2013 GMC Savana Owners Manual

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 9‑34. 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. 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 reduction in acceleration occurs, it 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.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (34,1)

9-34

Driving and Operating

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 9‑32. 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 - 2013 - 2nd Edition - 9/25/12

Black plate (35,1)

+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 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 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.

Driving and Operating

9-35

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. 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.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (36,1)

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

9-36

Driving and Operating

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. 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 help maintain driver selected speed.

. Vehicles with a six speed

automatic transmission have Cruise Grade Braking to help maintain driver selected speed.

Cruise Grade Braking is enabled when the vehicle is started and Cruise Control is active. It is not enabled in Range Selection Mode. It assists in maintaining driver selected speed when driving on

downhill grades by using the engine and transmission to slow the vehicle. To disable and enable Cruise Grade Braking for the current ignition key cycle, press and hold the Tow/Haul button for three seconds. A DIC message displays. See Transmission Messages on page 5‑37. 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.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (37,1)

Driving and Operating

9-37

How the System Works URPA comes on automatically when the shift lever is moved into R (Reverse). A single tone sounds to indicate the system is working. URPA operates only at speeds less than 8 km/h (5 mph). An obstacle is indicated by audible beeps. The time between the beeps gets shorter as the vehicle approaches the obstacle. A continuous tone is heard when the distance is less than 30 cm (12 in). To be detected, objects must be at least 25 cm (10 in) off the ground and below rear door level. Objects must also be within 2.5 m (8 ft) from the rear bumper. This distance may be less during warmer or humid weather.

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 5‑24. URPA defaults to the on setting each time the vehicle is started. 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 for repair. PARK ASSIST OFF: This message occurs if the driver disables the system or if the vehicle is driven above 8 km/h (5 mph) in R (Reverse).

If this

Object Detection Systems

Ultrasonic Parking Assist If available, the Ultrasonic Rear Parking Assist (URPA) system uses sensors on the rear bumper to assist with parking and avoiding objects while in R (Reverse). { WARNING

The URPA 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 URPA, always check the area around the vehicle and check all mirrors before backing.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (38,1)

9-38

Driving and Operating

PARK ASST BLOCKED SEE OWNERS MANUAL: This message can occur under the following conditions:

The ultrasonic sensors are not clean. Keep the rear bumper free of mud, dirt, snow, ice, slush, and frost. The message may not clear until frost or ice has melted all around and inside the sensor.

. A trailer is attached to the

vehicle, or a bicycle or an object hanging out of the rear door during the current or last drive cycle. URPA will return to normal operation after it is determined the object is removed. This could take a few drive cycles.

. A tow bar is attached to the

vehicle.

Other conditions may affect system performance, such as vibrations from a jackhammer or the compression of air brakes on a very large truck.

Rear Vision Camera (RVC) If available, the Rear Vision Camera (RVC) system displays part of the scene behind the vehicle. { WARNING

The RVC system does not display children, pedestrians, bicyclists, animals, or any other object located outside the camera's field of view, below the bumper, or under the vehicle. Perceived distances may be different from actual distances. Do not back the vehicle using only the RVC screen, during longer, higher speed backing maneuvers, or where there could be cross traffic. Failure to use proper care before backing may result in injury, death, or vehicle damage. Always check behind and around the vehicle before backing.

Vehicles without Navigation System The RVC system displays a view of the area behind the vehicle. When the vehicle is on and shifted into R (Reverse) the video image appears on the inside rearview mirror. The video image disappears after the vehicle is shifted out of R (Reverse). Vehicles with Navigation System The RVC system is designed to help the driver when backing up by displaying a view of the area behind the vehicle. When the vehicle is shifted into R (Reverse), the video image appears on the navigation screen. After a delay, the navigation screen displays the last screen after the vehicle is shifted out of R (Reverse).

Turning the RVC System On or Off To turn the RVC system on or off: 1. Shift into P (Park).

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (39,1)

Driving and Operating

9-39

2. Press MENU to enter the

configure menu options. Turn the Multifunction knob until the Display feature is highlighted and press the Multifunction knob. Or press the Display screen button

3. Select the Rear Camera Options screen button. The Rear Camera Options screen displays.

4. Select the Video screen button.

When the Video screen button is highlighted the RVC system is on.

The delay that is received after shifting out of R (Reverse) is approximately 10 seconds. The delay can be canceled by performing one of the following: . Pressing a hard key on the

navigation system.

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

8 km/h (5 mph).

Symbols The navigation system may have a feature that allows for viewing parking assist symbols on the navigation screen while using the RVC. The Ultrasonic Rear Park Assist (URPA) system must not be disabled to use the caution symbols. If URPA has been disabled and the symbols have been turned on, the Rear Parking Assist Symbols Unavailable error message may display. See Ultrasonic Parking Assist on page 9‑37. The symbols appear near objects detected by the URPA system. The symbol may cover the object when viewing the navigation screen. To turn the symbols on or off: 1. Make sure that URPA has not

been disabled.

2. Shift into P (Park). 3. Press MENU to enter the

configure menu options. Turn the Multifunction knob until the Display feature is highlighted

and press the Multifunction knob. Or press the Display screen button

4. Select the Rear Camera Options screen button. The Rear Camera Options screen displays.

5. Touch the Symbols screen

button. The screen button will be highlighted when on.

Guidelines 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 guidelines on or off: 1. Make sure that URPA has not

been disabled.

2. Shift into P (Park). 3. Press MENU to enter the

configure menu options. Turn the Multifunction knob until the Display feature is highlighted and press the Multifunction knob. Or press the Display screen button

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (40,1)

9-40

Driving and Operating

4. Select the Rear Camera Options screen button. The Rear Camera Options screen displays.

5. Touch the Guidelines screen

button. The screen button will be highlighted when on.

RVC Location

1. View displayed by the camera

The camera is above the license plate. This shows the field of view that the camera provides.

1. View displayed by the camera 2. Corners of the rear bumper

Displayed images may be further or closer than they appear. The area displayed is limited and objects which are close to either corner of the bumper or under the bumper do not display. When the System Does Not Seem To Work Properly The RVC system might not work properly or display a clear image if:

The RVC is turned off. See “Turning the RVC System On or Off” earlier in this section. 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

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (41,1)

return to normal the device will reset and the green indicator will stop flashing.

During any of these fault conditions, the display will be blank and the indicator will flash while the vehicle is in R (Reverse) or until the conditions return to normal.

can change or the camera can be affected. Be sure to have the camera and its position and mounting angle checked at your dealer.

The RVC system display in the rearview mirror may turn off or not appear as expected due to one of the following conditions. If this occurs the left indicator light on the mirror will flash. . A slow flash may indicate a loss

of video signal, or no video signal present during the reverse cycle.

. A fast flash may indicate that the

display has been on for the maximum allowable time during a reverse cycle, or the display has reached an Over Temperature limit. The fast flash conditions are used to protect the video device from high temperature conditions. Once conditions

Driving and Operating

9-41

Fuel For diesel engine vehicles, see “Fuel for Diesel Engines” in the Duramax diesel supplement. For Vehicles with gasoline engines, please read this.

Gasoline Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of gasoline advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com. TOP TIER gasoline is only available in the U.S. and Canada.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (42,1)

9-42

Driving and Operating

If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service. Gasolines containing oxygenates, such as ethers and ethanol, as well as reformulated gasolines are available in some cities. If these gasolines comply with the previousely 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 flex fuel vehicles.

{ 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 that are not reformulated for low emissions can contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). Do not use gasolines 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.

Gasoline Specifications At a minimum, gasoline should meet ASTM specification D 4814. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives on page 9‑43.

Vehicles that have a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See Fuel E85 (85% Ethanol) on page 9‑44. For all other vehicles, use only the unleaded gasoline described under Recommended Fuel on page 9‑42.

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.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (43,1)

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 might fail a smog‐check test. See Malfunction Indicator Lamp on page 5‑17. 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 might not be covered by the vehicle warranty.

Driving and Operating

9-43

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, 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 provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control system to work properly. In most cases, nothing should have to be added to the fuel. However, some gasolines contain only the minimum amount of additive required to meet U.S.

Environmental Protection Agency regulations. To help keep fuel injectors and intake valves clean and avoid problems due to dirty injectors or valves, look for gasoline that is advertised as TOP TIER Detergent Gasoline. Look for the TOP TIER label on the fuel pump to ensure gasoline meets enhanced detergency standards developed by the auto companies. A list of marketers providing TOP TIER Detergent Gasoline can be found at www.toptiergas.com. For customers who do not use TOP TIER Detergent Gasoline regularly, one bottle of GM Fuel System Treatment PLUS, added to the fuel tank at every engine oil change, can help clean deposits from fuel injectors and intake valves. GM Fuel System Treatment PLUS is the only gasoline additive recommended by General Motors. It is available at your dealer. Gasolines containing oxygenates, such as ethers and ethanol, and reformulated gasolines might be

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (44,1)

9-44

Driving and Operating

available in your area. We recommend that you use these gasolines, if they comply with the specifications described earlier. However, E85 (85% ethanol) and other fuels containing more than 15% ethanol must not be used in vehicles that were not designed for those fuels. Notice: This vehicle was not designed for fuel that contains methanol. 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 that are not reformulated for low emissions can contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); ask the attendant where you buy gasoline whether the fuel contains MMT. We recommend against the use of such gasolines. Fuels containing MMT can reduce

spark plug life and affect emission control system performance. The malfunction indicator lamp might turn on. If this occurs, return to your dealer for service.

Fuel E85 (85% Ethanol) Vehicles that have a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). For all other vehicles, use only the unleaded gasoline described under Recommended Fuel on page 9‑42. We encourage the use of E85 in vehicles that are designed to use it. The ethanol in E85 is a “renewable” fuel, meaning it is made from renewable sources such as corn and other crops. Many service stations will not have an 85% ethanol fuel (E85) pump available. The U.S. Department of Energy has an alternative fuels website (www.afdc.energy.gov/afdc/ locator/stations/) that can help you find E85 fuel. Those stations that do

have E85 should have a label indicating ethanol content. Do not use the fuel if the ethanol content is greater than 85%. At a minimum, E85 should meet ASTM Specification D 5798 or CGSB Specification 3.512. Filling the tank with fuel mixtures that do not meet ASTM or CGSB specifications can affect driveability and could cause the malfunction indicator lamp to come on. As the outside temperature approaches freezing, ethanol fuel distributors should supply winter grade ethanol, the same as with unleaded gasoline. It is best not to alternate repeatedly between gasoline and E85. If you do switch fuels, it is recommended that you add as much fuel as possible — do not add less than 11 L (3 gal) when refueling. You should drive the vehicle immediately after refueling for at least 11 km (7 mi) to allow the vehicle to adapt to the change in ethanol concentration.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (45,1)

E85 has less energy per liter (gallon) than gasoline, so you will need to refill the fuel tank more often when using E85 than when you are using gasoline. See Filling the Tank on page 9‑45. Notice: Some additives are not compatible with E85 fuel and can harm the vehicle's fuel system. Do not add anything to E85. Damage caused by additives would not be covered by the vehicle warranty. Notice: This vehicle was not designed for fuel that contains methanol. 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.

Driving and Operating

9-45

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.

. Keep children away from the

fuel pump and never let children pump fuel.

(Continued)

WARNING (Continued)

. 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

The tethered fuel cap is located behind a hinged fuel door on the driver side of the vehicle. If the vehicle has E85 fuel capability, the fuel cap will be yellow and state that E85 or gasoline can be used. See Fuel E85 (85% Ethanol) on page 9‑44. To remove the fuel cap, turn it slowly counterclockwise. While refueling, hang the tethered fuel cap from the hook on the fuel door.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (46,1)

9-46

Driving and Operating

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 10‑83. When replacing the fuel cap, turn it clockwise until it clicks. Make sure the cap is fully installed. The diagnostic system can determine if the fuel cap has been left off or improperly installed. This would allow fuel to evaporate into the atmosphere. See Malfunction Indicator Lamp on page 5‑17.

{ 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.

Notice: If you need a new fuel cap, be sure to get the right type. Your dealer can get one for you. If you get the wrong type, it may not fit properly. This may cause the malfunction indicator lamp to light and may damage the fuel tank and emissions system. See Malfunction Indicator Lamp on page 5‑17.

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.

(Continued)

WARNING (Continued)

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

. Place the container on the

ground.

. 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.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (47,1)

Driving and Operating

9-47

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 10‑80. For towing the vehicle behind another vehicle such as a motor home, see Recreational Vehicle Towing on page 10‑80.

Driving Characteristics and Towing Tips

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

and local laws that apply 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) of trailer towing, do not drive over 80 km/h (50 mph) and do not make starts at full throttle.

. Vehicles can tow in D (Drive).

Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/ or hilly conditions.

{ 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.

(Continued)

WARNING (Continued)

. 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 System” in the Index.

For more information about Carbon Monoxide, see Engine Exhaust on page 9‑21.

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

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (48,1)

9-48

Driving and Operating

combination moving and then apply the trailer brake controller by hand to be sure the brakes work. During the trip, check occasionally to be sure that the load is secure and the lamps and any trailer brakes still work. Following Distance Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer. This can help to avoid heavy braking and sudden turns. Passing More passing distance is needed when towing a trailer. The combination will not accelerate as quickly and is longer so it is necessary to go much farther beyond the passed vehicle before returning to the lane. Backing Up Hold the bottom of the steering wheel with one hand. To move the trailer to the left, move that hand to

the left. To move the trailer to the right, move your hand to the right. Always back up slowly and, if possible, have someone guide you. Making Turns Notice: 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. Do this so the trailer will not strike soft shoulders, curbs, road signs, trees, or other objects. Avoid jerky or sudden maneuvers. Signal well in advance. If the trailer turn signal bulbs burn out, the arrows on the instrument cluster will still flash for turns. It is important to check occasionally to be sure the trailer bulbs are still working.

Driving on Grades Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might get hot and no longer work well. Vehicles can tow in D (Drive). Shift the transmission to a lower gear if the transmission shifts too often under heavy loads and/or hilly conditions. The Tow/Haul Mode may be used if the transmission shifts too often. See Tow/Haul Mode on page 9‑29. When towing at high altitude on steep uphill grades, consider the following: Engine coolant will boil at a lower temperature than at normal altitudes. If the engine is turned off immediately after towing at high altitude on steep uphill grades, the vehicle may show signs similar to engine overheating. To avoid this, let the engine run while parked, preferably on level ground, with the automatic transmission in P (Park)

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (49,1)

Driving and Operating

9-49

for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating on page 10‑20. Parking on Hills

{ WARNING

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

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

2. Have someone place chocks

under the trailer wheels.

3. When the wheel chocks are in

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

4. Reapply the brake pedal. Then

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

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

clear of the chocks.

7. Stop and have someone pick up

and store the chocks.

Maintenance when Trailer Towing The vehicle needs service more often when pulling a trailer. See Maintenance Schedule on page 11‑3. Things that are

especially important in trailer operation are automatic transmission fluid, engine oil, axle lubricant, belts, cooling system, and brake system. It is a good idea to inspect these before and during the trip. Check periodically to see that all hitch nuts and bolts are tight.

Trailer Towing If the vehicle has a diesel engine, see the Duramax diesel supplement.

{ WARNING

The driver can lose control when pulling a trailer if the correct equipment is not used or the vehicle is not driven properly. For example, if the trailer is too heavy, the brakes may not work well — or even at all. The driver and passengers could be

(Continued)

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (50,1)

9-50

Driving and Operating

WARNING (Continued)

seriously injured. The vehicle may also be damaged; the resulting repairs would not be covered by the vehicle warranty. Pull a trailer only if all the steps in this section have been followed. Ask your dealer for advice and information about towing a trailer with the vehicle.

Notice: Pulling a trailer improperly can damage the vehicle and result in costly repairs not covered by the vehicle warranty. To pull a trailer correctly, follow the advice in this section and see your dealer for important information about towing a trailer with the vehicle. To identify the trailering capacity of the vehicle, read the information in “Weight of the Trailer” that appears later in this section.

Trailering is different than just driving the vehicle by itself. Trailering means changes in handling, acceleration, braking, durability, and fuel economy. Successful, safe trailering takes correct equipment, and it has to be used properly. The following information has many time-tested, important trailering tips and safety rules. Many of these are important for your safety and that of your passengers. So please read this section carefully before pulling a trailer. Weight of the Trailer How heavy can a trailer safely be? It depends on how the rig is used. For example, speed, altitude, road grades, outside temperature, and how much the vehicle is used to pull a trailer are all important. It can depend on any special equipment on the vehicle, and the amount of tongue weight the vehicle can carry.

See “Weight of the Trailer Tongue” later in this section 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. Use the following chart to determine how much the vehicle can weigh, based upon the vehicle model and options.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (51,1)

Vehicle G1500 Cargo Van 2WD

4.3L V6
5.3L V8

H1500 Cargo Van AWD

5.3L V8

G1500 Passenger Van 2WD

5.3L V8

H1500 Passenger Van AWD

5.3L V8

G2500 Cargo Van 2WD Short Wheelbase

4.8L V8
6.0L V8

G2500 Cargo Van 2WD Long Wheelbase

4.8L V8
6.0L V8

Driving and Operating

9-51

Axle Ratio

Maximum Trailer Weight

GCWR*

3.42
3.42
3.73

3.42

3.42
3.73

3.42
3.73

3.42
3.42

3.42
3.42

1 950 kg (4,300 lbs) 3 039 kg (6,700 lbs)

4 309 kg (9,500 lbs) 5 443 kg (12,000 lbs)

2 948 kg (6,500 lbs)

5 443 kg (12,000 lbs)

2 812 kg (6,200 lbs)

5 443 kg (12,000 lbs)

2 722 kg (6,000 lbs)

5 443 kg (12,000 lbs)

3 357 kg (7,400 lbs) 4 536 kg (10,000 lbs)

5 897 kg (13,000 lbs) 7 257 kg (16,000 lbs)

3 266 kg (7,200 lbs) 4 536 kg (10,000 lbs)

5 897 kg (13,000 lbs) 7 257 kg (16,000 lbs)

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (52,1)

9-52

Driving and Operating

Vehicle G2500 Passenger Van 2WD Short Wheelbase

Axle Ratio

Maximum Trailer Weight

GCWR*

4.8L V8
6.0L V8

G3500 Cargo Van 2WD Short Wheelbase

4.8L V8
6.0L V8

G3500 Cargo Van 2WD Long Wheelbase

4.8L V8
6.0L V8

G3500 Passenger Van 2WD Short Wheelbase

6.0L V8

G3500 Passenger Van 2WD Long Wheelbase

3.42
3.42

3.42
3.42

3.42
3.42

3.42

3 039 kg (6,700 lbs) 4 445 kg (9,800 lbs)

5 897 kg (13,000 lbs) 7 257 kg (16,000 lbs)

3 357 kg (7,400 lbs) 4 536 kg (10,000 lbs)

5 897 kg (13,000 lbs) 7 257 kg (16,000 lbs)

3 221 kg (7,100 lbs) 4 536 kg (10,000 lbs)

5 897 kg (13,000 lbs) 7 257 kg (16,000 lbs)

4 400 kg (9,700 lbs)

7 257 kg (16,000 lbs)

6.0L V8

7 257 kg (16,000 lbs) *The Gross Combined Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo equipment and conversion. The GCWR for the vehicle should not be exceeded.

4 218 kg (9,300 lbs)

3.42

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (53,1)

Driving and Operating

9-53

Ask your dealer for our trailering information or advice, or write us at our Customer Assistance Offices. See Customer Assistance Offices on page 13‑3 for more information. Weight of the Trailer Tongue The tongue load (1) of any trailer is an important weight to measure because it affects the total gross weight of the vehicle. The Gross Vehicle Weight (GVW) includes the curb weight of the vehicle, any cargo carried in it, and the people who will be riding in the vehicle. If there are a lot of options, equipment, passengers, or cargo in the vehicle, it will reduce the tongue weight the vehicle can carry, which will also reduce the trailer weight the vehicle can tow. If towing a trailer, the tongue load must be added to the GVW because the vehicle will be carrying that weight, too. See Vehicle Load Limits on page 9‑10
for more information about the vehicle's maximum load capacity.

The trailer tongue weight (1) should be 10 percent to 15 percent of the total loaded trailer weight (2), up to a maximum of 181 kg (400 lbs) with a weight carrying hitch. The trailer tongue weight (1) should be 10 percent to 15 percent of the total loaded trailer weight (2), up to a maximum of 454 kg (1,000 lbs) with a weight distributing hitch. Do not exceed the maximum allowable tongue weight for the vehicle. Choose the shortest hitch extension that will position the hitch

ball closest to the vehicle. This will help reduce the effect of trailer tongue weight on the rear axle. 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.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (54,1)

9-54

Driving and Operating

Total Weight on the Vehicle's Tires Be sure the vehicle tires are inflated to the upper limit for cold tires. These numbers can be found on the Certification label at the rear edge of the driver door, or see Vehicle Load Limits on page 9‑10. Make sure not to go over the GVW limit for the vehicle, or the GAWR, including the weight of the trailer tongue. If using a weight distributing hitch, make sure not to go over the rear axle limit before applying the weight distribution spring bars.

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.

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 the distance (1) remains the same both before and after coupling the trailer to the tow vehicle. If a step-bumper hitch will be used, the bumper could be damaged in sharp turns. Make sure there

is ample room when turning to avoid contact between the trailer and the bumper. If the loaded trailer being pulled will weigh more than 2 270 kg (5,000 lbs), be sure to use a properly mounted weight-distributing hitch and sway control of the proper size. This equipment is very important for proper vehicle loading and good handling when driving. Always use a sway control if the trailer will weigh more than these limits. Ask a hitch dealer about sway controls. Will any holes need to be made in the body of the vehicle when a trailer hitch is installed? If using the wiring provided with the factory-installed trailering package, no holes need to be made in the body of the vehicle. However, if an aftermarket hitch is installed, holes may need to be made in the body. If holes are made in the body, then be sure to seal the holes later when the hitch is removed. If the holes are

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (55,1)

not sealed, deadly carbon monoxide (CO) from the engine's exhaust can get into the vehicle as well as dirt and water. See “Carbon Monoxide” under Engine Exhaust on page 9‑21. 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 680 kg (1,500 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.

Trailer Wiring Harness The optional heavy-duty trailer wiring package includes a wiring harness, with a seven-pin connector at the rear of the vehicle and a four-wire harness assembly under the driver side of the instrument panel. The four-wire harness assembly comes without a connector. If the vehicle does not have a trailer hitch, the seven-wire harness assembly with connector is taped together and located in a frame pocket at the driver side rear left corner of the frame. If the vehicle has a trailer hitch, the seven-wire harness assembly with connector is attached to a bracket on the hitch platform. In both cases, the seven-wire harness has a connector and includes a 30-amp feed wire.

Driving and Operating

9-55

The seven-wire harness connector contains the following trailer circuits:

Light Green: Back-up Lamps (10A fuse)**

. White: Ground . Dark Blue: Trailer Brake Signal . Dark Green: Right Rear Stop

and Turn Signal*

. Red/Black Stripe: Battery Feed

(30A Fuse)

. Brown: Trailer Park Lamp

Supply Voltage (15A fuse)**

. Yellow: Left Rear Stop and Turn

Signal *

The four-wire harness (without connector) contains the following circuits: . Black: Ground . Red/White: Battery Feed . Dark Blue: Trailer Brake Signal

Light Blue: CHMSL/Stoplamp Supply Voltage

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (56,1)

9-56

Driving and Operating

* If the vehicle is a cutaway with trailer provisions, a 15 amp fuse will be shared for both left/stop trailer turn and right/stop trailer turn signals. However, the cutaway lighting connector will have a 10 amp fuse for each signal. ** If the vehicle is a cutaway with trailer provisions, a 15 amp fuse will be shared for trailer park lamps and cutaway rear lighting connector park lamps. Also, a 10 amp fuse will be shared for trailer back-up lamps and cutaway rear lighting connector back-up lamps. Tow/Haul Mode This button is on the instrument panel, to the right of the steering wheel. Pressing this button turns on and off the Tow/Haul Mode.

This indicator light on the instrument cluster comes on when the Tow/ Haul Mode is on. Tow/Haul is a feature that assists when pulling a heavy trailer or a large or heavy load. See Tow/Haul Mode on page 9‑29. Tow/Haul is designed to be most effective when the vehicle and trailer combined weight is at least 75 percent of the vehicle Gross Combined Weight Rating (GCWR). See “Weight of the Trailer” in Trailer Towing on page 9‑49. Tow/Haul is most useful under the following driving conditions: . When pulling a heavy trailer or a

large or heavy load through rolling terrain.

. When pulling a heavy trailer or a

large or heavy load in stop and go traffic.

. When pulling a heavy trailer or a

large or heavy load in busy parking lots where improved low speed control of the vehicle is desired.

Operating the vehicle in Tow/Haul when lightly loaded or with no trailer at all will not cause damage. However, there is no benefit to the selection of Tow/Haul when the vehicle is unloaded. Such a selection when unloaded may result in unpleasant engine and transmission driving characteristics and reduced fuel economy. Tow/ Haul is recommended only when pulling a heavy trailer or a large or heavy load.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (57,1)

Driving and Operating

9-57

Conversions and Add-Ons

Add-On Electrical Equipment Notice: 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 3‑30 and Adding Equipment to the Airbag-Equipped Vehicle on page 3‑31.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (58,1)

9-58

Driving and Operating

2 NOTES

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (1,1)

Vehicle Care

10-1

Vehicle Care

General Information

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

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

California Perchlorate

Materials Requirements . . . . 10-3

Accessories and

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

Vehicle Checks Doing Your Own

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

Overview . . . . . . . . . . . . . . . . . . . 10-5
Engine Oil . . . . . . . . . . . . . . . . . . . 10-6
Engine Oil Life System . . . . . . 10-8
Automatic Transmission Fluid

(4-Speed Transmission) . . . . 10-9

Automatic Transmission Fluid

(6-Speed Transmission) . . . 10-11
Engine Air Cleaner/Filter . . . . 10-14
Cooling System . . . . . . . . . . . . 10-15
Engine Coolant . . . . . . . . . . . . . 10-16
Engine Overheating . . . . . . . . 10-20
Engine Fan . . . . . . . . . . . . . . . . . 10-21

Power Steering Fluid . . . . . . . 10-22
Washer Fluid . . . . . . . . . . . . . . . 10-22
Brakes . . . . . . . . . . . . . . . . . . . . . 10-23
Brake Fluid . . . . . . . . . . . . . . . . . 10-24
Battery . . . . . . . . . . . . . . . . . . . . . 10-26
All-Wheel Drive . . . . . . . . . . . . . 10-26
Front Axle . . . . . . . . . . . . . . . . . . 10-27
Rear Axle . . . . . . . . . . . . . . . . . . 10-27
Noise Control System . . . . . . 10-28
Starter Switch Check . . . . . . . 10-29
Automatic Transmission Shift

Lock Control Function Check . . . . . . . . . . . . . . . . . . . . . 10-29

Ignition Transmission Lock

Check . . . . . . . . . . . . . . . . . . . . . 10-30

Park Brake and P (Park)

Mechanism Check . . . . . . . . 10-30

Wiper Blade

Replacement . . . . . . . . . . . . . . 10-30

Headlamp Aiming

Headlamp Aiming . . . . . . . . . . 10-31

Bulb Replacement

Bulb Replacement . . . . . . . . . . 10-31
Halogen Bulbs . . . . . . . . . . . . . . 10-31
Headlamps . . . . . . . . . . . . . . . . . 10-32

Front Turn Signal,

Sidemarker, and Parking Lamps . . . . . . . . . . . . . . . . . . . . 10-33
Taillamps . . . . . . . . . . . . . . . . . . . 10-34
Center High-Mounted

Stoplamp (CHMSL) . . . . . . . 10-35
License Plate Lamp . . . . . . . . 10-36
Replacement Bulbs . . . . . . . . . 10-36

Electrical System

Electrical System

Overload . . . . . . . . . . . . . . . . . . 10-37

Fuses and Circuit

Breakers . . . . . . . . . . . . . . . . . . 10-37

Engine Compartment Fuse

Block . . . . . . . . . . . . . . . . . . . . . 10-37

Floor Console Fuse

Block . . . . . . . . . . . . . . . . . . . . . 10-41

Wheels and Tires

Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-43
All-Season Tires . . . . . . . . . . . . 10-44
Winter Tires . . . . . . . . . . . . . . . . 10-44
Summer Tires . . . . . . . . . . . . . . 10-45
Tire Sidewall Labeling . . . . . . 10-45
Tire Designations . . . . . . . . . . . 10-48
Tire Terminology and

Definitions . . . . . . . . . . . . . . . . 10-49
Tire Pressure . . . . . . . . . . . . . . . 10-52

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (2,1)

10-2

Vehicle Care

Tire Pressure Monitor

System . . . . . . . . . . . . . . . . . . . 10-53

Tire Pressure Monitor

Operation . . . . . . . . . . . . . . . . . 10-54
Tire Inspection . . . . . . . . . . . . . . 10-57
Tire Rotation . . . . . . . . . . . . . . . 10-58
Dual Tire Rotation . . . . . . . . . . 10-59
When It Is Time for New

Tires . . . . . . . . . . . . . . . . . . . . . . 10-59
Buying New Tires . . . . . . . . . . . 10-60
Different Size Tires and

Wheels . . . . . . . . . . . . . . . . . . . 10-62

Uniform Tire Quality

Grading . . . . . . . . . . . . . . . . . . . 10-62

Wheel Alignment and Tire

Balance . . . . . . . . . . . . . . . . . . . 10-64
Wheel Replacement . . . . . . . . 10-64
Tire Chains . . . . . . . . . . . . . . . . . 10-65
If a Tire Goes Flat . . . . . . . . . . 10-65
Tire Changing . . . . . . . . . . . . . . 10-67
Secondary Latch System . . . 10-74
Full-Size Spare Tire . . . . . . . . 10-76

Jump Starting

Jump Starting . . . . . . . . . . . . . . 10-77

Towing

Towing the Vehicle . . . . . . . . . 10-80
Recreational Vehicle

Towing . . . . . . . . . . . . . . . . . . . . 10-80

Appearance Care

Exterior Care . . . . . . . . . . . . . . . 10-83
Interior Care . . . . . . . . . . . . . . . . 10-86
Floor Mats . . . . . . . . . . . . . . . . . . 10-89

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:

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

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (3,1)

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

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

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

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

Vehicle Care

10-3

Vehicle Checks

Doing Your Own Service Work

{ WARNING

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

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

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (4,1)

10-4

Vehicle Care

This vehicle has an airbag system. Before attempting to do your own service work, see Servicing the Airbag-Equipped Vehicle on page 3‑30. Keep a record with all parts receipts and list the mileage and the date of any service work performed. See Maintenance Records on page 11‑15. Notice: Even small amounts of contamination can cause damage to vehicle systems. Do not allow contaminants to contact the fluids, reservoir caps, or dipsticks.

Hood To open the hood:

1. Pull the handle with this symbol

on it. It is in front of the driver side door frame near the floor.

2. Go to the front of the vehicle and

lift up the secondary hood release, which is underneath the middle of the hood.

3. Lift the hood, release the hood prop from its retainer, and put the hood prop into the slot in the hood.

If the vehicle has an underhood lamp, it will automatically come on and stay on until the hood is closed. Before closing the hood, be sure all of the filler caps are on properly. Then lift the hood to relieve pressure on the hood prop. Remove the hood prop from the slot in the hood and return the prop to its retainer. Let the hood down and close it firmly.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (5,1)

Engine Compartment Overview

Vehicle Care

10-5

4.3L V6 Engine Shown (4.8L V8 Engine, 5.3L V8 Engine, and 6.0L V8 Engine Similar)

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (6,1)

10-6

Vehicle Care

1. Battery on page 10‑26. 2. Radiator Pressure Cap. See

Cooling System on page 10‑15.

3. Coolant Recovery Tank. See

Cooling System on page 10‑15.

4. Automatic Transmission Fluid

Dipstick. See “Checking the Fluid Level” under Automatic Transmission Fluid (4-Speed Transmission) on page 10‑9 or Automatic Transmission Fluid (6-Speed Transmission) on page 10‑11.

5. Engine Oil Fill Cap. See “When to Add Engine Oil” under Engine Oil on page 10‑6.

6. Engine Oil Dipstick. See

“Checking Engine Oil” under Engine Oil on page 10‑6.

7. Engine Air Cleaner/Filter on

page 10‑14.

8. Power Steering Fluid Reservoir.

See Power Steering Fluid on page 10‑22.

9. Brake Master Cylinder

Reservoir. See Brake Fluid on page 10‑24.

10. Windshield Washer Fluid

Reservoir. See “Adding Washer Fluid” under Washer Fluid on page 10‑22.

Engine Oil For diesel engine vehicles, see “Engine Oil” in the Duramax diesel supplement. 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 10‑8.

. 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.

GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12

Black plate (7,1)

Checking the oil level too soon after engine shutoff will not