2015 GMC Acadia Owners Manual

a steady speed. Do not use cruise control on winding roads or in heavy traffic. Cruise control can be dangerous on slippery roads. On such roads, fast changes in tire traction can cause excessive wheel slip, and you could lose control. Do not use cruise control on slippery roads.

If the Traction Control System (TCS) or StabiliTrak system begins to limit wheel spin while cruise control is being used, the cruise control will disengage. See Traction Control/ Electronic Stability Control on page 9-28. If a collision alert occurs when cruise control is activated, cruise control is disengaged. See Forward Collision Alert (FCA) System on page 9-33. When road conditions allow you to safely use it again, cruise control can be turned on. If the brakes are applied, cruise control is disengaged.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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Driving and Operating

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Resuming a Set Speed If the cruise control is set at a desired speed and then the brakes are applied or [ is pressed, the cruise control is disengaged without erasing the set speed from memory. Once the vehicle reaches 40 km/h (25 mph) or more, press +RES. The vehicle returns to the previously set speed.

Increasing Speed While Using Cruise Control If the cruise control system is already activated: . Press and hold +RES until the desired speed is reached, then release it. To increase vehicle speed in small increments, press +RES briefly. For each press, the vehicle goes about 1.6 km/h (1 mph) faster.

SET–: Press briefly to set the speed and activate cruise control. If cruise control is already active, use to decrease vehicle speed. [ (Cancel): Press to disengage cruise control without erasing the set speed from memory.

Setting Cruise Control If I is on when not in use, SET– or +RES could get pressed and go into cruise when not desired. Keep I off when cruise is not being used. The cruise control light on the instrument cluster comes on after the cruise control has been set to the desired speed. 1. Press I to turn the cruise

control system on.

2. Get up to the desired speed. 3. Press and release SET–. 4. Remove foot from the

accelerator.

I (On/Off): Press to turn cruise control on or off. The indicator light on the button comes on when the cruise control is on. +RES (Resume/Accelerate): If there is a set speed in memory, press briefly to resume to that speed or press and hold to accelerate. If cruise control is already active, use to increase vehicle speed.

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Driving and Operating

The speedometer reading can be displayed in either English or metric units. See Instrument Cluster on page 5-10. The increment value used depends on the units displayed.

Reducing Speed While Using Cruise Control If the cruise control system is already activated: . Press and hold SET– until the

desired lower speed is reached, then release it. To slow down in small increments, press SET– briefly. For each press, the vehicle goes about 1.6 km/h (1 mph) slower. The speedometer reading can be displayed in either English or metric units. See Instrument Cluster on page 5-10. The increment value used depends on the units displayed.

Passing Another Vehicle While Using Cruise Control Use the accelerator pedal to increase the vehicle speed. When you take your foot off the pedal, the vehicle will slow down to the previously set cruise speed. While pressing the accelerator pedal or shortly following the release to override cruise control, briefly pressing SET– will result in cruise control set to the current vehicle speed.

Using Cruise Control on Hills How well the cruise control will work on hills depends upon the vehicle speed, load, and the steepness of the hills. When going up steep hills, you might have to step on the accelerator pedal to maintain your speed. When going downhill, you might have to brake or shift to a lower gear to keep your speed down. If the brake pedal is applied cruise control will disengage.

Ending Cruise Control There are four ways to end cruise control: . Step lightly on the brake pedal.

. Press [.

. Shift the transmission to

N (Neutral). To turn off the cruise control, press I.

Erasing Speed Memory The cruise control set speed is erased from memory if I is pressed or the ignition is turned off.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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Driver Assistance Systems

Forward Collision Alert (FCA) System If equipped, the FCA system may help to avoid or reduce the harm caused by front-end crashes. When approaching a vehicle ahead too quickly, FCA provides a red flashing visual alert on the windshield and rapidly beeps. FCA also lights an amber visual alert if following another vehicle much too closely. FCA detects vehicles within a distance of approximately 60 m (197 ft) and operates at speeds above 40 km/h (25 mph).

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{ Warning

Detecting the Vehicle Ahead

FCA is a warning system and does not apply the brakes. When approaching a slower-moving or stopped vehicle ahead too rapidly, or when following a vehicle too closely, FCA may not provide a warning with enough time to help avoid a crash. FCA does not warn of pedestrians, animals, signs, guardrails, bridges, construction barrels, or other objects. Be ready to take action and apply the brakes. For more information, see Defensive Driving on page 9-3.

FCA can be disabled with the [ button on the center stack.

FCA warnings will not occur unless the FCA system detects a vehicle ahead. When a vehicle is detected, the vehicle ahead indicator will display green. Vehicles may not be detected on curves, highway exit ramps, or hills; or due to poor visibility. FCA will not detect another vehicle ahead until it is completely in the driving lane.

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Driving and Operating

{ Warning

FCA does not provide a warning to help avoid a crash, unless it detects a vehicle. FCA may not detect a vehicle ahead if the FCA sensor is blocked by dirt, snow, or ice, or if the windshield is damaged. It may also not detect a vehicle on winding or hilly roads, or in conditions that can limit visibility such as fog, rain, or snow, or if the headlamps or windshield are not cleaned or in proper condition. Keep the windshield, headlamps, and FCA sensors clean and in good repair.

Collision Alert

Tailgating Alert

Without HUD

With HUD

When your vehicle approaches another detected vehicle too rapidly, the red FCA display will flash on the windshield. Also, eight rapid high-pitched beeps will sound from the front. When this Collision Alert occurs, the brake system may prepare for driver braking to occur more rapidly which can cause a brief, mild deceleration. Continue to apply the brake pedal as needed.

The vehicle ahead indicator will display amber if following a detected vehicle ahead much too closely. Selecting the Alert Timing The Collision Alert button is on the center stack. Press [ to set the alert timing to far, medium, near, or off. The first button press shows the current control setting on the DIC. Additional button presses will change this setting. The chosen setting will remain until it is changed and will affect both the Collision Alert and the Tailgating Alert features. The timing of both alerts will vary based on vehicle speed. The faster the vehicle speed, the farther away the alert will occur. Consider traffic and weather

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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Driving and Operating

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The sensors on the rear bumper are used to detect objects up to 2.5 m (8 ft) behind the vehicle, and at least 25 cm (10 in) off the ground and below liftgate level. Detection distances may be less during warmer or humid weather. { Warning

The parking assist system does not detect children, pedestrians, bicyclists, animals, or objects below the bumper or that are too close or too far from the vehicle. It is not available at speeds greater than 8 km/h (5 mph). To prevent injury, death, or vehicle damage, even with parking assist, always check the area around the vehicle and check all mirrors before backing.

How the System Works RPA comes on automatically when the shift lever is moved into R (Reverse). A single beep sounds to indicate the system is working. An obstacle is indicated by audible beeps. The interval between the beeps becomes shorter as the vehicle gets closer to the obstacle. When the distance is less than 30 cm (12 in) the beeping is continuous for five seconds. Turning the System On and Off The system can be disabled through the Driver Information Center (DIC). See “Park Assist” under Driver Information Center (DIC) on page 5-23. Turn off RPA when towing a trailer. RPA defaults to the on setting each time the vehicle is started.

conditions when selecting the alert timing. The range of selectable alert timings may not be appropriate for all drivers and driving conditions. Unnecessary Alerts FCA may provide unnecessary alerts to turning vehicles, vehicles in other lanes, objects that are not vehicles, or shadows. These alerts are normal operation and the vehicle does not need service. Cleaning the System If the FCA system does not seem to operate properly, cleaning the outside of the windshield area in front of the camera sensor may correct the issue.

Parking Assist If available, the Rear Parking Assist (RPA) system assists the driver with parking and avoiding objects while in R (Reverse). RPA operates at speeds less than 8 km/h (5 mph).

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Driving and Operating

When the System Does Not Seem to Work Properly The following messages may be displayed on the DIC: SERVICE PARK ASSIST: message occurs, take the vehicle to your dealer to repair the system. PARK ASST BLOCKED SEE OWNERS MANUAL: This message can occur under the following conditions:

If this

The sensors are not clean. Keep the vehicle's rear bumper free of mud, dirt, snow, ice, and slush. For cleaning instructions, see Exterior Care on page 10-75. The sensors are covered by frost or ice. Frost or ice can form around and behind the sensors and may not always be seen; this can occur after washing the vehicle in cold weather. The message may not clear until the frost or ice has melted.

. A trailer was attached to the

vehicle, or an object was hanging out of the liftgate during the last drive cycle. Once the object is removed, RPA will return to normal operation. . A tow bar is attached to the

vehicle. The bumper is damaged. Take the vehicle to your dealer to repair the system.

. Other conditions, such as

vibrations from a jackhammer or the compression of air brakes on a very large truck, are affecting system performance.

Side Blind Zone Alert (SBZA) If equipped, the Side Blind Zone Alert system is a lane-changing aid that assists drivers with avoiding crashes that occur with vehicles in the side blind zone (or spot) areas. The SBZA warning display will light

up in the corresponding outside side mirror and will flash if the turn signal is on.

{ Warning

SBZA does not alert the driver to vehicles rapidly approaching outside of the side blind zones, pedestrians, bicyclists, or animals. It may not provide alerts when changing lanes under all driving conditions. Failure to use proper care when changing lanes may result in injury, death, or vehicle damage. Before making a lane change, always check mirrors, glance over your shoulder, and use the turn signals.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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Driving and Operating

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SBZA Detection Zones

over that is in the side blind zone. This indicates it may be unsafe to change lanes. Before making a lane change, check the SBZA display, check mirrors, glance over your shoulder, and use the turn signals.

The SBZA sensor covers a zone of approximately one lane over from both sides of the vehicle, or 3.5 m (11 ft). The height of the zone is approximately between 0.5 m (1.5 ft) and 2 m (6 ft) off the ground. This zone starts at approximately the middle of the vehicle and goes back 5 m (16 ft). How the System Works The SBZA symbol lights up in the side mirrors when the system detects a vehicle in the next lane

Left Side Mirror

Right Side Mirror

Display

Display

When the vehicle is started, both outside mirror SBZA displays will briefly come on to indicate the system is operating. When the vehicle is moving forward, the left- or right-side mirror display will light up if a vehicle is detected in that blind zone. If the turn signal is activated in the same direction of a detected vehicle, this display will flash as an extra warning not to change lanes.

SBZA can be disabled through the Driver Information Center (DIC). See Driver Information Center (DIC) on page 5-23. If SBZA is disabled by the driver, the SBZA mirror displays will not light up. When the System Does Not Seem to Work Properly SBZA displays may not come on when passing a vehicle quickly or when towing a trailer. Keep in mind the SBZA detection zones that extend back from the side of the vehicle do not move further back when a trailer is towed. Use extra caution while changing lanes when towing a trailer. SBZA may alert you to objects attached to the vehicle, such as a trailer, bicycle, or object extending out to either side of the vehicle. This is normal system operation; the vehicle does not need service. SBZA may not always alert the driver to vehicles in the side blind zone, especially in wet conditions. The system does not need to be

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Driving and Operating

serviced. The system may light up due to guardrails, signs, trees, shrubs, and other non-moving objects. This is normal system operation; the vehicle does not need service. SBZA may not operate when the SBZA sensors in the left or right corners of the rear bumper are covered with mud, dirt, snow, ice, or slush, or in heavy rainstorms. For cleaning instructions, see "Washing the Vehicle" under Exterior Care on page 10-75. If the DIC still displays the system unavailable message after cleaning both sides of the vehicle toward the rear corners of the vehicle, see your dealer. If the SBZA displays do not light up when vehicles are in the blind zone and the system is clean, the system may need service. Take the vehicle to your dealer.

When SBZA is disabled for any reason other than the driver turning it off, the Side Blind Zone Alert ON option will not be available on the DIC menu. FCC Information See Radio Frequency Statement on page 13-12.

Rear Vision Camera (RVC) The vehicle may have an RVC system. Read this entire section before using it.

{ Warning

The RVC system does not display children, pedestrians, bicyclists, crossing traffic, animals, or any other object located outside the camera's field of view, below the bumper, or under the vehicle. Perceived distances may be

(Continued)

Warning (Continued)

different from actual distances. Do not back the vehicle using only the RVC screen. Failure to use proper care before backing may result in injury, death, or vehicle damage. Always check behind and around the vehicle before backing.

The RVC system is designed to help the driver when backing up by displaying a view of the area behind the vehicle. When the driver shifts the vehicle into R (Reverse), the video image automatically appears on the infotainment screen. Once the driver shifts out of R (Reverse), the screen will go back to the last screen that had been displayed, after a delay.

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Driving and Operating

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The RVC display remains on after shifting out of R (Reverse) for approximately 10 seconds. Return to the previous screen sooner by performing one of the following: . Press a hard key on the

infotainment system.

. Shift into P (Park). . Reach a vehicle speed of

8 km/h (5 mph).

Symbols and Guidelines The RVC system may have a feature that lets the driver view caution symbols on the RVC screen while using the RVC. The Rear Parking Assist (RPA) system must not be disabled to use these symbols. See Parking Assist on page 9-35. The caution symbols appear when an object has been detected by the RPA system. The symbol may cover the object when viewing the RVC screen.

The RVC system may have a guideline overlay that can help the driver align the vehicle when backing into a parking spot. To turn the symbols and guidelines on or off: 1. Shift into P (Park). 2. Press Settings on the Home

screen of the infotainment system.

3. Select Display and then Rear

Camera.

4. Select Symbols or Guidelines.

When a checkmark appears next to the item, it is on.

Rear Cross Traffic Alert (RCTA) On vehicles with RCTA, a red warning triangle with an arrow may also display on the RVC screen to warn of traffic coming from either direction, behind the vehicle. When an object is detected, three beeps sound on the left or right side, depending on the direction of the detected vehicle. This system

detects objects coming from up to 20 m (65 ft) from the left or right side behind the vehicle. Use caution while backing up when towing a trailer, as the RCTA detection zones that extend out from the back of your vehicle do not move further back when a trailer is towed. The RCTA system can be disabled through the Driver Information Center (DIC). See Driver Information Center (DIC) on page 5-23. Rear Vision Camera Location The camera is located above the license plate. The area displayed by the camera is limited and does not display objects that are close to either corner or under the bumper. The area displayed can vary depending on vehicle orientation or road conditions. Displayed images may be farther or closer than they appear.

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Driving and Operating

The following illustrations show the field of view that the camera provides.

1. View displayed by the

camera.

1. View displayed by the

camera.

2. Corner of the rear bumper. When the System Does Not Seem To Work Properly The RVC system might not work properly or display a clear image if:

It is dark. The sun or the beam of headlamps is shining directly into the camera lens. Ice, snow, mud, or anything else builds up on the camera lens. Clean the lens, rinse it with water, and wipe it with a soft cloth. The back of the vehicle is in an accident. The position and mounting angle of the camera can change or the camera can be affected. Be sure to have the camera and its position and mounting angle checked at your dealer.

There are extreme temperature changes.

Lane Departure Warning (LDW) If equipped, LDW may help avoid crashes due to unintentional lane departures. It may provide an alert if the vehicle is crossing a lane without using a turn signal in that direction. LDW uses a camera sensor to detect the lane markings at speeds of 56 km/h (35 mph) or greater.

{ Warning

The LDW system does not steer the vehicle. The LDW system may not:

. Provide enough time to avoid

a crash.

. Detect lane markings under

poor weather or visibility conditions. This can occur if

(Continued)

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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Warning (Continued)

Warning (Continued)

the windshield or headlamps are blocked by dirt, snow, or ice; if they are not in proper condition; or if the sun shines directly into the camera.

. Detect road edges. . Detect lanes on winding or

hilly roads.

If LDW only detects lane markings on one side of the road, it will only warn you when departing the lane on the side where it has detected a lane marking. Always keep your attention on the road and maintain proper vehicle position within the lane, or vehicle damage, injury, or death could occur. Always keep the windshield, headlamps, and

(Continued)

camera sensors clean and in good repair. Do not use LDW in bad weather conditions.

How the System Works The LDW camera sensor is on the windshield ahead of the rearview mirror. To turn LDW on and off, press @ on the center stack, forward of the shift lever. The control indicator will light when LDW is on.

When LDW is on, @ is green if LDW is available to warn of a lane departure. If the vehicle crosses a detected lane marking without using

Driving and Operating

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the turn signal in that direction, @ changes to amber and flashes. Additionally, there will be three beeps on the right or left, depending on the lane departure direction. When the System Does Not Seem to Work Properly The system may not detect lanes as well when there are: . Close vehicles ahead. . Sudden lighting changes, such

as when driving through tunnels.

. Banked roads. If the LDW system is not functioning properly when lane markings are clearly visible, cleaning the windshield may help. LDW alerts may occur due to tar marks, shadows, cracks in the road, temporary or construction lane markings, or other road imperfections. This is normal system operation; the vehicle does not need service. Turn LDW off if these conditions continue.

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Driving and Operating

Fuel Use of the recommended fuel is an important part of the proper maintenance of this vehicle. When driving in the U.S. and Canada, to help keep the engine clean and maintain optimum vehicle performance, we recommend using TOP TIER Detergent Gasolines. See www.toptiergas.com for a list of TOP TIER Detergent Gasolines.

Use regular unleaded gasoline meeting ASTM specification D4814
with a posted octane rating of 87 or

{ Caution

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, mainly high octane racing gasolines, can contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). Do not use gasolines and/or fuel additives with MMT as they can reduce spark plug life and affect emission control system performance. The malfunction indicator lamp may turn on. If this occurs, see your dealer for service.

higher. Do not use gasoline with an octane rating below 87, as it may cause engine damage and will lower fuel economy.

Use of Seasonal Fuels Use summer and winter fuels in the appropriate season. The fuels industry automatically modifies the fuel for the appropriate season. If fuel is left in the vehicle tank for long periods of time, driving or starting could be affected. Drive the vehicle until the fuel is at one-half tank or less, then refuel with the current seasonal fuel.

Prohibited Fuels Gasolines containing oxygenates such as ethers and ethanol, as well as reformulated gasolines, are available in some cities. If these gasolines comply with the previously described specification, then they are acceptable to use. However, E85 (85% ethanol) and other fuels containing more than 15% ethanol must be used only in FlexFuel vehicles.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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California Fuel Requirements If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel is not available in states adopting California Emissions Standards, the vehicle will operate satisfactorily on fuels meeting federal specifications, but emission control system performance might be affected. The malfunction indicator lamp could turn on and the vehicle may not pass a smog-check test. See Malfunction Indicator Lamp on page 5-15. If this occurs, return to your authorized dealer for diagnosis. If it is determined that the condition is caused by the type of fuel used, repairs may not be covered by the vehicle warranty.

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Fuels in Foreign Countries If planning to drive in countries outside the U.S. or Canada, the proper fuel might be hard to find. Check regional auto club or fuel retail brand websites for availability in the country where driving. Never use leaded gasoline, fuel containing methanol, manganese, or any other fuel not recommended. Costly repairs caused by use of improper fuel would not be covered by the vehicle warranty.

Fuel Additives To keep fuel systems clean, TOP TIER Detergent Gasoline is recommended. See Fuel on page 9-42. If TOP TIER Detergent Gasoline is not available, one bottle of Fuel System Treatment PLUS added to the fuel tank at every engine oil change, can help. Fuel System Treatment PLUS is the only

gasoline additive recommended by General Motors. It is available at your dealer.

Filling the Tank

{ Warning

Fuel vapors and fuel fires burn violently and can cause injury or death.

. To help avoid injuries to you and others, read and follow all the instructions on the fuel pump island.

. Turn off the engine when

refueling.

. Keep sparks, flames, and

smoking materials away from fuel.

. Do not leave the fuel pump

unattended.

. Do not reenter the vehicle

while pumping fuel.

(Continued)

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Driving and Operating

Warning (Continued)

. Keep children away from the

fuel pump and never let children pump fuel.

. Fuel can spray out if the fuel

cap is opened too quickly. This spray can happen if the tank is nearly full, and is more likely in hot weather. Open the fuel cap slowly and wait for any hiss noise to stop then unscrew the cap all the way.

Be careful not to spill fuel. Do not top off or overfill the tank and wait a few seconds after you have finished pumping before removing the nozzle. Clean fuel from painted surfaces as soon as possible. See Exterior Care on page 10-75. When replacing the fuel cap, turn it clockwise until it clicks. Make sure the cap is fully installed. If the cap is not properly installed, the malfunction indicator lamp may come on. See Malfunction Indicator Lamp on page 5-15.

{ Warning

If a fire starts while you are refueling, do not remove the nozzle. Shut off the flow of fuel by shutting off the pump or by notifying the station attendant. Leave the area immediately.

The fuel cap is behind a hinged fuel door on the driver side of the vehicle. To open the fuel door, push and release the rearward center edge of the door. To remove the fuel cap, turn it slowly counterclockwise. The fuel cap has a spring in it; if the cap is released too soon, it will spring back to the right. While refueling, hang the fuel cap from the hook on the fuel door.

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{ Caution

If a new fuel cap is needed, be sure to get the right type of cap from your dealer. The wrong type of fuel cap may not fit properly, may cause the malfunction indicator lamp to light, and could damage the fuel tank and emissions system. See Malfunction Indicator Lamp on page 5-15.

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Warning (Continued)

. Place the nozzle inside the fill

opening of the container before dispensing fuel, and keep it in contact with the fill opening until filling is complete.

. Fill the container no more than 95% full to allow for expansion.

. Do not smoke, light matches,

or use lighters while pumping fuel.

. Avoid using cell phones or

other electronic devices.

Filling a Portable Fuel Container

{ Warning

Filling a portable fuel container while it is in the vehicle can cause fuel vapors that can ignite either by static electricity or other means. You or others could be badly burned and the vehicle could be damaged. Always:

. Use approved fuel

containers.

. Remove the container from the vehicle, trunk, or pickup bed before filling.

. Place the container on the

ground.

(Continued)

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Driving and Operating

Trailer Towing

General Towing Information Only use towing equipment that has been designed for the vehicle. Contact your dealer or trailering dealer for assistance with preparing the vehicle for towing a trailer. Read the entire section before towing a trailer. For towing a disabled vehicle, see Towing the Vehicle on page 10-72. For towing the vehicle behind another vehicle such as a motor home, see Recreational Vehicle Towing on page 10-72.

Driving Characteristics and Towing Tips

Driving with a Trailer When towing a trailer: . Become familiar with the state

and local laws that apply specifically to trailer towing.

. Do not tow a trailer during the

first 800 km (500 mi), to prevent damage to the engine, axle or other parts. Then, during the first 800 km (500 mi) trailer towing, do not drive over 80 km/h (50 mph) and do not make starts at full throttle. The vehicle can tow in D (Drive) but M (Manual Mode) is recommended. See Manual Mode on page 9-24. Use a lower gear if the transmission shifts too often. Turn off Park Assist when towing.

{ Warning

When towing a trailer, exhaust gases may collect at the rear of the vehicle and enter if the liftgate, trunk/hatch, or rear-most window is open. When towing a trailer:

. Do not drive with the liftgate,

trunk/hatch, or rear-most window open.

. Fully open the air outlets on

or under the instrument panel.

. Also adjust the Climate

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 9-21.

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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. Towing with a Stability Control System When towing, the sound of the stability control system might be heard. The system is reacting to the vehicle movement caused by the

trailer, which mainly occurs during cornering. This is normal when towing heavier trailers. 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 situations that require heavy braking and sudden turns. Passing More passing distance is needed when towing a trailer. Because the rig is longer, it is necessary to go 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 your 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.

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Making Turns

{ Caution

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 so the trailer will not strike soft shoulders, curbs, road signs, trees or other objects. Use the turn signal well in advance and avoid jerky or sudden maneuvers. Turn Signals When Towing a Trailer The turn signal indicators on the instrument cluster flash whenever signaling a turn or lane change.

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Driving and Operating

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 cluster flash for turns even if the bulbs on the trailer are burned out. 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 have to be used so much that they would get hot and no longer work well. The vehicle can tow in D (Drive). Use a lower gear if the transmission shifts too often. The Tow/Haul Mode may be used if the transmission shifts too often. See Tow/Haul Mode on page 9-25.

When towing at high altitude on steep uphill grades, engine coolant boils 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 could show signs similar to engine overheating. To avoid this, let the engine run while parked, preferably on level ground, with the transmission in P (Park) for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating on page 10-16. 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 brake pedal 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

while you:

Start the engine. Shift into a gear. Release the parking brake.

2. Let up on the brake pedal.

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3. Drive slowly until the trailer is

clear of the chocks.

4. 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 the Maintenance Schedule on page 11-2. Things that are especially important in trailer operation are automatic transmission fluid, engine oil, axle lubricant, belts, cooling system and brake system. Inspect these before and during the trip. Check periodically to see that all hitch nuts and bolts are tight.

Driving and Operating

9-49

Engine Cooling When Trailer Towing The cooling system may temporarily overheat during severe operating conditions. See Engine Overheating on page 10-16.

Trailer Towing Three important considerations have to do with weight:

The weight of the trailer. The weight of the trailer tongue. The total weight on the vehicle's tires.

Weight of the Trailer How heavy can a trailer safely be? Speed, altitude, road grades, outside temperature, special equipment, and the amount of tongue weight the vehicle can carry must be considered. See “Weight of the Trailer Tongue” later in this section for more information. 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.

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9-50

Driving and Operating

Use the following chart to determine how much the vehicle can weigh, based upon the vehicle model and options.

Vehicle

Maximum Trailer Weight

*GCWR

Front-Wheel Drive Front-Wheel Drive, V92 Trailer Towing Package All-Wheel Drive All-Wheel Drive, V92 Trailer Towing Package *The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversions. The GCWR for the vehicle should not be exceeded.

3 402 kg (7,500 lb) 4 649 kg (10,250 lb) 3 493 kg (7,700 lb) 4 740 kg (10,450 lb)

907 kg (2,000 lb) 2 359 kg (5,200 lb) 907 kg (2,000 lb) 2 359 kg (5,200 lb)

Ask your dealer for trailering information or advice. 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 9-9.

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If a weight-carrying hitch or a weight-distributing hitch is being used, the trailer tongue (1) should weigh 10-15 percent 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. Trailering may be limited by the vehicle's ability to carry tongue weight. Tongue weight cannot cause the vehicle to exceed the GVWR (Gross Vehicle Weight Rating) or the RGAWR (Rear Gross Axle Weight Rating). The effect of additional weight may reduce the trailering capacity more than the total of the additional weight.

It is important that the vehicle does not exceed any of its ratings — GCWR, GVWR, RGAWR, Maximum Trailer Rating or Tongue Weight. The only way to be sure it is not exceeding any of these ratings is to weigh the vehicle and trailer. Total Weight on the Vehicle's Tires Inflate the vehicle's tires to the upper limit for cold tires. These numbers can be found on the Certification label or see Vehicle Load Limits on page 9-9 for more information. Do not go over the GVW limit for the vehicle, or the GAWR, including the weight of the trailer tongue. If using a weight distributing hitch, do not go over the rear axle limit before applying the weight distribution spring bars.

Driving and Operating

9-51

Towing Equipment

Hitches It is important to have the correct hitch equipment. Crosswinds, large trucks going by, and rough roads are a few reasons why the right hitch is needed.

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, then be sure to seal the holes when the hitch is removed. If the holes are not sealed, dirt, water, and deadly carbon monoxide (CO) from the exhaust may get into the vehicle. See Engine Exhaust on page 9-21.

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9-52

Driving and Operating

Weight-Distributing Hitches and Weight Carrying Hitches

1. Body-to-Ground Distance 2. Front of Vehicle When using a weight-distributing hitch, the hitch must be adjusted so that the distance (1) remains the same both before and after coupling the trailer to the tow vehicle.

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. Always leave just enough slack so the rig can turn. Never allow safety chains to drag on the ground. Trailer Brakes A loaded trailer that weighs more than 450 kg (1,000 lbs) needs to have its own brake system that is adequate for the weight of the trailer. 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 try to tap into the vehicle's hydraulic brake system. If you do, both brake systems will not work well, or at all.

Trailer Wiring Harness

Basic Trailer Wiring The trailer wiring harness, with a seven-pin connector, is located at the rear of the vehicle and is tied to the vehicle's frame. The harness connector can be plugged into a seven-pin universal heavy-duty trailer connector available through your dealer. The seven-wire harness contains the following trailer circuits: . Yellow: Left Stop/Turn Signal . Dark Green: Right Stop/Turn

Signal

. Brown: Taillamps . Black: Ground

Light Green: Back-up Lamps

. Red/Black: Battery Feed . Dark Blue: Trailer Brake*

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Driving and Operating

9-53

*The fuse for this circuit is installed in the underhood electrical center, but the wires are not connected. They should be connected by your dealer or a qualified service center. If the back-up lamp circuit is not functional, contact your dealer. If a remote (non-vehicle) battery is being charged, press the Tow/Haul mode switch located on the center console near the climate controls. This will boost the vehicle system voltage and properly charge the battery. If the trailer is too light for Tow/Haul mode, turn on the headlamps (non-HID only) as a second way to boost the vehicle system and charge the battery.

Electric Trailer Brake Control Wiring Provisions These wiring provisions for an electric trailer brake controller are included with the vehicle as part of the trailer wiring package. The instrument panel contains blunt cut wires above the parking brake assembly for the electric trailer brake controller. The harness contains the following wires: . Red/Black: Power Supply . White: Brake Switch Signal . Gray: Illumination . Dark Blue: Trailer Brake Signal . Black: Ground The electric trailer brake controller should be installed by your dealer or a qualified service center.

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 3-34 and Adding Equipment to the Airbag-Equipped Vehicle on page 3-34.

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9-54

Driving and Operating

2 NOTES

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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Vehicle Care

General Information

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

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

California Perchlorate

Materials Requirements . . . . 10-2

Accessories and

Modifications . . . . . . . . . . . . . . . 10-2

Vehicle Checks Doing Your Own

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

Overview . . . . . . . . . . . . . . . . . . . 10-5
Engine Cover . . . . . . . . . . . . . . . . 10-6
Engine Oil . . . . . . . . . . . . . . . . . . . 10-7
Engine Oil Life System . . . . . . 10-9
Automatic Transmission

Fluid . . . . . . . . . . . . . . . . . . . . . . 10-10
Engine Air Cleaner/Filter . . . . 10-10
Cooling System . . . . . . . . . . . . . 10-11
Engine Coolant . . . . . . . . . . . . . 10-12
Engine Overheating . . . . . . . . 10-16

Overheated Engine

Protection Operating Mode . . . . . . . . . . . 10-18
Power Steering Fluid . . . . . . . 10-18
Washer Fluid . . . . . . . . . . . . . . . 10-19
Brakes . . . . . . . . . . . . . . . . . . . . . 10-20
Brake Fluid . . . . . . . . . . . . . . . . . 10-21
Battery . . . . . . . . . . . . . . . . . . . . . 10-22
All-Wheel Drive . . . . . . . . . . . . . 10-23
Starter Switch Check . . . . . . . 10-23
Automatic Transmission Shift

Lock Control Function Check . . . . . . . . . . . . . . . . . . . . . 10-23

Ignition Transmission Lock

Check . . . . . . . . . . . . . . . . . . . . . 10-23

Park Brake and P (Park)

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

Wiper Blade

Replacement . . . . . . . . . . . . . . 10-24
Windshield Replacement . . . 10-25

Headlamp Aiming

Headlamp Aiming . . . . . . . . . . 10-25

Bulb Replacement

Bulb Replacement . . . . . . . . . . 10-26
LED Lighting . . . . . . . . . . . . . . . 10-26
License Plate Lamp . . . . . . . . 10-26
Replacement Bulbs . . . . . . . . . 10-26

Vehicle Care

10-1

Electrical System

High Voltage Devices and

Wiring . . . . . . . . . . . . . . . . . . . . . 10-27

Electrical System

Overload . . . . . . . . . . . . . . . . . . 10-27

Fuses and Circuit

Breakers . . . . . . . . . . . . . . . . . . 10-28

Engine Compartment Fuse

Block . . . . . . . . . . . . . . . . . . . . . 10-28

Instrument Panel Fuse

Block . . . . . . . . . . . . . . . . . . . . . 10-34

Wheels and Tires

Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-37
All-Season Tires . . . . . . . . . . . . 10-38
Winter Tires . . . . . . . . . . . . . . . . 10-38
Summer Tires . . . . . . . . . . . . . . 10-39
Tire Sidewall Labeling . . . . . . 10-39
Tire Designations . . . . . . . . . . . 10-41
Tire Terminology and

Definitions . . . . . . . . . . . . . . . . 10-42
Tire Pressure . . . . . . . . . . . . . . . 10-45
Tire Pressure Monitor

System . . . . . . . . . . . . . . . . . . . 10-46

Tire Pressure Monitor

Operation . . . . . . . . . . . . . . . . . 10-47
Tire Inspection . . . . . . . . . . . . . . 10-50
Tire Rotation . . . . . . . . . . . . . . . 10-51

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10-2

Vehicle Care

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:

When It Is Time for New

Tires . . . . . . . . . . . . . . . . . . . . . . 10-52
Buying New Tires . . . . . . . . . . . 10-53
Different Size Tires and

Wheels . . . . . . . . . . . . . . . . . . . 10-54

Uniform Tire Quality

Grading . . . . . . . . . . . . . . . . . . . 10-55

Wheel Alignment and Tire

Balance . . . . . . . . . . . . . . . . . . . 10-56
Wheel Replacement . . . . . . . . 10-57
Tire Chains . . . . . . . . . . . . . . . . . 10-57
If a Tire Goes Flat . . . . . . . . . . 10-58
Tire Changing . . . . . . . . . . . . . . 10-59
Compact Spare Tire . . . . . . . . 10-68

Jump Starting

Jump Starting . . . . . . . . . . . . . . 10-69

Towing the Vehicle

Towing the Vehicle . . . . . . . . . 10-72
Recreational Vehicle

Towing . . . . . . . . . . . . . . . . . . . . 10-72

Appearance Care

Exterior Care . . . . . . . . . . . . . . . 10-75
Interior Care . . . . . . . . . . . . . . . . 10-80
Floor Mats . . . . . . . . . . . . . . . . . . 10-83

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

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

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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Vehicle Care

10-3

This vehicle has an airbag system. Before attempting to do your own service work, see Servicing the Airbag-Equipped Vehicle on page 3-34. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Records on page 11-14.

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

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 3-34.

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

Hood To open the hood:

1. Pull the hood release handle

with this symbol on it. It is under the instrument panel on the driver side of the vehicle.

Before closing the hood, be sure all filler caps are on properly. Pull the hood down to close. Lower the hood until the lifting pressure of the strut is reduced. Then allow the hood to fall and latch into place under its own weight. Check to make sure the hood is closed. If the hood does not fully latch, gently push the hood down at the front and center of the hood until it is completely latched.

2. At the front of the vehicle, pull up on the center of the hood, and push the secondary hood release to the right.

3. After you have partially lifted the

hood, gas struts will automatically take over to lift and hold the hood in the fully open position.

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Engine Compartment Overview

Vehicle Care

10-5

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-7576030) - 2015 - CRC - 8/18/14

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10-6

Vehicle Care

1. Remote Negative (−) Terminal.

See Jump Starting on page 10-69.

2. Engine Compartment Fuse

Block on page 10-28.

3. Radiator Pressure Cap (Out of View). See Cooling System on page 10-11.

4. Engine Coolant Recovery Cap.

See Cooling System on page 10-11.

5. Remote Positive (+) Terminal.

See Jump Starting on page 10-69.

6. Power Steering Reservoir and

Cap (Under Engine Cover). See Power Steering Fluid on page 10-18.

7. Engine Oil Fill Cap. See “When to Add Engine Oil” under Engine Oil on page 10-7.

8. Engine Oil Dipstick (Out of

View). See “Checking Engine Oil” under Engine Oil on page 10-7.

9. Engine Cooling Fans (Out of

View). See Cooling System on page 10-11.

10. Engine Cover on page 10-6. 11. Brake Fluid Reservoir. See

“Brake Fluid” under Brakes on page 10-20.

12. Windshield Washer Fluid

Reservoir. See “Adding Washer Fluid” under Washer Fluid on page 10-19.

13. Engine Air Cleaner/Filter on

page 10-10.

Engine Cover

1. Oil Fill Cap 2. Engine Cover

To remove: 1. Remove the oil fill cap (1). 2. Raise the engine cover (2) to release it from the retainers.

3. Lift and remove the engine

cover.

4. Reverse Steps 1–3 to reinstall

engine cover.

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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 10-9.

. 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.

Vehicle Care

10-7

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

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.

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10-8

Vehicle Care

{ 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 cross-hatched area 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.

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 11-12.

Specification Ask for and use engine oils that meet the dexos1™ specification. Engine oils that have been approved by GM as meeting the dexos1 specification are marked with the dexos1 approved logo. See www.gmdexos.com.

{ 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. 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. 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.

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Engine Oil Additives/Engine Oil Flushes Do not add anything to the oil. The recommended oils meeting the dexos1 specification 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