2012 GMC Savana Owners Manual

Besides slowing down, other wet weather driving tips include: . Allow extra following distance. . Pass with caution. . Keep windshield wiping

equipment in good shape.

. Keep the windshield washer fluid

reservoir filled.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (7,1)

. Have good tires with proper

tread depth. See Tires on page 10‑50. Turn off cruise control.

Highway Hypnosis Always be alert and pay attention to your surroundings while driving. If you become tired or sleepy, find a safe place to park the vehicle and rest. Other driving tips include: . Keep the vehicle well ventilated. . Keep the interior temperature cool.

. Keep your eyes moving — scan the road ahead and to the sides.

. Check the rearview mirror and

vehicle instruments often.

Hill and Mountain Roads Driving on steep hills or through mountains is different than driving on flat or rolling terrain. Tips for driving in these conditions include: . Keep the vehicle serviced and in

good shape.

. Check all fluid levels and brakes,

tires, cooling system, and transmission.

. Shift to a lower gear when going

down steep or long hills. { WARNING

If you do not shift down, the brakes could get so hot that they would not work well. You would then have poor braking or even none going down a hill. You could crash. Shift down to let the engine assist the brakes on a steep downhill slope.

Driving and Operating

9-7

{ WARNING

Coasting downhill in N (Neutral) or with the ignition off is dangerous. The brakes will have to do all the work of slowing down and they could get so hot that they would not work well. You would then have poor braking or even none going down a hill. You could crash. Always have the engine running and the vehicle in gear when going downhill.

. Stay in your own lane. Do not swing wide or cut across the center of the road. Drive at speeds that let you stay in your own lane.

. Be alert on top of hills;

something could be in your lane (stalled car, accident).

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (8,1)

9-8

Driving and Operating

. Pay attention to special road

signs (falling rocks area, winding roads, long grades, passing or no-passing zones) and take appropriate action.

Winter Driving

Driving on Snow or Ice Drive carefully when there is snow or ice between the tires and the road, creating less traction or grip. Wet ice can occur at about 0°C (32°F) when freezing rain begins to fall, resulting in even less traction. Avoid driving on wet ice or in freezing rain until roads can be treated with salt or sand. Drive with caution, whatever the condition. Accelerate gently so traction is not lost. Accelerating too quickly causes the wheels to spin and makes the surface under the tires slick, so there is even less traction.

Try not to break the fragile traction. If you accelerate too fast, the drive wheels will spin and polish the surface under the tires even more. The Antilock Brake System (ABS) on page 9‑33 improves vehicle stability during hard stops on a slippery roads, but apply the brakes sooner than when on dry pavement. Allow greater following distance on any slippery road and watch for slippery spots. Icy patches can occur on otherwise clear roads in shaded areas. The surface of a curve or an overpass can remain icy when the surrounding roads are clear. Avoid sudden steering maneuvers and braking while on ice. Turn off cruise control, if equipped, on slippery surfaces.

Blizzard Conditions Being stuck in snow can be a serious situation. Stay with the vehicle unless there is help nearby. If possible, use the Roadside Assistance Program on page 13‑5. To get help and keep everyone in the vehicle safe:

Turn on the hazard warning flashers. Tie a red cloth to an outside mirror.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (9,1)

{ WARNING

Snow can trap engine exhaust under the vehicle. This may cause exhaust gases to get inside. Engine exhaust contains carbon monoxide (CO) which cannot be seen or smelled. It can cause unconsciousness and even death. If the vehicle is stuck in the snow: . Clear away snow from around

the base of your vehicle, especially any that is blocking the exhaust pipe and/or the fuel operated heater exhaust system, if equipped. If the vehicle has a diesel engine and a fuel operated heater, see “Fuel Operated Heater (FOH)” in the diesel engine supplement.

. Check again from time to

time to be sure snow does not collect there.

(Continued)

Driving and Operating

9-9

WARNING (Continued)

WARNING (Continued)

cannot see it or smell it, so you might not know it is in the vehicle. Clear away snow from around the base of the vehicle, especially any that is blocking the exhaust.

Run the engine for short periods only as needed to keep warm, but be careful. To save fuel, run the engine for only short periods as needed to warm the vehicle and then shut the engine off and close the window most of the way to save heat. Repeat this until help arrives but only when you feel really uncomfortable from the cold. Moving about to keep warm also helps.

. Open a window about 5 cm

(2 in) on the side of the vehicle that is away from the wind to bring in fresh air.

. Fully open the air outlets on

or under the instrument panel.

. Adjust the Climate Control

system to a setting that circulates the air inside the vehicle and set the fan speed to the highest setting. See Climate Control Systems in the Index.

For more information about carbon monoxide, see Engine Exhaust on page 9‑24. Snow can trap exhaust gases under the vehicle. This can cause deadly CO (carbon monoxide) gas to get inside. CO could overcome you and kill you. You

(Continued)

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (10,1)

9-10

Driving and Operating

If it takes some time for help to arrive, now and then when you run the engine, push the accelerator pedal slightly so the engine runs faster than the idle speed. This keeps the battery charged to restart the vehicle and to signal for help with the headlamps. Do this as little as possible to save fuel.

If the Vehicle Is Stuck Slowly and cautiously spin the wheels to free the vehicle when stuck in sand, mud, ice, or snow. If the vehicle has a traction system, it can often help to free a stuck vehicle. Refer to the vehicle's traction system in the Index. If stuck too severely for the traction system to free the vehicle, turn the traction system off and use the rocking method.

{ WARNING

If the vehicle's tires spin at high speed, they can explode, and you or others could be injured. The vehicle can overheat, causing an engine compartment fire or other damage. Spin the wheels as little as possible and avoid going above 56 km/h (35 mph).

See Tire Chains on page 10‑71. Rocking the Vehicle to Get It Out Turn the steering wheel left and right to clear the area around the front wheels. Turn off any traction or stability system. Shift back and forth between R (Reverse) and a forward gear, spinning the wheels as little as possible. To prevent transmission wear, wait until the wheels stop spinning before shifting gears. Release the accelerator pedal while shifting, and press lightly on the accelerator pedal when the

transmission is in gear. Slowly spinning the wheels in the forward and reverse directions causes a rocking motion that could free the vehicle. If that does not get the vehicle out after a few tries, it might need to be towed out. See Towing the Vehicle on page 10‑89.

Vehicle Load Limits It is very important to know how much weight the vehicle can carry. This weight is called the vehicle capacity weight and includes the weight of all occupants, cargo, and all nonfactory-installed options. Two labels on the vehicle show how much weight it was designed to carry, the Tire and Loading Information label and the Certification/Tire label.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (11,1)

{ WARNING

Tire and Loading Information Label

Do not load the vehicle any heavier than the Gross Vehicle Weight Rating (GVWR), or either the maximum front or rear Gross Axle Weight Rating (GAWR). This can cause systems to break and change the way the vehicle handles. This could cause loss of control and a crash. Overloading can also shorten the life of the vehicle.

Label Example

A vehicle specific Tire and Loading Information label is attached to the center pillar (B-pillar). With the driver door open, you will find the label attached below the door lock post (striker). The tire and loading information label shows the number of occupant seating

Driving and Operating

9-11

positions (A), and the maximum vehicle capacity weight (B) in kilograms and pounds. The Tire and Loading Information label also shows the size of the original equipment tires (C) and the recommended cold tire inflation pressures (D). For more information on tires and inflation see Tires on page 10‑50 and Tire Pressure on page 10‑57. There is also important loading information on the vehicle Certification/Tire label. It tells you the Gross Vehicle Weight Rating (GVWR) and the Gross Axle Weight Rating (GAWR) for the front and rear axle. See “Certification/Tire Label” later in this section.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (12,1)

9-12

Driving and Operating

Steps for Determining Correct Load Limit 1. Locate the statement

“The combined weight of occupants and cargo should never exceed XXX kg or XXX lbs” on your vehicle's placard.

2. Determine the combined weight of the driver and passengers that will be riding in your vehicle.

3. Subtract the combined weight of the driver and passengers from XXX kg or XXX lbs.

4. The resulting figure equals

the available amount of cargo and luggage load capacity. For example, if the “XXX” amount equals 1400 lbs and there will be five 150 lb passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lbs (1400 − 750 (5 x 150) = 650 lbs).

5. Determine the combined

weight of luggage and cargo being loaded on the vehicle. That weight may not safely exceed the available cargo and luggage load capacity calculated in Step 4.

6.

If your vehicle will be towing a trailer, the load from your trailer will be transferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle. See Trailer Towing on page 9‑50 for important information on towing a trailer, towing safety rules and trailering tips.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (13,1)

Driving and Operating

9-13

Example 1

Example 2

Example 3

A. Vehicle Capacity Weight for

Example 1 = 453 kg (1,000 lbs)

A. Vehicle Capacity Weight for

Example 2 = 453 kg (1,000 lbs)

B. Subtract Occupant Weight @

B. Subtract Occupant Weight @

68 kg (150 lbs) × 2 = 136 kg (300 lbs)

68 kg (150 lbs) × 5 = 136 kg (750 lbs)

C. Available Occupant and Cargo

C. Available Cargo Weight =

Weight = 317 kg (700 lbs)

113 kg (250 lbs)

A. Maximum Vehicle Capacity

Weight for Example 3 = 453 kg (1,000 lbs)

B. Subtract Occupant Weight @

91 kg (200 lbs) × 5 = 453 kg (1,000 lbs)

C. Available Cargo Weight =

0 kg (0 lbs)

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (14,1)

9-14

Driving and Operating

Certification/Tire Label

Refer to the vehicle tire and loading information label for specific information about the vehicle's capacity weight and seating positions. The combined weight of the driver, passengers, and cargo should never exceed the vehicle capacity weight.

A vehicle specific Certification/ Tire label is found on the rear edge of the driver door. The label shows the size of the vehicle's original tires and the inflation pressures needed to obtain the gross weight capacity of the vehicle. This is called

Gross Vehicle Weight Rating (GVWR). The GVWR includes the weight of the vehicle, all occupants, fuel, and cargo. The Certification/Tire label also tells you the maximum weights for the front and rear axles, called Gross Axle Weight Rating (GAWR). To find out the actual loads on the front and rear axles, you need to go to a weigh station and weigh the vehicle. Your dealer can help you with this. Be sure to spread out the load equally on both sides of the centerline. Never exceed the GVWR for the vehicle, or the GAWR for either the front or rear axle.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (15,1)

If there is a heavy load, it should be spread out.

{ WARNING

{ WARNING

Do not load the vehicle any heavier than the Gross Vehicle Weight Rating (GVWR), or either the maximum front or rear Gross Axle Weight Rating (GAWR). This can cause systems to break and change the way the vehicle handles. This could cause loss of control and a crash. Overloading can also shorten the life of the vehicle.

Things you put inside the vehicle can strike and injure people in a sudden stop or turn, or in a crash.

. Put things in the cargo

area of the vehicle. Try to spread the weight evenly.

. Never stack heavier

things, like suitcases, inside the vehicle so that some of them are above the tops of the seats.

. Do not leave an

unsecured child restraint in the vehicle.

(Continued)

Driving and Operating

9-15

WARNING (Continued)

. When you carry something

inside the vehicle, secure it whenever you can.

. Do not leave a seat folded down unless you need to.

Add-On Equipment When you carry removable items, you may need to put a limit on how many people you carry inside the vehicle. Be sure to weigh the vehicle before you buy and install the new equipment.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (16,1)

9-16

Driving and Operating

Starting and Operating

New Vehicle Break-In Notice: The vehicle does not need an elaborate break-in. But it will perform better in the long run if you follow these guidelines: . Keep the vehicle speed at

88 km/h (55 mph) or less for the first 805 km (500 miles).

. Do not drive at any one

constant speed, fast or slow, for the first 805 km (500 miles). Do not make full-throttle starts. Avoid downshifting to brake or slow the vehicle.

. Avoid making hard stops for the first 322 km (200 miles) or so. During this time the new brake linings are not yet broken in. Hard stops with new linings can mean premature wear and earlier replacement. Follow this breaking-in guideline every time you get new brake linings.

. Do not tow a trailer during

break-in. See Trailer Towing on page 9‑50 for the trailer towing capabilities of the vehicle and more information.

Following break‐in, engine speed and load can be gradually increased.

Ignition Positions

The ignition switch has four different positions. To shift out of P (Park), the ignition must be in ON/RUN or ACC/ ACCESSORY and the regular brake pedal applied.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (17,1)

Driving and Operating

9-17

A (STOPPING THE ENGINE/ LOCK/OFF): When the vehicle is stopped, turn the ignition switch to LOCK/OFF to turn the engine off. Retained Accessory Power (RAP) will remain active. See Retained Accessory Power (RAP) on page 9‑21. This position locks the ignition and transmission. Do not turn the engine off when the vehicle is moving. This will cause a loss of power assist in the brake and steering systems and disable the airbags. If the vehicle must be shut off in an emergency: 1. Brake using a firm and steady

pressure. Do not pump the brakes repeatedly. This may deplete power assist, requiring increased brake pedal force.

2. Shift the vehicle to N (Neutral).

This can be done while the vehicle is moving. After shifting to N (Neutral), firmly apply the brakes and steer the vehicle to a safe location.

3. Come to a complete stop, shift to P (Park), and turn the ignition to LOCK/OFF. On vehicles with an automatic transmission, the shift lever must be in P (Park) to turn the ignition switch to the LOCK/OFF position.

4. Set the parking brake. See

Parking Brake on page 9‑34.

{ WARNING

Turning off the vehicle while moving may cause loss of power assist in the brake and steering systems and disable the airbags. While driving, only shut the vehicle off in an emergency.

If the vehicle cannot be pulled over, and must be shut off while driving, turn the ignition to ACC/ ACCESSORY. Notice: Using a tool to force the key to turn in the ignition could cause damage to the switch or break the key. Use the correct key, make sure it is all the way in, and turn it only with your hand. If the key cannot be turned by hand, see your dealer. B (ACC/ACCESSORY): This is the position in which you can operate things like the radio and the windshield wipers when the engine is off.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (18,1)

9-18

Driving and Operating

C (ON/RUN): This position can be used to operate the electrical accessories and to display some instrument panel cluster warning and indicator lights. This position can also be used for service and diagnostics, and to verify the proper operation of the malfunction indicator lamp as may be required for emission inspection purposes. The switch stays in this position when the engine is running. If you leave the key in the ACC/ ACCESSORY or ON/RUN position with the engine off, the battery could be drained. You may not be able to start the vehicle if the battery is allowed to drain for an extended period of time. D (START): This is the position that starts the engine. When the engine starts, release the key. The ignition switch returns to ON/RUN for driving.

A warning tone will sound when the driver door is opened, the ignition is in ACC/ACCESSORY or LOCK/OFF and the key is in the ignition.

Starting the Engine If the vehicle has a diesel engine, see the Duramax® diesel supplement for more information. To place the transmission in the proper gear: Move the shift lever to P (Park) or N (Neutral). The engine will not start in any other position. To restart the engine when the vehicle is already moving, use N (Neutral) only.

Starting Procedure 1. With your foot off the accelerator

pedal, turn the ignition key to START. When the engine starts, let go of the key. The idle speed will go down as your engine gets warm. Do not race the engine immediately after starting it. Operate the engine and

transmission gently to allow the oil to warm up and lubricate all moving parts. The vehicle has a Computer-Controlled Cranking System. This feature assists in starting the engine and protects components. If the ignition key is turned to the START position, and then released when the engine begins cranking, the engine will continue cranking for a few seconds or until the vehicle starts. If the engine does not start and the key is held in START for many seconds, cranking will be stopped after 15 seconds to prevent cranking motor damage. To prevent gear damage, this system also prevents cranking if the engine is already running. Engine cranking can be stopped by turning the ignition switch to the ACC/ACCESSORY or LOCK/ OFF position.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (19,1)

Driving and Operating

9-19

When the Low Fuel warning lamp is on and the FUEL LEVEL LOW message is displayed in the Driver Information Center (DIC), the Computer-Controlled Cranking System is disabled to prevent possible vehicle component damage. When this happens, hold the ignition switch in the START position to continue engine cranking.

Notice: Cranking the engine for long periods of time, by returning the key to the START position immediately after cranking has ended, can overheat and damage the cranking motor, and drain the battery. Wait at least 15 seconds between each try, to let the cranking motor cool down. 2.

If the engine does not start after 5-10 seconds, especially in very cold weather (below −18°C or 0°F), it could be flooded with too much gasoline. Try pushing the accelerator pedal all the way to

the floor and holding it there as you hold the key in START for up to 15 seconds. Wait at least 15 seconds between each try, to allow the cranking motor to cool down. When the engine starts, let go of the key and accelerator. If the vehicle starts briefly but then stops again, do the same thing. This clears the extra gasoline from the engine. Do not race the engine immediately after starting it. Operate the engine and transmission gently until the oil warms up and lubricates all moving parts.

Notice: If you add electrical parts or accessories, you could change the way the engine operates. Any resulting damage would not be covered by the vehicle warranty. See Add-On Electrical Equipment on page 9‑58.

Fast Idle System If the vehicle has this feature it is available only with cruise control. The manual fast idle switch is operated using the cruise control buttons located on the left hand side of the steering wheel. This system can be used to increase engine idle speed whenever the following conditions are met:

The park brake is set. The brake pedal is not pressed. The vehicle must not be moving and the accelerator must not be pressed.

To control the fast idle:

To enable the Fast Idle System, press and release the Cruise Control On/Off button and ensure that the switch LED is lit.

. Press and release the Cruise

Control Set switch. Engine speed will be held at approximately 1200 RPM.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (20,1)

9-20

Driving and Operating

When the fast idle is active the Driver Information Center (DIC) will display “FAST IDLE ON.” One of the following actions will turn off the fast idle: . Pressing the brake. . Selecting the Cruise Control

Cancel button.

. Releasing the Parking Brake. The transmission shift lever is moved out of P (Park) or N (Neutral).

. Selecting the Cruise Control On/

Off button when it was previously on.

. Pressing the Cruise Control Set

switch a second time.

. Pressing the accelerator greater than a quarter of the way down. Turning the ignition switch to the LOCK/OFF position.

Engine Heater If the vehicle has a diesel engine, see the Duramax diesel supplement for more information. The engine coolant heater can provide easier starting and better fuel economy during engine warm‐up in cold weather conditions at or below −18°C (0°F). Vehicles with an engine coolant heater should be plugged in at least four hours before starting. An internal thermostat in the plug-end of the cord may exist which will prevent engine coolant heater operation at temperatures above −18°C (0°F). To Use the Engine Coolant Heater 1. Turn off the engine. 2. Open the hood and unwrap the

electrical cord.

The cord for the engine coolant heater is located on the driver side of the engine compartment and is attached to the hose for the power steering reservoir.

3. Plug it into a normal, grounded

110-volt AC outlet.

{ WARNING Plugging the cord into an ungrounded outlet could cause an electrical shock. Also, the wrong kind of extension cord could overheat and cause a fire. You could be seriously injured. Plug the cord into a properly grounded three-prong 110-volt AC outlet. If the cord will not reach, use a heavy-duty three-prong extension cord rated for at least 15 amps.

4. Before starting the engine, be

sure to unplug and store the cord as it was before to keep it away from moving engine parts and prevent damage.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (21,1)

Driving and Operating

9-21

2. Move the shift lever into P (Park)

by pulling the shift lever toward you and moving it up as far as it will go.

3. Turn the ignition key to

LOCK/OFF.

4. Remove the key and take it with you. If you can leave the vehicle with the ignition key in your hand, the vehicle is in P (Park).

The length of time the heater should remain plugged in depends on several factors. Ask a dealer in the area where you will be parking the vehicle for the best advice on this.

Retained Accessory Power (RAP) These vehicle accessories can be used for up to 10 minutes after the engine is turned off: . Audio System . Power Windows (if equipped) These features will work when the ignition key is in ON/RUN or ACC/ ACCESSORY. Once the key is turned from ON/RUN to LOCK/OFF, power to the radio and power windows will continue to work 10 minutes or until the driver door is opened.

Shifting Into Park { WARNING

It can be dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, use the steps that follow. If you are pulling a trailer, see Driving Characteristics and Towing Tips on page 9‑46.

1. Hold the brake pedal down and

set the parking brake. See Parking Brake on page 9‑34.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (22,1)

9-22

Driving and Operating

Leaving the Vehicle With the Engine Running

{ WARNING

It can be dangerous to leave the vehicle with the engine running. The vehicle could move suddenly if the shift lever is not fully in P (Park) with the parking brake firmly set. And, if you leave the vehicle with the engine running, it could overheat and even catch fire. You or others could be injured. Do not leave the vehicle with the engine running.

If you have to leave the vehicle with the engine running, be sure the vehicle is in P (Park) and the parking brake is firmly set before you leave it. After you move the shift lever into P (Park), hold the regular brake pedal down. Then, see if you can move the shift lever away from P (Park) without first pulling it toward you. If you can, it means that the shift lever was not fully locked into P (Park). Torque Lock If you are parking on a hill and you do not shift the vehicle into P (Park) properly, the weight of the vehicle may put too much force on the parking pawl in the transmission. You may find it difficult to pull the shift lever out of P (Park). This is called torque lock. To prevent torque lock, set the parking brake and then shift into P (Park) properly before you leave the driver seat. To find out how, see “Shifting Into Park” previously in this section.

When you are ready to drive, move the shift lever out of P (Park) before you release the parking brake. If torque lock does occur, you may need to have another vehicle push yours a little uphill to take some of the pressure from the parking pawl in the transmission, so you can pull the shift lever out of P (Park).

Shifting out of Park The vehicle has an automatic transmission shift lock control system. You have to fully apply the brakes before you can shift from P (Park) when the ignition is in ON/ RUN or ACC/ACCESSORY. See Automatic Transmission (Six Speed) on page 9‑25 or Automatic Transmission (Four Speed) on page 9‑28.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (23,1)

Driving and Operating

9-23

Parking over Things That Burn

{ WARNING

Things that can burn could touch hot exhaust parts under the vehicle and ignite. Do not park over papers, leaves, dry grass, or other things that can burn.

The shift lock control system is designed to do the following: . Prevent the ignition key from

being removed unless the shift lever is in P (Park).

. Prevent movement of the shift

lever out of P (Park), unless the ignition is in ON/RUN or ACC/ ACCESSORY and the regular brake pedal is applied.

The shift lock control system is always functional except in the case of a dead battery or low voltage (less than 9 V) battery. If the vehicle has an uncharged battery or a battery with low voltage, try charging or jump starting the battery. See Jump Starting on page 10‑84 for more information.

To shift out of P (Park) use the following: 1. Apply the brake pedal. 2. Turn the ignition to ACC/

ACCESSORY or ON/RUN. 3. Move the shift lever to the

desired position.

If you still are unable to shift out of P (Park): 1. Ease the pressure on the shift

lever.

2. While holding down the brake

pedal, push the shift lever all the way into P (Park).

3. Move the shift lever to the

desired position.

If you are still having a problem shifting, have the vehicle serviced.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (24,1)

9-24

Driving and Operating

Engine Exhaust { WARNING

Engine exhaust contains carbon monoxide (CO) which cannot be seen or smelled. Exposure to CO can cause unconsciousness and even death. Exhaust may enter the vehicle if:

. The vehicle idles in areas

with poor ventilation (parking garages, tunnels, deep snow that may block underbody airflow or tail pipes).

. The exhaust smells or

sounds strange or different.

(Continued)

WARNING (Continued)

WARNING (Continued)

. The exhaust system leaks

due to corrosion or damage. . The vehicle exhaust system has been modified, damaged or improperly repaired.

. There are holes or openings

in the vehicle body from damage or aftermarket modifications that are not completely sealed.

(Continued)

If unusual fumes are detected or if it is suspected that exhaust is coming into the vehicle:

. Drive it only with the windows

completely down.

. Have the vehicle repaired

immediately.

Never park the vehicle with the engine running in an enclosed area such as a garage or a building that has no fresh air ventilation.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (25,1)

Running the Vehicle While Parked It is better not to park with the engine running. But if you ever have to, here are some things to know.

{ WARNING

Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine exhaust may enter the vehicle. Engine exhaust contains carbon monoxide (CO) which cannot be seen or smelled. It can cause unconsciousness and even death. Never run the engine in an enclosed area that has no fresh air ventilation. For more information, see Engine Exhaust on page 9‑24.

{ WARNING

It can be dangerous to get out of the vehicle if the automatic transmission shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. Do not leave the vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, always set the parking brake and move the shift lever to P (Park).

Follow the proper steps to be sure the vehicle will not move. See Shifting Into Park on page 9‑21. If parking on a hill and pulling a trailer, see Driving Characteristics and Towing Tips on page 9‑46.

Driving and Operating

9-25

Automatic Transmission

Automatic Transmission (Six Speed) Vehicles with a six speed automatic transmission have a shift position indicator within the instrument panel cluster. There are several different positions for the shift lever.

See “Range Selection Mode” under Manual Mode on page 9‑31.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (26,1)

9-26

Driving and Operating

P (Park): This position locks the rear wheels. It is the best position to use when starting the engine because the vehicle cannot move easily. When parked on a hill, especially when the vehicle has a heavy load, you might notice an increase in the effort to shift out of P (Park). See “Torque Lock” under Shifting Into Park on page 9‑21 for more information.

{ WARNING

It is dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. Do not leave the vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground,

(Continued)

WARNING (Continued)

always set the parking brake and move the shift lever to P (Park). See Shifting Into Park on page 9‑21. If you are pulling a trailer, see Driving Characteristics and Towing Tips on page 9‑46.

R (Reverse): Use this gear to back up. Notice: Shifting to R (Reverse) while the vehicle is moving forward could damage the transmission. The repairs would not be covered by the vehicle warranty. Shift to R (Reverse) only after the vehicle is stopped. To rock the vehicle back and forth to get out of snow, ice, or sand without damaging the transmission, see If the Vehicle Is Stuck on page 9‑10. N (Neutral): In this position, the engine does not connect with the wheels. To restart when you are

already moving, use N (Neutral) only. Also, use N (Neutral) when the vehicle is being towed.

{ WARNING

Shifting into a drive gear while the engine is running at high speed is dangerous. Unless your foot is firmly on the brake pedal, the vehicle could move very rapidly. You could lose control and hit people or objects. Do not shift into a drive gear while the engine is running at high speed.

Notice: Shifting out of P (Park) or N (Neutral) with the engine running at high speed may damage the transmission. The repairs would not be covered by the vehicle warranty. Be sure the engine is not running at high speed when shifting the vehicle.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (27,1)

D (Drive): This position is for normal driving. It provides the best fuel economy. If you need more power for passing, and you are: . Going less than about 55 km/h (35 mph), push the accelerator pedal about halfway down.

. Going about 55 km/h (35 mph) or

more, push the accelerator all the way down. By doing this, the vehicle shifts down to the next gear and has more power.

D (Drive) can be used when towing a trailer, carrying a heavy load or driving on steep hills. You might want to shift the transmission to a lower gear selection if the transmission shifts too often. Downshifting the transmission in slippery road conditions could result in skidding. See “Skidding” under Loss of Control on page 9‑5.

Driving and Operating

9-27

The vehicle has a shift stabilization feature that adjusts the transmission shifting to the current driving conditions in order to reduce rapid upshifts and downshifts. This shift stabilization feature is designed to determine, before making an upshift, if the engine is able to maintain vehicle speed by analyzing things such as vehicle speed, throttle position, and vehicle load. If the shift stabilization feature determines that a current vehicle speed cannot be maintained, the transmission does not upshift and instead holds the current gear. In some cases, this could appear to be a delayed shift, however the transmission is operating normally. The transmission uses adaptive shift controls. Adaptive shift controls continually compares key shift parameters to pre-programmed ideal shifts stored in the transmissions computer. The transmission constantly makes adjustments to improve vehicle performance according to how the

vehicle is being used, such as with a heavy load or when temperature changes. During this adaptive shift control process, shifting might feel different as the transmission determines the best settings. The shift quality of a new vehicle may not be ideal because the Adaptive Shift Control process may not have determined the best settings for a particular shift or condition. Shift quality will improve with continued driving. When temperatures are very cold, the transmission's gear shifting could be delayed providing more stable shifts until the engine warms up. Shifts could be more noticeable with a cold transmission. This difference in shifting is normal. M (Manual Mode): This position lets drivers select the range of gears appropriate for current driving conditions. If the vehicle has this feature, see “Range Selection Mode” under Manual Mode on page 9‑31.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (28,1)

9-28

Driving and Operating

3 (Third): This position is also used for normal driving. It reduces vehicle speed more than D (Drive) without using the brakes. You might choose 3 (Third) instead of D (Drive) when driving on hilly, winding roads, when towing a trailer, so there is less shifting between gears and when going down a steep hill. See “Range Selection Mode” under Manual Mode on page 9‑31. 2 (Second): This position reduces vehicle speed even more than 3 (Third) without using the brakes. You can use 2 (Second) on hills. It can help control vehicle speed as you go down steep mountain roads, but then you would also want to use the brakes off and on. See “Range Selection Mode” under Manual Mode on page 9‑31.

If you manually select 2 (Second) in an automatic transmission, the transmission will start in second gear. You can use this feature for reducing the speed of the rear wheels when you are trying to start the vehicle from a stop on slippery road surfaces. 1 (First): This position reduces vehicle speed without using the brakes. You can use it for major/ severe downgrades where the vehicle would otherwise accelerate due to steepness of grade. When you shift to 1 (First) it provides the lowest gear appropriate to current road speed and continues to downshift as the vehicle slows, eventually downshifting to 1 (First) gear. The transmission can be held in 1 (First) gear using Range Selection Mode or the shift lever. See “Range Selection Mode” under Manual Mode on page 9‑31.

Notice: Spinning the tires or holding the vehicle in one place on a hill using only the accelerator pedal may damage the transmission. The repair will not be covered by the vehicle warranty. If you are stuck, do not spin the tires. When stopping on a hill, use the brakes to hold the vehicle in place.

Automatic Transmission (Four Speed)

There are several different positions for your shift lever. P (Park): This position locks the rear wheels. It is the best position to use when you start the engine because the vehicle cannot move easily.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (29,1)

Driving and Operating

9-29

{ WARNING

It is dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. Do not leave the vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on fairly level ground, always set the parking brake and move the shift lever to P (Park). See Shifting Into Park on page 9‑21. If you are pulling a trailer, see Driving Characteristics and Towing Tips on page 9‑46.

Make sure the shift lever is fully in P (Park) before starting the engine. The vehicle has an automatic transmission shift lock control system. You must first press the

brake pedal before you can shift from P (Park) with the ignition in ON/RUN. If you cannot shift out of P (Park), ease pressure on the shift lever and push the shift lever all the way into P (Park) as you maintain brake application. Then move the shift lever into another gear. See Shifting out of Park on page 9‑22. R (Reverse): Use this gear to back up. Notice: Shifting to R (Reverse) while the vehicle is moving forward could damage the transmission. The repairs would not be covered by the vehicle warranty. Shift to R (Reverse) only after the vehicle is stopped. To rock the vehicle back and forth to get out of snow, ice or sand without damaging the transmission, see If the Vehicle Is Stuck on page 9‑10. N (Neutral): In this position, the engine does not connect with the wheels. To restart the engine when

the vehicle is already moving, use N (Neutral) only. Also, use N (Neutral) when the vehicle is being towed.

{ WARNING

Shifting into a drive gear while the engine is running at high speed is dangerous. Unless your foot is firmly on the brake pedal, the vehicle could move very rapidly. You could lose control and hit people or objects. Do not shift into a drive gear while the engine is running at high speed.

Notice: Shifting out of P (Park) or N (Neutral) with the engine running at high speed may damage the transmission. The repairs would not be covered by the vehicle warranty. Be sure the engine is not running at high speed when shifting the vehicle.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (30,1)

9-30

Driving and Operating

You should use 3 (Third) (or a lower gear as needed) when towing a trailer to minimize heat build-up and extend the life of the transmission. 2 (Second): This position reduces vehicle speed even more than 3 (Third) without using the brakes. You can use 2 (Second) on hills. It can help control vehicle speed as you go down steep mountain roads, but then you would also want to use the brakes off and on. You may use this feature for reducing torque to the rear wheels when you are trying to start the vehicle from a stop on slippery road surfaces.

1 (First): This position reduces vehicle speed even more than 2 (Second) without using the brakes. You can use it on very steep hills, or in deep snow or mud. If the shift lever is put in 1 (First) while the vehicle is moving forward, the transmission will not shift into first gear until the vehicle is going slowly enough. Notice: Spinning the tires or holding the vehicle in one place on a hill using only the accelerator pedal may damage the transmission. The repair will not be covered by the vehicle warranty. If you are stuck, do not spin the tires. When stopping on a hill, use the brakes to hold the vehicle in place.

D (Drive): This position is for normal driving. It provides the best fuel economy. If you need more power for passing, and you are: . Going less than about 55 km/h (35 mph), push the accelerator pedal about halfway down.

. Going about 55 km/h (35 mph) or

more, push the accelerator all the way down. You will shift down to the next gear and have more power.

Downshifting the transmission in slippery road conditions could result in skidding. See “Skidding” under Loss of Control on page 9‑5. 3 (Third): This position is also used for normal driving. However it reduces vehicle speed more than D (Drive) without using the brakes. You might choose 3 (Third) instead of D (Drive) when driving on hilly, winding roads, when towing a trailer, so there is less shifting between gears and when going down a steep hill.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (31,1)

Driving and Operating

9-31

When M (Manual Mode) is selected a number displays in the DIC next to the M indicating the current gear. This number is the highest gear that can be used. However, the vehicle can automatically shift to lower gears as it adjusts to driving conditions. This means that all gears below that number are available. When 5 (Fifth) is selected, 1 (First) through 5 (Fifth) gears are automatically shifted by the vehicle, but 6 (Sixth) cannot be used until the +/− button located on the steering column lever is used to change to the gear. Grade Braking is not available when Range Selection Mode is active. See Tow/Haul Mode on page 9‑32. While using Range Selection Mode, Cruise Control and the Tow/Haul Mode can be used.

Notice: Spinning the tires or holding the vehicle in one place on a hill using only the accelerator pedal may damage the transmission. The repair will not be covered by the vehicle warranty. If you are stuck, do not spin the tires. When stopping on a hill, use the brakes to hold the vehicle in place. Low Traction Mode Low Traction Mode can assist in vehicle acceleration when road conditions are slippery. While the vehicle is at a stop, select the second gear range using Range Selection Mode. This will limit torque to the wheels after it detects wheel slip, preventing the tires from spinning.

Manual Mode

Range Selection Mode

The vehicle may have a Range Selection Mode. The Range Selection Mode helps control the vehicle's transmission and vehicle speed while driving down hill or towing a trailer by letting you select a desired range of gears. To use this feature, do the following: 1. Move the shift lever to

M (Manual Mode).

2. Press the +/− buttons, located

on the steering column shift lever, to select the desired range of gears for current driving conditions.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (32,1)

9-32

Driving and Operating

Tow/Haul Mode

Vehicles with an automatic transmission have a Tow/Haul Mode. The Tow/Haul Mode adjusts the transmission shift pattern to reduce shift cycling, providing increased performance, vehicle control, and transmission cooling when towing or hauling heavy loads.

Turn the Tow/Haul Mode on and off by pressing the button, located to the right of the steering wheel on the instrument panel. When Tow/ Haul is on, a light on the instrument panel cluster will come on. See Tow/Haul Mode Light on page 5‑24 for more information. Also see “Tow/Haul Mode” under Towing Equipment on page 9‑55 for more information. Grade Braking (Six Speed Automatic Transmission) The Grade Braking shift modes can be activated by pressing the Tow/ Haul button on the instrument panel. While in Range Selection Mode, Grade Braking is deactivated allowing the driver to select a desired range of gears.

Grade Braking is only active while the Tow/Haul Mode is selected and you are not in the Range Selection Mode. See “Tow/Haul Mode” listed previously and Manual Mode on page 9‑31 for more information on the Range Selection Mode. Grade Braking assists in maintaining desired vehicle speeds when driving on downhill grades by automatically shifting to lower gears when the driver desires to slow the vehicle by applying the brake. This reduces wear on the braking system and increases control of the vehicle. Also see Trailer Towing on page 9‑50 for more information.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (33,1)

Drive Systems

Brakes

All-Wheel Drive If the vehicle has this feature, engine power is sent to all four wheels when extra traction is needed. This is like four-wheel drive, but there is no separate lever or switch to engage or disengage the front axle. It is fully automatic, and adjusts itself as needed for road conditions.

Antilock Brake System (ABS) This vehicle has the Antilock Brake System (ABS), an advanced electronic braking system that helps prevent a braking skid. When the engine is started and the vehicle begins to drive away, ABS checks itself. A momentary motor or clicking noise might be heard while this test is going on, and it might even be noticed that the brake pedal moves a little. This is normal.

Driving and Operating

9-33

If driving safely on a wet road and it becomes necessary to slam on the brakes and continue braking to avoid a sudden obstacle, a computer senses that the wheels are slowing down. If one of the wheels is about to stop rolling, the computer will separately work the brakes at each wheel. ABS can change the brake pressure to each wheel, as required, faster than any driver could. This can help the driver steer around the obstacle while braking hard. As the brakes are applied, the computer keeps receiving updates on wheel speed and controls braking pressure accordingly.

If there is a problem with ABS, this warning light stays on. See Antilock Brake System (ABS) Warning Light on page 5‑24.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (34,1)

9-34

Driving and Operating

Remember: ABS does not change the time needed to get a foot up to the brake pedal or always decrease stopping distance. If you get too close to the vehicle in front of you, there will not be enough time to apply the brakes if that vehicle suddenly slows or stops. Always leave enough room up ahead to stop, even with ABS. Using ABS Do not pump the brakes. Just hold the brake pedal down firmly and let ABS work. You might hear the ABS pump or motor operating and feel the brake pedal pulsate, but this is normal. Braking in Emergencies ABS allows the driver to steer and brake at the same time. In many emergencies, steering can help more than even the very best braking.

Parking Brake

To set the parking brake, hold the regular brake pedal, then push down the parking brake pedal. If the ignition is on, the brake system warning light will come on.

To release the parking brake, hold the regular brake pedal down. Pull the handle, located just above the parking brake pedal, with the parking brake symbol, to release the parking brake. If the ignition is on when the parking brake is released, the brake system warning light will go off. Notice: Driving with the parking brake on can overheat the brake system and cause premature wear or damage to brake system parts. Verify that the parking brake is fully released and the brake warning light is off before driving. If you are towing a trailer and are parking on a hill, see Driving Characteristics and Towing Tips on page 9‑46.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (35,1)

Ride Control Systems

StabiliTrak® System The vehicle may have a vehicle stability enhancement system called StabiliTrak. It is an advanced computer controlled system that assists the driver with directional control of the vehicle in difficult driving conditions. StabiliTrak activates when the computer senses a discrepancy between the intended path and the direction the vehicle is actually traveling. StabiliTrak selectively applies braking pressure at any one of the vehicle's brakes to assist the driver with keeping the vehicle on the intended path. When the vehicle is started and begins to move, the system performs several diagnostic checks to insure there are no problems.

Driving and Operating

9-35

For more information, see Traction Control System (TCS)/StabiliTrak® Light on page 5‑25. For your safety, the system can only be disabled when the vehicle speed is less than 32 km/h (20 mph).

The system may be heard or felt while it is working. This is normal and does not mean there is a problem with the vehicle. The system should initialize before the vehicle reaches 32 km/h (20 mph). In some cases, it may take approximately 3.2 km (2 mi) of driving before the system initializes.

The Traction Control System (TCS)/ StabiliTrak indicator light comes on the instrument panel cluster when the system requires service. When StabiliTrak activates, the TCS/StabiliTrak indicator light flashes on the instrument panel. This also occurs when TCS is activated.

Press the StabiliTrak button located on the instrument panel once to turn off the Traction Control System (TCS). The appropriate message is displayed in the DIC.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (36,1)

9-36

Driving and Operating

Press and hold the StabiliTrak button for more than five seconds to turn off StabiliTrak and TCS. The StabiliTrak Off light illuminates and the appropriate messages will be displayed in the DIC. To turn on the StabiliTrak system back on, press the StabiliTrak button again. StabiliTrak will automatically turn back on when the vehicle speed exceeds 32 km/h (20 mph). When the StabiliTrak system has been turned off, system noises may still be heard as a result of the brake-traction control coming on.

It is recommended to leave the system on for normal driving conditions, but it may be necessary to turn the system off if the vehicle is stuck in sand, mud, ice or snow, and you want to “rock” the vehicle to attempt to free it. See If the Vehicle Is Stuck on page 9‑10. StabiliTrak System Operation The StabiliTrak system is normally on, except when the system is initializing or has been disabled with the StabiliTrak button. The StabiliTrak system will automatically activate to assist the driver in maintaining vehicle directional control in most driving conditions. When activated, the StabiliTrak system may reduce engine power to the wheels and apply braking to individual wheels as necessary to assist the driver with vehicle directional control. If cruise control is being used when StabiliTrak activates, the cruise control automatically disengages. The

cruise control can be re-engaged when road conditions allow. See Cruise Control on page 9‑37. The StabiliTrak system may also turn off automatically if it determines that a problem exists with the system. If the problem does not clear itself after restarting the vehicle, see your dealer for service. Traction Control Operation TCS is part of the StabiliTrak system. TCS limits wheel spin by reducing engine power to the wheels and by applying brakes to each individual wheel as necessary . If the brake-traction control system activates constantly or if the brakes have heated up due to high speed braking, the brake-traction control will be automatically disabled. The system will come back on after the brakes have cooled. This can take up to two minutes or longer depending on brake usage.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (37,1)

Driving and Operating

9-37

TCS may activate on dry or rough roads or under conditions such as heavy acceleration while turning or abrupt upshifts/downshifts of the transmission. When this a reduction in acceleration may be noticed, or a noise or vibration may be heard. This is normal. Adding non‐dealer accessories can affect the vehicle's performance. See Accessories and Modifications on page 10‑3 for more information.

Locking Rear Axle Vehicles with a locking rear axle can give more traction on snow, mud, ice, sand, or gravel. It works like a standard axle most of the time, but when traction is low, this feature will allow the rear wheel with the most traction to move the vehicle.

Cruise Control

{ WARNING

Cruise control can be dangerous where you cannot drive safely at a steady speed. So, do not use the 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.

For vehicles with cruise control, a speed of about 40 km/h (25 mph) or more can be maintained without keeping your foot on the accelerator. Cruise control does not work at speeds below about 40 km/h (25 mph). When the brakes are applied, cruise control is turned off.

If the vehicle has StabiliTrak and the system begins to limit wheel spin, cruise control will automatically disengage. See StabiliTrak® System on page 9‑35. When road conditions allow the cruise control to be safely used again, it can be turned back on.

I (On/Off): Press to turn the system on or off. The indicator light is on when cruise control is on and turns off when cruise control is off.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (38,1)

9-38

Driving and Operating

+RES (Resume/Accelerate): Press briefly to make the vehicle resume to a previously set speed, or press and hold to accelerate. SET− (Set/Coast): Press to set the speed and activate cruise control or press and hold to decelerate. [ (Cancel): Press to disengage cruise control without erasing the set speed from memory.

Setting Cruise Control If the cruise button is on when not in use, it could get bumped and go into cruise when not desired. Keep the cruise control switch off when cruise is not being used. The cruise control light on the instrument panel cluster comes on after the cruise control has been set to the desired speed. 1. Press the I button. 2. Get up to the desired speed.

3. Press the SET− button located

on the steering wheel and release it.

4. Take your foot off the

accelerator.

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

Increasing Speed While Using Cruise Control If the cruise control system is already activated, . Press and hold the +RES button

on the steering wheel until the desired speed is reached, then release it. To increase vehicle speed in small amounts, press the +RES button. Each time this is done, the vehicle goes about 1.6 km/h (1 mph) faster.

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

on the steering wheel until the desired lower speed is reached, then release it.

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (39,1)

To slow down in small amounts, press the SET– button on the steering wheel briefly. Each time this is done, the vehicle goes about 1.6 km/h (1 mph) slower.

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 previous set cruise speed.

Using Cruise Control on Hills How well the cruise control works on hills depends on the vehicle speed, the load, and the steepness of the hills. When going up steep hills, pressing the accelerator pedal may be necessary to maintain vehicle speed.

Driving and Operating

9-39

While going downhill: . Vehicles with a four speed

automatic transmission may need to have the brakes applied or the transmission shifted to a lower gear to keep the speed down.

. Vehicles with a six speed

automatic transmission have a Cruise Grade Braking feature that may automatically shift to a lower gear to keep the speed down. It may be necessary to apply the brake or manually shift the transmission to a lower gear. The vehicle may shift to a higher gear when grade braking assistance is no longer required. Cruise Grade Braking is not available while in Range Selection Mode. This feature is active when the exhaust brake is enabled (if equipped). See "Range Selection Mode" under Manual Mode on page 9‑31.

When the brakes are manually applied the cruise control is disengaged.

Ending Cruise Control There are three ways to end cruise control:

To disengage cruise control, step lightly on the brake pedal.

. Press the [ on the steering

wheel. To turn off the cruise control, press I on the steering wheel.

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

GMC Savana Owner Manual - 2012 - 2nd - 11/11/11

Black plate (40,1)

9-40

Driving and Operating

Recommended Fuel Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving.