2015 Chevrolet Silverado Owners Manual

Cleaning the System If the FCA system does not seem to operate properly, cleaning the outside of the windshield in front of the rearview mirror, and cleaning the front of the vehicle where radar sensors are located, may correct the issue.

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

{ Warning

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

. Provide enough time to avoid

a crash.

. Detect lane markings under

poor weather or visibility conditions. This can occur if the windshield or headlamps are blocked by dirt, snow, or ice; if they are not in

(Continued)

Warning (Continued)

proper condition; or if the sun shines directly into the camera.

. Detect road edges. . Detect lanes on winding or

hilly roads.

If LDW only detects lane markings on one side of the road, it will only warn you when departing the lane on the side where it has detected a lane marking. Always keep your attention on the road and maintain proper vehicle position within the lane, or vehicle damage, injury, or death could occur. Always keep the windshield, headlamps, and camera sensors clean and in good repair. Do not use LDW in bad weather conditions.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (67,1)

Driving and Operating

9-67

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

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

When LDW is on, @ is green if LDW is available to warn of a lane departure. If the vehicle crosses a detected lane marking without using the turn signal in that direction, @ changes to amber and flashes. Additionally, there will be three beeps, or the driver seat will pulse three times on the right or left, depending on the lane departure direction.

When the System Does Not Seem to Work Properly The system may not detect lanes as well when there are: . Close vehicles ahead. . Sudden lighting changes, such

as when driving through tunnels.

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

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (68,1)

9-68

Driving and Operating

If the vehicle has a yellow fuel cap, E85 or FlexFuel can be used in the vehicle. See E85 or FlexFuel on page 9-69. For all vehicles except those with the 6.2L V8 engine, use regular unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 87 or higher. Do not use gasoline with an octane rating below 87, as it may cause engine damage and will lower fuel economy. If the vehicle has the 6.2L V8 engine (VIN Code J), use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 91 or higher. Regular unleaded gasoline rated at 87 octane or higher can be used, but acceleration and fuel economy will be reduced, and an audible knocking noise may be heard. If this occurs, use a gasoline rated at 91 octane or higher as soon as possible. Otherwise, the engine could be damaged. If heavy

knocking is heard when using gasoline with a 91 octane rating or higher, the engine needs service.

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

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

{ Caution

Do not use fuel containing methanol. It can corrode metal parts in the fuel system and also damage plastic and rubber parts. That damage would not be covered under the vehicle warranty.

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

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (69,1)

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 may not pass a smog-check test. See Malfunction Indicator Lamp on page 5-21. If this occurs, return to your authorized dealer for diagnosis. If it is determined that the condition is caused by the type of fuel used, repairs may not be covered by the vehicle warranty.

Driving and Operating

9-69

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

Fuel Additives To keep fuel systems clean, TOP TIER Detergent Gasoline is recommended. See Fuel on page 9-67. If TOP TIER Detergent Gasoline is not available, one bottle of Fuel System Treatment PLUS added to the fuel tank at every engine oil change can help. Fuel System

Treatment PLUS is the only gasoline additive recommended by General Motors. It is available at your dealer. Do not use additives with E85 or FlexFuel.

E85 or FlexFuel Vehicles with a yellow fuel cap can use either unleaded gasoline or fuel containing up to 85% ethanol (E85). All other vehicles should use only the unleaded gasoline as described in Fuel on page 9-67. The use of E85 or FlexFuel is encouraged when the vehicle is designed to use it. E85 or FlexFuel is made from renewable sources. To help locate fuel stations that carry E85 or FlexFuel, the U.S. Department of Energy has an alternative fuels website. See www.afdc.energy.gov/afdc/locator/ stations.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (70,1)

9-70

Driving and Operating

E85 or FlexFuel should meet ASTM Specification D 5798 or CAN/ CGSB–3.512 in Canada. Do not use the fuel if the ethanol content is greater than 85%. Fuel mixtures that do not meet ASTM or CGSB specifications can affect driveability and could cause the malfunction indicator lamp to come on. For the 6.0L V8 engine, after refueling, the vehicle calculates the composition of the fuel. It is not recommended to repeatedly switch between fuels. If fuels are switched frequently, add as much fuel as possible and do not add less than 11 L (3 gal) when refueling. Drive at least 11 km (7 mi) immediately after refueling to allow the vehicle to adapt to the change in ethanol concentration. Because E85 or FlexFuel has less energy per liter (gallon) than gasoline, the vehicle will need to be refilled more often. See Filling the Tank on page 9-70.

{ Caution Some additives are not compatible with E85 or FlexFuel and can harm the vehicle's fuel system. Do not add anything to E85 or FlexFuel. Damage caused by additives would not be covered by the vehicle warranty.

{ 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.

Filling the Tank If the vehicle has a diesel engine, see the Duramax diesel supplement for more information.

{ 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)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (71,1)

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.

Driving and Operating

9-71

When replacing the fuel cap, turn it clockwise until it clicks. It will require more effort to turn the fuel cap on the last turn as you tighten it. 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 5-21. The TIGHTEN GAS CAP message displays on the Driver Information Center (DIC) if the fuel cap is not properly installed. See Fuel System Messages on page 5-39 for more information.

The fuel cap is behind a hinged fuel door on the driver side of the vehicle. Vehicles that have a FlexFuel badge and a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See E85
or FlexFuel on page 9-69. To remove the fuel cap, turn it slowly counterclockwise. If the vehicle is a dual fuel tank chassis cab model, and it runs out of fuel, refuel the front fuel tank first to ensure a quick restart. 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 10-100.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (72,1)

9-72

Driving and Operating

{ 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.

{ Caution

If a new fuel cap is needed, be sure to get the right type of cap from your dealer. The wrong type of fuel cap may not fit properly, may cause the malfunction indicator lamp to light, and could damage the fuel tank and emissions system. See Malfunction Indicator Lamp on page 5-21.

Filling a Portable Fuel Container

{ Warning

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

. Use approved fuel

containers.

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

. Place the container on the

ground.

. Place the nozzle inside the fill

opening of the container before dispensing fuel, and

(Continued)

Warning (Continued)

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.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (73,1)

Trailer Towing

General Towing Information Only use towing equipment that has been designed for the vehicle. Contact your dealer or trailering dealer for assistance with preparing the vehicle for towing a trailer. Read the entire section before towing a trailer. For towing a disabled vehicle, see Towing the Vehicle on page 10-95. For towing the vehicle behind another vehicle such as a motor home, see Recreational Vehicle Towing on page 10-95.

Driving and Operating

9-73

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. Turn off Park Assist when towing.

{ Warning

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

. Do not drive with the liftgate,

trunk/hatch, or rear-most window open.

. Fully open the air outlets on

or under the instrument panel.

. Also adjust the climate

control system to a setting that brings in only outside air. See “Climate Control Systems” in the Index. For more information about Carbon Monoxide, see Engine Exhaust on page 9-33.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (74,1)

9-74

Driving and Operating

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

Passing More passing distance is needed when towing a trailer. The combination will not accelerate as quickly and is longer so it is necessary to go much farther beyond the passed vehicle before returning to the lane. Backing Up Hold the bottom of the steering wheel with one hand. To move the trailer to the left, move that hand to the left. To move the trailer to the right, move your hand to the right. Always back up slowly and, if possible, have someone guide you. Making Turns

{ Caution

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

(Continued)

Caution (Continued)

The vehicle could be damaged. Avoid making very sharp turns while trailering.

When turning with a trailer, make wider turns than normal. Do this so the trailer will not strike soft shoulders, curbs, road signs, trees, or other objects. Avoid jerky or sudden maneuvers. Signal well in advance. If the trailer turn signal bulbs burn out, the arrows on the instrument cluster will still flash for turns. It is important to check occasionally to be sure the trailer bulbs are still working. Driving on Grades Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might get hot and no longer work well.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (75,1)

Driving and Operating

9-75

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 9-39. 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 transmission in P (Park) for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating on page 10-25.

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

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (76,1)

9-76

Driving and Operating

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. If the vehicle is bi-fuel, see the bi-fuel supplement. Do not tow a trailer during break-in. See New Vehicle Break-In on page 9-23.

{ Warning

{ Caution

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 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.

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.

See Vehicle Load Limits on page 9-15 for more information about the vehicle's maximum load capacity. To identify the trailering capacity of the vehicle, read the information in “Weight of the Trailer” 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.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (77,1)

Driving and Operating

9-77

For kingpin weight and trailer tongue weight information, see “Weight of the Trailer Tongue” later in this section. Use the following chart to determine how much the vehicle can weigh, based upon the vehicle model and options. Weights listed apply for conventional trailers and fifth-wheel trailers unless otherwise noted.

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. 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. 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.

Trailer weight rating (TWR) for 1500
series trucks is calculated assuming the tow vehicle has the driver, a front seat passenger, and all required trailering equipment. Weight of additional optional equipment, passengers, and cargo in the tow vehicle must be subtracted from the trailer weight rating. Trailer weight rating (TWR) for 2500 and 3500 series trucks is calculated assuming the tow vehicle has only the driver but all required trailering equipment. Weight of additional optional equipment, passengers, and cargo in the tow vehicle must be subtracted from the trailer weight rating.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (78,1)

9-78

Driving and Operating

Vehicle

Axle Ratio

1500 Series 2WD Regular Cab Standard Box

4.3L V6 (b) 4.3L V6 (b) 5.3L V8
5.3L V8

1500 Series 2WD Double Cab Standard Box

4.3L V6 (b) 5.3L V8
5.3L V8
5.3L V8
6.2L V8
6.2L V8

1500 Series 2WD Crew Cab Standard Box

4.3L V6 (b) 5.3L V8
5.3L V8

3.23
4.10
3.08
3.42

3.23
3.08
3.42
3.73
3.23
3.42

3.23
3.08
3.42

Maximum Trailer

Weight (c)

2 767 kg (6,100 lb) 2 087 kg (4,600 lb) 3 175 kg (7,000 lb) 4 082 kg (9,000 lb)

2 540 kg (5,600 lb) 2 948 kg (6,500 lb) 4 309 kg (9,500 lb) 5 080 kg (11,200 lb) 4 309 kg (9,500 lb) 5 443 kg (12,000 lb)

GCWR (a)

4 990 kg (11,000 lb) 4 309 kg (9,500 lb) 5 443 kg (12,000 lb) 6 350 kg (14,000 lb)

4 990 kg (11,000 lb) 5 443 kg (12,000 lb) 6 804 kg (15,000 lb) 7 575 kg (16,700 lb) 6 804 kg (15,000 lb) 8 029 kg (17,700 lb)

2 495 kg (5,500 lb) 2 903 kg (6,400 lb) 4 264 kg (9,400 lb)

4 990 kg (11,000 lb) 5 443 kg (12,000 lb) 6 804 kg (15,000 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (79,1)

Vehicle

Axle Ratio

5.3L V8
6.2L V8
6.2L V8

1500 Series 2WD Crew Cab Short Box (b)

4.3L V6
5.3L V8
5.3L V8
5.3L V8
6.2L V8
6.2L V8

1500 Series 2WD Regular Cab Long Box

4.3L V6 (b) 5.3L V8
5.3L V8

1500 Series 4WD Regular Cab Standard Box

4.3L V6 (b)

3.73
3.23
3.42

3.23
3.08
3.42
3.73
3.23
3.42

3.23
3.08
3.42

3.42

Driving and Operating

9-79

Maximum Trailer

Weight (c)

4 990 kg (11,000 lb) 4 219 kg (9,300 lb) 5 398 kg (11,900 lb)

2 540 kg (5,600 lb) 2 903 kg (6,400 lb) 4 264 kg (9,400 lb) 5 035 kg (11,100 lb) 4 264 kg (9,400 lb) 5 443 kg (12,000 lb)

GCWR (a)

7 575 kg (16,700 lb) 6 804 kg (15,000 lb) 8 029 kg (17,700 lb)

4 990 kg (11,000 lb) 5 443 kg (12,000 lb) 6 804 kg (15,000 lb) 7 575 kg (16,700 lb) 6 804 kg (15,000 lb) 8 029 kg (17,700 lb)

2 676 kg (5,900 lb) 3 085 kg (6,800 lb) 4 445 kg (9,800 lb)

4 990 kg (11,000 lb) 5 443 kg (12,000 lb) 6 804 kg (15,000 lb)

3 447 kg (7,600 lb)

5 806 kg (12,800 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (80,1)

9-80

Driving and Operating

Vehicle

Axle Ratio

5.3L V8
5.3L V8

1500 Series 4WD Double Cab Standard Box

4.3L V6 (b) 5.3L V8
5.3L V8
5.3L V8
6.2L V8
6.2L V8

1500 Series 4WD Crew Cab Standard Box

4.3L V6 (b) 5.3L V8
5.3L V8
5.3L V8
6.2L V8
6.2L V8

3.08
3.42

3.42
3.08
3.42
3.73
3.23
3.42

3.42
3.08
3.42
3.73
3.23
3.42

Maximum Trailer

Weight (c)

3 039 kg (6,700 lb) 3 946 kg (8,700 lb)

3 266 kg (7,200 lb) 2 812 kg (6,200 lb) 4 173 kg (9,200 lb) 4 990 kg (11,000 lb) 4 173 kg (9,200 lb) 5 398 kg (11,900 lb)

3 175 kg (7,000 lb) 2 767 kg (6,100 lb) 4 128 kg (9,100 lb) 4 899 kg (10,800 lb) 4 128 kg (9,100 lb) 5 307 kg (11,700 lb)

GCWR (a)

5 443 kg (12,000 lb) 6 350 kg (14,000 lb)

5 806 kg (12,800 lb) 5 443 kg (12,000 lb) 6 804 kg (15,000 lb) 7 575 kg (16,700 lb) 6 804 kg (15,000 lb) 8 029 kg (17,700 lb)

5 806 kg (12,800 lb) 5 443 kg (12,000 lb) 6 804 kg (15,000 lb) 7 575 kg (16,700 lb) 6 804 kg (15,000 lb) 8 029 kg (17,700 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (81,1)

Vehicle

Axle Ratio

1500 Series 4WD Crew Cab Short Box (b)

4.3L V6
5.3L V8
5.3L V8
5.3L V8
6.2L V8
6.2L V8

1500 Series 4WD Regular Cab Long Box

4.3L V6 (b) 5.3L V8
5.3L V8

2500 Series 2WD Double Cab Standard Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

3.42
3.08
3.42
3.73
3.23
3.42

3.42
3.08
3.42

3.73
4.10
4.10

Driving and Operating

9-81

Maximum Trailer

Weight (c)

GCWR (a)

3 221 kg (7,100 lb) 2 812 kg (6,200 lb) 4 173 kg (9,200 lb) 4 944 kg (10,900 lb) 4 173 kg (9,200 lb) 5 353 kg (11,800 lb)

5 806 kg (12,800 lb) 5 443 kg (12,000 lb) 6 804 kg (15,000 lb) 7 575 kg (16,700 lb) 6 804 kg (15,000 lb) 8 029 kg (17,700 lb)

3 357 kg (7,400 lb) 2 948 kg (6,500 lb) 4 309 kg (9,500 lb)

5 806 kg (12,800 lb) 5 443 kg (12,000 lb) 6 804 kg (15,000 lb)

4 536 kg (10,000 lb) 5 897 kg (13,000 lb) 6 577 kg (14,500 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (82,1)

9-82

Driving and Operating

Vehicle

Axle Ratio

2500 Series 2WD Crew Cab Standard Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

2500 Series 2WD Regular Cab Long Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

2500 Series 2WD Double Cab Long Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

2500 Series 2WD Crew Cab Long Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

3.73
4.10
4.10

3.73
4.10
4.10

3.73
4.10
4.10

3.73
4.10
4.10

Maximum Trailer

Weight (c)

GCWR (a)

4 445 kg (9,800 lb) 5 897 kg (13,000 lb) 6 486 kg (14,300 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

4 672 kg (10,300 lb) 5 897 kg (13,000 lb) 6 713 kg (14,800 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

4 491 kg (9,900 lb) 5 897 kg (13,000 lb) 6 532 kg (14,400 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

4 400 kg (9,700 lb) 5 897 kg (13,000 lb) 6 441 kg (14,200 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (83,1)

Vehicle

Axle Ratio

2500 Series 4WD Double Cab Standard Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

2500 Series 4WD Crew Cab Standard Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

2500 Series 4WD Regular Cab Long Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

2500 Series 4WD Double Cab Long Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

3.73
4.10
4.10

3.73
4.10
4.10

3.73
4.10
4.10

3.73
4.10
4.10

Driving and Operating

9-83

Maximum Trailer

Weight (c)

GCWR (a)

4 400 kg (9,700 lb) 5 897 kg (13,000 lb) 6 441 kg (14,200 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

4 309 kg (9,500 lb) 5 897 kg (13,000 lb) 6 350 kg (14,000 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

4 536 kg (10,000 lb) 5 897 kg (13,000 lb) 6 577 kg (14,500 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

4 355 kg (9,600 lb) 5 897 kg (13,000 lb) 6 396 kg (14,100 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (84,1)

9-84

Driving and Operating

Vehicle

Axle Ratio

Maximum Trailer

Weight (c)

GCWR (a)

2500 Series 4WD Crew Cab Long Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

3500 Series 2WD Regular Cab Long Box

6.0L V8 (Single Rear Wheels) Conventional Trailer 6.0L V8 (Single Rear Wheels) Fifth-Wheel Trailer 6.0L V8 (Dual Rear Wheels) 6.0L V8 (Dual Rear Wheels) Conventional Trailer 6.0L V8 (Dual Rear Wheels) Fifth-Wheel Trailer

3500 Series 2WD Crew Cab Standard Box

6.0L V8
6.0L V8 – Conventional Trailer

3.73
4.10
4.10

4.10

4.10

3.73
4.10

4.10

3.73
4.10

4 218 kg (9,300 lb) 5 897 kg (13,000 lb) 6 260 kg (13,800 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

5 897 kg (13,000 lb)

9 299 kg (20,500 lb)

6 623 kg (14,600 lb)

9 299 kg (20,500 lb)

4 400 kg (9,700 lb) 6 441 kg (14,200 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

6 441 kg (14,200 lb)

9 299 kg (20,500 lb)

4 355 kg (9,600 lb) 5 897 kg (13,000 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (85,1)

Vehicle

Axle Ratio

6.0L V8 Fifth-Wheel Trailer

3500 Series 2WD Double Cab Long Box

6.0L V8 (Single Rear Wheels) 6.0L V8 (Single Rear Wheels) Conventional Trailer 6.0L V8 (Single Rear Wheels) Fifth-Wheel Trailer 6.0L V8 (Dual Rear Wheels) 6.0L V8 (Dual Rear Wheels)

3500 Series 2WD Crew Cab Long Box

6.0L V8 (Single Rear Wheels) 6.0L V8 (Single Rear Wheels) Conventional Trailer 6.0L V8 (Single Rear Wheels) Fifth-Wheel Trailer 6.0L V8 (Dual Rear Wheels) 6.0L V8 (Dual Rear Wheels)

4.10

3.73
4.10

4.10

3.73
4.10

3.73
4.10

4.10

3.73
4.10

Driving and Operating

9-85

Maximum Trailer

Weight (c)

GCWR (a)

6 396 kg (14,100 lb)

9 299 kg (20,500 lb)

4 400 kg (9,700 lb) 5 897 kg (13,000 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

6 441 kg (14,200 lb)

9 299 kg (20,500 lb)

4 218 kg (9,300 lb) 6 260 kg (13,800 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

4 309 kg (9,500 lb) 5 897 kg (13,000 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

6 350 kg (14,000 lb)

9 299 kg (20,500 lb)

4 173 kg (9,200 lb) 6 214 kg (13,700 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (86,1)

9-86

Driving and Operating

Vehicle

Axle Ratio

3500 Series 4WD Regular Cab Long Box

6.0L V8 (Single Rear Wheels) 6.0L V8 (Single Rear Wheels) Conventional Trailer 6.0L V8 (Single Rear Wheels) Fifth-Wheel Trailer 6.0L V8 (Dual Rear Wheels) 6.0L V8 (Dual Rear Wheels)

3500 Series 4WD Crew Cab Standard Box

6.0L V8
6.0L V8 – Conventional Trailer 6.0L V8 – Fifth-Wheel Trailer

3500 Series 4WD Double Cab Long Box

6.0L V8 (Single Rear Wheels) 6.0L V8 (Single Rear Wheels) Conventional Trailer

3.73
4.10

4.10

3.73
4.10

3.73
4.10
4.10

3.73
4.10

Maximum Trailer

Weight (c)

GCWR (a)

4 445 kg (9,800 lb) 5 897 kg (13,000 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

6 486 kg (14,300 lb)

9 299 kg (20,500 lb)

4 264 kg (9,400 lb) 6 305 kg (13,900 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

4 264 kg (9,400 lb) 5 897 kg (13,000 lb) 6 305 kg (13,900 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb) 9 299 kg (20,500 lb)

4 264 kg (9,400 lb) 5 897 kg (13,000 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (87,1)

Vehicle

Axle Ratio

6.0L V8 (Single Rear Wheels) Fifth-Wheel Trailer 6.0L V8 (Dual Rear Wheels) 6.0L V8 (Dual Rear Wheels)

3500 Series 4WD Crew Cab Long Box

6.0L V8 (Single Rear Wheels) 6.0L V8 (Single Rear Wheels) Conventional Trailer 6.0L V8 (Single Rear Wheels) Fifth-Wheel Trailer 6.0L V8 (Dual Rear Wheels) 6.0L V8 (Dual Rear Wheels)

3500 Series Chassis Cab 2WD/4WD

6.0L V8
6.0L V8

4.10

3.73
4.10

3.73
4.10

4.10

3.73
4.10

3.73
4.10

Driving and Operating

9-87

Maximum Trailer

Weight (c)

GCWR (a)

6 305 kg (13,900 lb)

9 299 kg (20,500 lb)

4 082 kg (9,000 lb) 6 124 kg (13,500 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

4 173 kg (9,200 lb) 5 897 kg (13,000 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

6 214 kg (13,700 lb)

9 299 kg (20,500 lb)

3 992 kg (8,800 lb) 6 033 kg (13,300 lb)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

(d) (d)

7 257 kg (16,000 lb) 9 299 kg (20,500 lb)

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (88,1)

9-88

Driving and Operating

Vehicle

Axle Ratio

Maximum Trailer

Weight (c)

GCWR (a)

(a) The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment, and conversions. The GCWR for the vehicle should not be exceeded. (b) This model is neither designed nor intended to tow fifth-wheel or gooseneck trailers. (c) For chassis cab and pickup box delete vehicles, choose an appropriate hitch and load the truck and trailer within the limits of GCWR, GVWR, and RGAWR. (d) Maximum Trailer Weight cannot be provided because total vehicle weight is unknown.

the vehicle can carry, which will also reduce the trailer weight the vehicle can tow.

Trailer tongue weight (1) should be 10–15% and fifth-wheel or gooseneck kingpin weight should be 15–25% of the loaded trailer weight (2) up to the maximums for vehicle series and hitch type.

Ask your dealer for trailering information or advice. Weight of the Trailer Tongue The tongue load (1) of any trailer is very important because it is also part of the vehicle weight. 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 as well as trailer tongue weight. Vehicle options, equipment, passengers and cargo in the vehicle reduce the amount of tongue weight

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (89,1)

Driving and Operating

9-89

Axle Weight Rating). See “Total Weight on the Vehicle's Tires” later in this section. 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. If a cargo carrier is used in the trailer hitch receiver, choose a carrier that positions the load as close to the vehicle as possible. Make sure the total weight, including the carrier, is no more than half of the maximum allowable tongue weight for the vehicle or 227 kg (500 lb), whichever is less.

Vehicle Series

1500
1500
2500/3500
Standard Box 2500/ 3500 Long Box 2500
3500 Single Rear Wheels 3500 Dual Rear Wheels

Hitch Type

Weight-Carrying

Weight-Distributing Weight-Carrying or Weight-Distributing Weight-Carrying or Weight-Distributing

Maximum Tongue

Weight

363 kg (800 lb) 544 kg (1,200 lb) 680 kg (1,500 lb)

907 kg (2,000 lb)

Fifth-Wheel Gooseneck Fifth-Wheel Gooseneck

1 361 kg (3,000 lb) 1 814 kg (4,000 lb)

Fifth-Wheel Gooseneck

2 495 kg (5,500 lb)

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.

Trailer rating may be limited by the vehicle's ability to carry tongue weight. Tongue or kingpin weight cannot cause the vehicle to exceed the GVWR (Gross Vehicle Weight Rating) or the RGAWR (Rear Gross

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (90,1)

9-90

Driving and Operating

Total Weight on the Vehicle's Tires Be sure the vehicle's tires are inflated to the inflation pressures found on the Certification/Tire label on the center pillar or see Vehicle Load Limits on page 9-15. Make sure not to exceed the GVWR limit for the vehicle, or the RGAWR, with the tow vehicle and trailer fully loaded for the trip including the weight of the trailer tongue. If using a weight-distributing hitch, make sure not to exceed the RGAWR before applying the weight distribution spring bars. Weight of the Trailering Combination It is important that the combination of the tow vehicle and trailer does not exceed any of its weight ratings — GCWR, GVWR, RGAWR, Trailer Weight Rating, or Tongue Weight. The only way to be sure it is

not exceeding any of these ratings is to weigh the tow vehicle and trailer combination, fully loaded for the trip, getting individual weights for each of these items.

Towing Equipment

Hitches The correct hitch equipment helps maintain combination control. Many trailers can be towed with a weight-carrying hitch which simply features a coupler latched to the hitch ball, or a tow eye latched to a pintle hook. Other trailers may require a weight-distributing hitch that uses spring bars to distribute the trailer tongue weight among the two vehicle and trailer axles. Fifth-wheel and gooseneck hitches may also be used. See “Weight of the Trailer Tongue” under Trailer Towing on page 9-76 for rating limits with various hitch types.

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. Consider using sway controls with any trailer. Ask a trailering professional about sway controls or refer to the trailer manufacturer's recommendations and instructions. Weight-Distributing Hitch and Adjustment A weight distributing hitch may be useful with some trailers. Use the following guidelines to determine if a weight distributing hitch should be used.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (91,1)

Driving and Operating

9-91

Vehicle Series

Trailer Weight

1500

Up to 3175 kg (7,000 lb)

1500
2500/3500

Over 3175 kg (7,000 lb) Up to 8165 kg (18,000 lb)

Weight Distributing Hitch

Usage Optional

Required Optional

Hitch Distribution

Refer to trailer manufacturer’s recommendation

50%

Refer to trailer manufacturer’s recommendation

When using a weight-distributing hitch, measure distance (1) before coupling the trailer to the hitch ball. Measure the height again after the trailer is coupled and adjust the spring bars so the distance (1) is as close as possible to halfway between the two measurements. Fifth-Wheel and Gooseneck Trailering Fifth-wheel and gooseneck trailers can be used with many pickup models. These trailers place a larger percentage of the weight

(kingpin weight) on the tow vehicle than conventional trailers. Make sure this weight does not cause the vehicle to exceed GAWR or GVWR. Fifth-wheel or gooseneck kingpin weight should be 15 to 25% of the trailer weight up to the maximum amount specified in the trailering chart for the vehicle. See “Weight of the Trailer” under Trailer Towing on page 9-76. The hitch should be located in the pickup bed so that its centerline is over or slightly in front of the rear axle. Take care that it is not so far

1. Body to Ground Distance 2. Front of Vehicle

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (92,1)

9-92

Driving and Operating

forward that it will contact the back of the cab in sharp turns. This is especially important for short box pickups. Trailer pin box extensions and sliding fifth-wheel hitch assemblies can help this condition. There should be at least 15 cm (6 in) of clearance between the top of the pickup box and the bottom of the trailer shelf that extends over the box. Make sure the hitch is attached to the tow vehicle frame rails. Do not use the pickup box for support. 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. Instructions about safety chains may be provided by the hitch

manufacturer or by the trailer manufacturer. If the trailer being towed weighs up to 2 271 kg (5,000 lb) with a factory-installed step bumper, safety chains may be attached to the attaching points on the bumper; otherwise, safety chains should be attached to holes on the trailer hitch platform. Always leave just enough slack so the combination can turn. Never allow safety chains to drag on the ground. Trailer Brakes A loaded trailer that weighs more than 900 kg (2,000 lb) 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. Do not tap into the vehicle's hydraulic brake system.

Auxiliary Battery The auxiliary battery provision can be used to supply electrical power to additional equipment that may be added, such as a slide-in camper. If equipped, this relay will be on the driver side of the vehicle, next to the underhood electrical center. Be sure to follow the proper installation instructions included with any electrical equipment that is installed.

{ Caution

Leaving electrical equipment on for extended periods will drain the battery. Always turn off electrical equipment when not in use and do not use equipment that exceeds the maximum amperage rating of 30 amps for the auxiliary battery provision.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (93,1)

Driving and Operating

9-93

Trailer Wiring Harness The vehicle is equipped with one of the following wiring harnesses for towing a trailer or hauling a slide-in camper.

Basic Trailer Wiring All regular, double cab, and crew cab pickups have a seven-wire trailer towing harness. For vehicles not equipped with heavy-duty trailering, the harness is secured to the vehicle's frame behind the spare tire mount. The harness requires the installation of a trailer connector, which is available through your dealer.

Heavy-Duty Trailer Wiring Harness Package

For vehicles equipped with heavy-duty trailering, the harness connector is mounted in the bumper. The seven-wire harness contains the following trailer circuits: . Green/Violet: Left Stop/Turn

Signal

. Yellow/Gray: Right Stop/Turn

Signal

. Gray/Brown: Taillamps/Parking

Lamps

. White: Ground . White/Green: Back-up Lamps . Red/Green: Battery Feed . Dark Blue: Trailer Brake If charging a remote (non-vehicle) battery, press the Tow/Haul Mode button, if equipped, at the end of the shift lever. This will boost the vehicle system voltage and properly charge the battery. If the trailer is too light for Tow/Haul Mode, or the vehicle is not equipped with Tow/ Haul, turn on the headlamps as a second way to boost the vehicle system and charge the battery.

Camper/Fifth-Wheel Trailer Wiring Package The seven-wire camper harness is under the rear bumper, attached to the frame near the rear crossmember. A connector must be added to the wiring harness that connects to the camper.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (94,1)

9-94

Driving and Operating

The harness contains the following camper/trailer circuits: . Green/Violet: Left Stop/Turn

Signal

. Yellow/Gray: Right Stop/Turn

Signal

. Gray/Brown: Taillamps/Parking

Lamps

. White: Ground . White/Green: Back-up Lamps . Red/Green: Battery Feed . Dark Blue: Trailer Brake If the vehicle is equipped with the heavy-duty trailering option, see “Heavy-Duty Trailer Wiring Harness Package” earlier in this section.

When the camper-wiring harness is ordered without the heavy-duty trailering package, a seven-wire harness with a seven-pin connector is at the rear of the vehicle and is tied to the vehicle's frame. Electric Brake Control Wiring Provisions These wiring provisions are included with the vehicle as part of the trailer wiring package. These provisions are for an electric brake controller. The harness should be installed by your dealer or a qualified service center.

Tow/Haul Mode

Pressing this button at the end of the shift lever turns on and off the Tow/Haul Mode.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (95,1)

. 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.

Driving and Operating

9-95

Integrated Trailer Brake Control System The vehicle may have an Integrated Trailer Brake Control (ITBC) system for use with electric trailer brakes or most electric over hydraulic trailer brakes.

This symbol is on the Trailer Brake Control Panel on vehicles with an ITBC system. The power output to the trailer brakes is based on the amount of brake pressure being applied by the vehicle’s brake system, and on the type of trailer brakes detected. This available power output to the trailer brakes can be adjusted to a wide range of trailering situations.

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 9-39. Tow/Haul is designed to be most effective when the vehicle and trailer combined weight is at least 75% of the vehicle's Gross Combined Weight Rating (GCWR). See “Weight of the Trailer” under Trailer Towing on page 9-76. Tow/ Haul is most useful under the following driving conditions: . When pulling a heavy trailer or a

large or heavy load through rolling terrain.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14

Black plate (96,1)

9-96

Driving and Operating

The ITBC system is integrated with the vehicle’s brake, antilock brake, and StabiliTrak systems. In trailering conditions that cause the vehicle’s antilock brake or StabiliTrak systems to activate, power sent to the trailer's brakes will be automatically adjusted to minimize trailer wheel lock-up. This does not imply that the trailer has StabiliTrak. If the vehicle’s brake, antilock brake, or StabiliTrak systems are not functioning properly, the ITBC system may not be fully functional or may not function at all. Make sure all of these systems are fully operational to ensure full functionality of the ITBC system. The ITBC system is powered through the vehicle's electrical system. Turning the ignition off will also turn off the ITBC system. The ITBC system is fully functional only when the ignition is in ON/RUN.

{ Warning

Trailer Brake Control Panel

Connecting a trailer that has an air brake system may result in reduced or complete loss of trailer braking. There may be an increase in stopping distance or trailer instability which could result in personal injury or damage to the vehicle, trailer, or other property. Use the ITBC system only with electric or electric over hydraulic trailer brakes.

1. Manual Trailer Brake Apply

Lever

2. Trailer Gain Adjustment

Buttons

The ITBC system has a control panel on the instrument panel to the left of the steering column. See Instrument Panel on page 1-2. The control panel allows adjustment to the amount of output, referred to as Trailer Gain, available to the trailer brakes and allows manual application of the trailer brakes.

Chevrolet 2015i Silverado Owner Manual (GMNA-Localizing-U.S./Canada/ Mexico-8425172) - 2015 - CRC - 6/20/14