . . 10-56

Wheel Alignment and Tire

Balance . . . . . . . . . . . . . . . . . . . 10-57
Wheel Replacement . . . . . . . . 10-57
Tire Chains . . . . . . . . . . . . . . . . . 10-58
If a Tire Goes Flat . . . . . . . . . . 10-59
Tire Changing . . . . . . . . . . . . . . 10-60
Compact Spare Tire . . . . . . . . 10-65

Jump Starting

Jump Starting . . . . . . . . . . . . . . 10-66

Towing the Vehicle

Towing the Vehicle . . . . . . . . . 10-70
Recreational Vehicle

Towing . . . . . . . . . . . . . . . . . . . . 10-70

California Proposition 65 Warning Most motor vehicles, including this one, contain and/or emit chemicals known to the State of California to

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cause cancer and birth defects or other reproductive harm. Engine exhaust, many parts and systems, many fluids, and some component wear by-products contain and/or emit these chemicals.

California Perchlorate Materials Requirements Certain types of automotive applications, such as airbag initiators, safety belt pretensioners, and lithium batteries contained in Remote Keyless Entry transmitters, may contain perchlorate materials. Special handling may be necessary. For additional information, see www.dtsc.ca.gov/hazardouswaste/ perchlorate.

Accessories and Modifications Adding non‐dealer accessories or making modifications to the vehicle can affect vehicle performance and safety, including such things as airbags, braking, stability, ride and

handling, emissions systems, aerodynamics, durability, and electronic systems like antilock brakes, traction control, and stability control. These accessories or modifications could even cause malfunction or damage not covered by the vehicle warranty. Damage to vehicle components resulting from modifications or the installation or use of non‐GM certified parts, including control module or software modifications, is not covered under the terms of the vehicle warranty and may affect remaining warranty coverage for affected parts. GM Accessories are designed to complement and function with other systems on the vehicle. See your dealer to accessorize the vehicle using genuine GM Accessories installed by a dealer technician. Also, see Adding Equipment to the Airbag-Equipped Vehicle on page 3-31.

Vehicle Care

10-3

Vehicle Checks

Doing Your Own Service Work

{ Warning

It can be dangerous to work on your vehicle if you do not have the proper knowledge, service manual, tools, or parts. Always follow owner manual procedures and consult the service manual for your vehicle before doing any service work.

If doing some of your own service work, use the proper service manual. It tells you much more about how to service the vehicle than this manual can. To order the proper service manual, see Service Publications Ordering Information on page 13-11.

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10-4

Vehicle Care

This vehicle has an airbag system. Before attempting to do your own service work, see Airbag System Check on page 3-32. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Records on page 11-13.

{ Caution Even small amounts of contamination can cause damage to vehicle systems. Do not allow contaminants to contact the fluids, reservoir caps, or dipsticks.

Hood To open the hood:

1. Pull the hood release lever with this symbol on it. It is inside the vehicle on the lower side of the instrument panel.

2. Go to the front of the vehicle to find the secondary hood release handle. The handle is under the front edge of the hood near the center. Push the handle to the right and at the same time raise the hood.

To close the hood: 1. Before closing the hood, be sure

all the filler caps are properly installed.

2. Lower the hood 20 cm (8 in)

above the vehicle and release it so it fully latches. Check to make sure the hood is firmly closed. Repeat the process if necessary.

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Engine Compartment Overview

Vehicle Care

10-5

2.5L L4 Engine

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10-6

Vehicle Care

1. Engine Air Cleaner/Filter on

5. Engine Cooling Fans (Out of

page 10-12.

2. Engine Cover. 3. Engine Oil Fill Cap. See Engine

Oil on page 10-8.

4. Engine Oil Dipstick. See Engine

Oil on page 10-8.

View). See Cooling System on page 10-14.

6. Transmission Fluid Cap. See

Automatic Transmission Fluid on page 10-12.

7. Brake Fluid Reservoir. See

Brakes on page 10-20.

8. Coolant Surge Tank and

Pressure Cap. See Engine Coolant on page 10-15.

9. Battery (Under Cover). See

Battery on page 10-22.

10. Windshield Washer Fluid

Reservoir. See Washer Fluid on page 10-19.

11. Engine Compartment Fuse

Block on page 10-32.

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Vehicle Care

10-7

3.6L V6 Engine

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10-8

Vehicle Care

1. Engine Air Cleaner/Filter on

11. Engine Compartment Fuse

page 10-12.

Block on page 10-32.

2. Engine Oil Fill Cap. See Engine

Oil on page 10-8.

3. Engine Oil Dipstick. See Engine

Oil on page 10-8.

4. Engine Cooling Fans (Out of

View). See Cooling System on page 10-14.

5. Engine Cover. 6. Transmission Fluid Cap and Dipstick (Out of View). See Automatic Transmission Fluid on page 10-12.

7. Brake Fluid Reservoir. See

Brakes on page 10-20.

8. Coolant Surge Tank and

Pressure Cap. See Engine Coolant on page 10-15.

9. Battery (Under Cover). See

Battery on page 10-22.

10. Windshield Washer Fluid

Reservoir. See Washer Fluid on page 10-19.

Engine Oil To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these simple, but important steps will help protect your investment: . Always use engine oil approved to the proper specification and of the proper viscosity grade. See “Selecting the Right Engine Oil” in this section.

. Check the engine oil level regularly and maintain the proper oil level. See “Checking Engine Oil” and “When to Add Engine Oil” in this section.

. Change the engine oil at the

appropriate time. See Engine Oil Life System on page 10-10. . Always dispose of engine oil

properly. See “What to Do with Used Oil” in this section.

Checking Engine Oil It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the vehicle must be on level ground. The engine oil dipstick handle is a loop. See Engine Compartment Overview on page 10-5 for the location of the engine oil dipstick. Obtaining an accurate oil level reading is essential: 1.

If the engine has been running recently, turn off the engine and allow several minutes for the oil to drain back into the oil pan. Checking the oil level too soon after engine shutoff will not provide an accurate oil level reading.

{ Warning

The engine oil dipstick handle may be hot; it could burn you. Use a towel or glove to touch the dipstick handle.

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Vehicle Care

10-9

Selecting the Right Engine Oil Selecting the right engine oil depends on both the proper oil specification and viscosity grade. See Recommended Fluids and Lubricants on page 11-11.

Specification Use and ask for licensed engine oils with the dexos1® approved certification mark. Engine oils meeting the requirements for the vehicle should have the dexos1
approved certification mark. This certification mark indicates that the oil has been approved to the dexos1
specification. See www.gmdexos.com.

2. Pull out the dipstick and wipe it

with a clean paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level.

When to Add Engine Oil

2.5L L4 Shown, 3.6L V6 Similar If the oil is below the cross-hatched area at the tip of the dipstick, add 1 L (1 qt) of the recommended oil and then recheck the level. See “Selecting the Right Engine Oil” in this section for an explanation of what kind of oil to use. For engine oil crankcase capacity, see Capacities and Specifications on page 12-2.

{ Caution

Do not add too much oil. Oil levels above or below the acceptable operating range shown on the dipstick are harmful to the engine. If you find that you have an oil level above the operating range, i.e., the engine has so much oil that the oil level gets above the upper mark that shows the proper operating range, the engine could be damaged. You should drain out the excess oil or limit driving of the vehicle and seek a service professional to remove the excess amount of oil.

See Engine Compartment Overview on page 10-5 for the location of the engine oil fill cap. Add enough oil to put the level somewhere in the proper operating range. Push the dipstick all the way back in when through.

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10-10

Vehicle Care

{ Caution

Failure to use the recommended engine oil can result in engine damage not covered by the vehicle warranty. Check with your dealer or service provider on whether the oil is approved to the dexos1 specification.

Viscosity Grade Use SAE 5W-30 viscosity grade engine oil for the 3.6L V6 engine. Use SAE 5W-20 viscosity grade engine oil for the 2.5L L4 engine. SAE 0W-20 may be used as an alternative. Cold Temperature Operation: In an area of extreme cold, where the temperature falls below −29°C (−20° F), an SAE 0W-30 oil may be used for the 3.6L V6 engine. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate

viscosity grade, always select an oil of the correct specification. See “Specification” earlier in this section for more information. Engine Oil Additives/Engine Oil Flushes Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark 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. What to Do with Used Oil Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. Do not let used oil stay on your skin for very long. Clean your skin and nails with soap and water, or a good hand cleaner. Wash or properly dispose of clothing or rags

containing used engine oil. See the manufacturer's warnings about the use and disposal of oil products. Used oil can be a threat to the environment. If you change your own oil, be sure to drain all the oil from the filter before disposal. Never dispose of oil by putting it in the trash or pouring it on the ground, into sewers, or into streams or bodies of water. Recycle it by taking it to a place that collects used oil.

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 a combination of factors which include engine revolutions, engine temperature, and miles driven. 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.

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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 Engine Oil Messages on page 5-31. Change the oil as soon as possible within the next 1 000 km (600 mi). It is possible that, if driving under the best conditions, the oil life system might indicate that an oil change is not necessary for up to a year. The engine oil and filter must be changed at least once a year and at this time the system must be reset. Your dealer has trained service people who will perform this work and reset the system. It is also important to check the oil regularly over the course of an oil drain interval 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 mi) since the last oil change. Remember to reset the oil life system whenever the oil is changed.

How to Reset the Engine Oil Life System Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system: 1. Using the DIC controls on the

right side of the steering wheel, display REMAINING OIL LIFE on the DIC. See Driver Information Center (DIC) on page 5-26. When remaining oil life is low, the CHANGE ENGINE OIL SOON message will appear on the display. See Engine Oil Messages on page 5-31.

2. Press V on the DIC controls and

hold down for a few seconds to clear the CHANGE ENGINE OIL SOON message and reset the oil life at 100%. Be careful not to reset the oil life display accidentally at any time other than after the oil is

Vehicle Care

10-11

changed. It cannot be reset accurately until the next oil change.

The oil life system can also be reset as follows: 1. Turn the ignition on with the

engine off.

2. Fully press and release the

accelerator pedal three times within five seconds. If the CHANGE ENGINE OIL SOON message is not on, the system is reset.

The system is reset when the CHANGE ENGINE OIL SOON message is off. If the CHANGE ENGINE OIL SOON message comes back on when the vehicle is started, the engine oil life system has not been reset. Repeat the procedure.

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10-12

Vehicle Care

Automatic Transmission Fluid

How to Check Automatic Transmission Fluid It is not necessary to check the transmission fluid level. A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to your dealer service department and have it repaired as soon as possible. There is a special procedure for checking and changing the transmission fluid. Because this procedure is difficult, you should have this done at your dealer service department. Contact your dealer for additional information or the procedure can be found in the service manual. To purchase a service manual, see Service Publications Ordering Information on page 13-11.

Change the fluid at the intervals listed in Maintenance Schedule on page 11-3, and be sure to use the fluid listed in Recommended Fluids and Lubricants on page 11-11.

Engine Air Cleaner/Filter The engine air cleaner/filter is in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview on page 10-5 for more information on location. When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at the scheduled maintenance intervals and replace it at the first oil change after each 90 000 km (60,000 mi) interval. See Maintenance Schedule on page 11-3. If you are driving in dusty/dirty conditions, inspect the filter at each engine oil change.

How to Inspect the Engine Air Cleaner/Filter To inspect the air cleaner/filter, remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains covered with dirt, a new filter is required.

2.5L L4 Engine

1. Screws 2. Secondary Air Hose (If

Equipped)

3. Electrical Connector 4. Air Duct Clamp

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-7576026) - 2015 - CRC 1st Edition - 4/2/14

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To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood on

page 10-4.

2. Remove the screws (1) on top of

the engine air cleaner/filter housing.

3. Disconnect the secondary air

hose (2) (if equipped).

4. Disconnect the electrical

connector (3).

5. Disconnect the outlet duct by

loosening the air duct clamp (4). 6. Lift the filter cover housing away from the engine air cleaner/filter housing.

7. Pull out the filter. 8.

Inspect or replace the engine air cleaner/filter.

9. Reverse Steps 2–5 to reinstall

the filter cover housing.

3.6L V6 Engine

1. Screws 2. Secondary Air Hose (If

Equipped)

3. Electrical Connector 4. Air Duct Clamp

To inspect or replace the engine air cleaner/filter: 1. Open the hood. See Hood on

page 10-4.

2. Remove the screws (1) on top of

the engine air cleaner/filter housing.

Vehicle Care

10-13

3. Disconnect the secondary air

hose (2) (if equipped).

4. Disconnect the electrical

connector (3).

5. Disconnect the outlet duct by

loosening the air duct clamp (4). 6. Lift the filter cover housing away from the engine air cleaner/filter housing.

7. Pull out the filter. 8.

Inspect or replace the engine air cleaner/filter.

9. Reverse Steps 2–5 to reinstall

the filter cover housing. { Warning

Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop flames if the engine backfires. Use caution when working on the engine and do not drive with the air cleaner/filter off.

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10-14

Vehicle Care

{ Caution

If the air cleaner/filter is off, dirt can easily get into the engine, which could damage it. Always have the air cleaner/filter in place when you are driving.

Cooling System The cooling system allows the engine to maintain the correct working temperature.

2.5L L4 Engine

3.6L V6 Engine

1. Engine Cooling Fans (Out

1. Engine Cooling Fans (Out

of View)

of View)

2. Coolant Surge Tank and

2. Coolant Surge Tank and

Pressure Cap

Pressure Cap

{ Warning

An electric engine cooling fan under the hood can start up even when the engine is not running and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.

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{ Warning

Heater and radiator hoses, and other engine parts, can be very hot. Do not touch them. If you do, you can be burned. 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.

{ Caution Using coolant other than DEX-COOL® can cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant could require changing sooner. Any repairs would not be covered by the

(Continued)

Caution (Continued)

vehicle warranty. Always use DEX-COOL (silicate-free) coolant in the 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 5 years or 240 000 km (150,000 mi), 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, see Engine Overheating on page 10-18.

Vehicle Care

10-15

What to Use

{ Warning

Adding only plain water or some other liquid to the cooling system can be dangerous. Plain water and other liquids, can boil before the proper coolant mixture will. The 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.

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10-16

Vehicle Care

This mixture: . Gives freezing protection down

to −37°C (−34°F), outside temperature.

. Gives boiling protection up to

129°C (265°F), engine temperature.

. Protects against rust and

corrosion.

. Will not damage aluminum parts. . Help keep the proper engine

temperature.

{ Caution

If improper coolant mixture, inhibitors, or additives are used in the vehicle cooling system, the engine could overheat and be damaged. Too much water in the mixture can freeze and crack engine cooling parts. The repairs would not be covered by the vehicle warranty. Use only the

(Continued)

Caution (Continued)

proper mixture of engine coolant for the cooling system. See Recommended Fluids and Lubricants on page 11-11.

Never dispose of engine coolant by putting it in the trash, pouring it on the ground, or into sewers, streams, or bodies of water. Have the coolant changed by an authorized service center, familiar with legal requirements regarding used coolant disposal. This will help protect the environment and your health. Checking Coolant The vehicle must be on a level surface when checking the coolant level. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down.

If coolant is visible but the coolant level is not at or above the mark pointed to, add a 50/50 mixture of clean drinkable water and DEX-COOL coolant. Be sure the cooling system is cool before this is done. If no coolant is visible in the coolant surge tank, add coolant as follows: How to Add Coolant to the Coolant Surge Tank { Caution

This vehicle has a specific coolant fill procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged.

If no problem is found, check to see if coolant is visible in the coolant surge tank. If coolant is visible but the coolant level is not at the indicated level mark, add a 50/ 50 mixture of clean, drinkable water

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and DEX-COOL coolant at the coolant surge tank, but be sure the cooling system, including the coolant surge tank pressure cap, is cool before you do it.

{ Warning

Steam and scalding liquids from a hot cooling system can blow out and burn you badly. Never turn the cap when the cooling system, including the surge tank pressure cap, is hot. Wait for the cooling system and surge tank pressure cap to cool.

{ Caution

In cold weather, water can freeze and crack the engine, radiator, heater core, and other parts. Use the recommended coolant and the proper coolant mixture.

Vehicle Care

10-17

will allow any pressure still left to be vented out the discharge hose.

2. Keep turning the pressure cap

slowly and remove it.

{ Warning

You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine.

1. Remove the coolant surge tank pressure cap when the cooling system, including the coolant surge tank pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwise about one-quarter of a turn. If you hear a hiss, wait for that to stop. This

3. Fill the coolant surge tank with the proper DEX-COOL coolant mixture to the indicated level mark.

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10-18

Vehicle Care

4. With the coolant surge tank

pressure cap off, start the engine and let it run until you can feel the upper radiator hose getting hot. Watch out for the engine cooling fans. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower, add more of the proper DEX-COOL coolant mixture to the coolant surge tank until the level reaches the indicated level mark.

5. Replace the pressure cap tightly. Check the level in the coolant surge tank when the cooling system has cooled down. If the coolant is not at the proper level, repeat Steps 1– 3 and reinstall the pressure cap. If the coolant still is not at the proper level when the system cools down again, see your dealer.

Engine Overheating There is a coolant temperature gauge on the instrument cluster that indicates an overheated engine condition. See Engine Coolant Temperature Gauge on page 5-14. If the decision is made not to lift the hood when this warning appears, get service help right away. See Roadside Assistance Program on page 13-5. If the decision is made 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, the fans should be running. If not, do not continue to run the engine and have the vehicle serviced.

{ Caution

Running the engine without coolant may cause damage or a fire. Vehicle damage would not be covered by the vehicle warranty. See Overheated Engine Protection Operating Mode on page 10-19 for information on driving to a safe place in an emergency.

If Steam Is Coming from the Engine Compartment See Overheated Engine Protection Operating Mode on page 10-19 for information on driving to a safe place in an emergency.

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Black plate (19,1)

If No Steam Is Coming from the Engine Compartment If an engine overheat warning is displayed but no steam can be seen or heard, the problem might not be too serious. Sometimes the engine can get a little too hot when the vehicle: . Climbs a long hill on a hot day. . Stops after high-speed driving. Idles for long periods in traffic. Tows a trailer.

If the overheat warning displays with no sign of steam: 1. Turn the air conditioning off. 2. Turn the heater on to the highest

temperature and to the highest fan speed. Open the windows as necessary.

3. When it is safe to do so, pull off

the road, shift to P (Park) or N (Neutral), and let the engine idle.

If the coolant temperature gauge is no longer in the overheat zone, the vehicle can be driven. Continue to drive the vehicle slowly for about 10 minutes. Keep a safe vehicle distance from the vehicle in front. If the warning does not come back on, continue to drive normally and have the cooling system checked for proper fill and function. If the warning continues, pull over, stop, and park the vehicle right away. If there is no sign of steam, idle the engine for three minutes while parked. If the warning is still displayed, turn off the engine until it cools down. Also, see Overheated Engine Protection Operating Mode on page 10-19.

Vehicle Care

10-19

Overheated Engine Protection Operating Mode This emergency operating mode allows the vehicle to be driven to a safe place in an emergency situation. If an overheated engine condition exists, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, there is significant loss in power and engine performance. The engine coolant temperature gauge indicates if an overheat condition exists. Driving extended distances and/or towing a trailer in the overheat protection mode should be avoided.

Washer Fluid

What to Use When windshield washer fluid is needed, be sure to read the manufacturer's instructions before

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-7576026) - 2015 - CRC 1st Edition - 4/2/14

Black plate (20,1)

10-20

Vehicle Care

use. If operating the vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Adding Washer Fluid

Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 10-5 for reservoir location.

{ Caution

. Do not use engine coolant

(antifreeze) in the windshield washer. It can damage the windshield washer system and paint.

(Continued)

Caution (Continued)

. Do not mix water with

ready-to-use washer fluid. Water can cause the solution to freeze and damage the washer fluid tank and other parts of the washer system.

. When using concentrated

washer fluid, follow the manufacturer instructions for adding water.

. Fill the washer fluid tank only

three-quarters full when it is very cold. This allows for fluid expansion if freezing occurs, which could damage the tank if it is completely full.

Brakes This vehicle has disc brakes. Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. The sound can come and go or be

heard all the time when the vehicle is moving, except when applying the brake pedal firmly.

{ Warning

The brake wear warning sound means that soon the brakes will not work well. That could lead to a crash. When the brake wear warning sound is heard, have the vehicle serviced.

{ Caution

Continuing to drive with worn-out brake pads could result in costly brake repair.

Some driving conditions or climates can cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with the brakes.

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Black plate (21,1)

Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake pads for wear and evenly tighten wheel nuts in the proper sequence to torque specifications. See Capacities and Specifications on page 12-2. Brake pads should be replaced as complete sets. Brake Pedal Travel See your dealer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign that brake service might be required. Brake Adjustment Every time the brakes are applied, with or without the vehicle moving, the brakes adjust for wear. Replacing Brake System Parts The braking system on a vehicle is complex. Its many parts have to be of top quality and work well together

if the vehicle is to have really good braking. The vehicle was designed and tested with top-quality brake parts. When parts of the braking system are replaced, be sure to get new, approved replacement parts. If this is not done, the brakes might not work properly. For example, installing disc brake pads that are wrong for the vehicle, can change the balance between the front and rear brakes — for the worse. The braking performance expected can change in many other ways if the wrong replacement brake parts are installed.

Brake Fluid

The brake master cylinder reservoir is filled with DOT 3 brake fluid as indicated on the reservoir cap. See

Vehicle Care

10-21

Engine Compartment Overview on page 10-5 for the location of the reservoir. There are only two reasons why the brake fluid level in the reservoir might go down:

The brake fluid level goes down because of normal brake lining wear. When new linings are installed, the fluid level goes back up.

. A fluid leak in the brake

hydraulic system can also cause a low fluid level. Have the brake hydraulic system fixed, since a leak means that sooner or later the brakes will not work well.

Do not top off the brake fluid. Adding fluid does not correct a leak. If fluid is added when the linings are worn, there will be too much fluid when new brake linings are installed. Add or remove brake fluid, as necessary, only when work is done on the brake hydraulic system.

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Black plate (22,1)

10-22

Vehicle Care

{ Warning

{ Warning

If too much brake fluid is added, it can spill on the engine and burn, if the engine is hot enough. You or others could be burned, and the vehicle could be damaged. Add brake fluid only when work is done on the brake hydraulic system.

When the brake fluid falls to a low level, the brake warning light comes on. See Brake System Warning Light on page 5-20.

What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11-11. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This helps keep dirt from entering the reservoir.

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.

{ Caution

. 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.

(Continued)

Caution (Continued)

. 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.

Battery This vehicle has a standard 12-volt battery under the hood. See Engine Compartment Overview on page 10-5. Refer to the replacement number shown on the original battery label when a new 12-volt battery is needed.

Stop/Start System If equipped with the 2.5L L4 Engine, the vehicle has a stop/start system to shut off the engine to help conserve fuel. See Starting the Engine on page 9-18.

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Black plate (23,1)

Vehicles with Stop/Start have an Absorbed Glass Mat (AGM) 12-volt underhood battery. Installation of a standard 12-volt battery will result in reduced 12-volt battery life. There is also an auxiliary AGM battery behind the access panel in the left rear of the trunk. This battery is for managing the stop/ start auxiliary loads and is not to be used for any other purpose. See your dealer if the auxiliary battery needs service. When using a 12-volt battery charger on the 12-volt AGM battery, some chargers have an AGM battery setting on the charger. If available, use the AGM setting on the charger, to limit charge voltage to 14.8 volts.

{ Warning

Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals

(Continued)

Warning (Continued)

known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

Vehicle Storage

{ Warning

Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 10-66 for tips on working around a battery without getting hurt.

Infrequent Usage: Remove the 12-volt battery black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the 12-volt battery black, negative (−) cable from the battery or use a battery trickle charger.

Vehicle Care

10-23

Remember to reconnect the battery when ready to drive the vehicle.

Starter Switch Check

{ Warning When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle.

2. Apply both the parking brake

and the regular brake. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

3. Try to start the engine in each gear. The vehicle should start only in P (Park) or N (Neutral).

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10-24

Vehicle Care

If the vehicle starts in any other position, contact your dealer for service.

Automatic Transmission Shift Lock Control Function Check

{ Warning When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle. It should be parked on a level surface.

2. Apply the parking brake. Be

ready to apply the regular brake immediately if the vehicle begins to move.

3. With the engine off, turn the

ignition on, but do not start the engine. Without applying the regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer for service.

Ignition Transmission Lock Check If equipped with a key type ignition, while parked and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.

The ignition should turn to LOCK/OFF only when the shift lever is in P (Park). The ignition key should come out only in LOCK/OFF.

Contact your dealer if service is required.

Park Brake and P (Park) Mechanism Check { Warning

When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move.

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake.

To check the parking brake's holding ability: With the engine running and the transmission in N (Neutral), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-7576026) - 2015 - CRC 1st Edition - 4/2/14

Black plate (25,1)

To check the P (Park) mechanism's holding ability: With the engine running, shift to P (Park). Then release the parking brake followed by the regular brake.

Contact your dealer if service is required.

Wiper Blade Replacement Windshield wiper blades should be inspected for wear or cracking. It is a good idea to clean the wiper blade assembly on a regular basis. When worn, or when cleaning is ineffective, replace the wiper blade. For proper windshield wiper blade length and type, see Maintenance Replacement Parts on page 11-12.

{ Caution

Allowing the wiper arm to touch the windshield when no wiper blade is installed could damage

(Continued)

Vehicle Care

10-25

3. With the latch open, pull the wiper blade down toward the windshield far enough to release it from the J-hooked end of the wiper arm.

4. Remove the wiper blade. 5. Reverse Steps 1–3 for wiper

blade replacement.

Caution (Continued)

the windshield. Any damage that occurs would not be covered by your warranty. Do not allow the wiper arm to touch the windshield.

To replace the wiper blade: 1. Pull the wiper assembly away

from the windshield.

2. Lift up on the latch in the middle

of the wiper blade where the wiper arm attaches.

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10-26

Vehicle Care

Headlamp Aiming Headlamp aim has been preset and should need no further adjustment. If the vehicle is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps is necessary, see your dealer.

Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10-30. For any bulb‐changing procedure not listed in this section, contact your dealer.

Halogen Bulbs

{ Warning

Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package.

High Intensity Discharge (HID) Lighting

{ Warning

The high intensity discharge lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured. Have your dealer or a qualified technician service them.

The vehicle may have HID headlamps. After an HID headlamp bulb has been replaced, you may notice that the beam is a slightly different shade than it was originally. This is normal.

LED Lighting This vehicle has several LED lamps. For replacement of any LED lighting assembly, contact your dealer.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-7576026) - 2015 - CRC 1st Edition - 4/2/14

Black plate (27,1)

Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps

Base Headlamp Assembly The base model vehicle has halogen high/low-beam headlamps, a parking/turn signal lamp, and a sidemarker lamp on the headlamp assembly.

To replace one of the headlamp bulbs: 1. Open the hood. See Hood on

page 10-4.

2. For the driver side bulb, remove

the windshield washer bottle filler neck by firmly pulling it straight up and out of the bottle. 3. Remove the cap from the back

of the headlamp assembly by turning it counterclockwise.

Driver Side Shown, Passenger Side Similar 1. Sidemarker Lamp 2. High/Low-Beam Headlamp 3. Parking/Turn Signal Lamp

4. Disconnect the electrical

connector.

5. Remove the bulb from the lamp

assembly by turning counterclockwise.

Vehicle Care

10-27

6.

Install a new bulb in the lamp assembly.

7. Connect the electrical connector. 8. Replace the cap on the back of

the headlamp assembly by turning it clockwise.

9. For the driver side, reinstall the

windshield washer bottle filler neck by firmly pushing it straight into the bottle. Ensure that the filler neck clip engages into the underhood electrical center retainer.

Uplevel Headlamp Assembly The uplevel model vehicle has a high intensity discharge (HID) high/ low beam headlamp, a parking/turn signal lamp, and a sidemarker lamp on the headlamp assembly. For replacement of the headlamp on an HID assembly, contact your dealer. See High Intensity Discharge (HID) Lighting on page 10-26.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-7576026) - 2015 - CRC 1st Edition - 4/2/14