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changes from amber to red and increases in size the closer the object.


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Safety Alert Seat will pulse five times. Beeps for FPA are higher pitched than for RPA. Turning the Features On or Off


The instrument cluster may have a parking assist display with bars that show “distance to object” and object location information for the Parking Assist system. As the object gets closer, more bars light up and the bars change color from yellow to amber to red. When an object is first detected in the rear, one beep will be heard from the rear, or both sides of the Safety Alert Seat will pulse two times. When an object is very close (<0.6 m (2 ft) in the vehicle rear, or <0.3 m (1 ft) in the vehicle front), a continuous beep will sound from the front or rear, or both sides of the


The X button on the center stack is used to turn on or off the Front and Rear Parking Assist. The indicator light in the button comes on when the features are on and turns off when the features have been disabled. Front and Rear Parking Assist can be turned off, on, or on with towbar through vehicle personalization. See “Park Assist” under Vehicle Personalization 0 162. If the parking assist is turned off through vehicle personalization, the parking assist button on the center stack will be disabled. To turn the parking assist on again, select On in the vehicle personalization menu. The On with


Towbar setting allows for the parking assist to work properly with a small item attached to the trailer hitch. Turn off parking assist when towing a trailer. To turn the rear parking assist symbols or guidance lines on or off, see “Rear Camera” under Vehicle Personalization 0 162. Disconnecting the Rear Vision Camera (RVC) The RVC must be disconnected if the tailgate needs to be removed. The RVC is disconnected by removing the connector from the electrical junction block mounted on the left side of the cross member of the vehicle frame. After disconnecting, the cap mounted next to the camera connector must be relocated so that the open terminals on the junction block are covered.


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{ Warning


FCA is a warning system and does not apply the brakes. When approaching a slower-moving or stopped vehicle ahead too rapidly, or when following a vehicle too closely, FCA may not provide a warning with enough time to help avoid a crash. FCA does not warn of pedestrians, animals, signs, guardrails, bridges, construction barrels, or other objects. Be ready to take action and apply the brakes. For more information, see Defensive Driving 0 256.


FCA can be disabled with the FCA steering wheel control. Detecting the Vehicle Ahead


Assistance Systems for Driving If equipped, when driving the vehicle in a forward gear, Forward Collision Alert (FCA), Lane Departure Warning (LDW), and/or Lane Keep Assist (LKA) can help to avoid a crash or reduce crash damage.


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


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311


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


{ Warning


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


(Continued)


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Warning (Continued)


proper condition. Keep the windshield, headlamps, and FCA sensors clean and in good repair.


Collision Alert


braking to occur more rapidly which can cause a brief, mild deceleration. Continue to apply the brake pedal as needed. Cruise control may be disengaged when the Collision Alert occurs.


Tailgating Alert


Selecting the Alert Timing


The vehicle ahead indicator will display amber when you are following a vehicle ahead much too closely.


The FCA control is on the steering wheel. Press [ to set the FCA timing to Far, Medium, Near, or Off. The first button press shows the current setting on the DIC. Additional button presses will change this setting. The chosen setting will remain until it is changed and will affect the timing of both the Collision Alert and the Tailgating Alert features. The timing of both alerts will vary based on vehicle speed. The faster the vehicle speed, the farther away the alert will occur. Consider traffic and weather conditions when selecting the alert


When your vehicle approaches another detected vehicle too rapidly, the red FCA display will flash on the windshield. Also, eight rapid high-pitched beeps will sound from the front, or both sides of the Safety Alert Seat will pulse five times. When this Collision Alert occurs, the brake system may prepare for driver


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timing. The range of selectable alert timing may not be appropriate for all drivers and driving conditions. Unnecessary Alerts FCA may provide unnecessary alerts for turning vehicles, vehicles in other lanes, objects that are not vehicles, or shadows. These alerts are normal operation and the vehicle does not need service. Cleaning the System If the FCA system does not seem to operate properly, cleaning the outside of the windshield 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) (2500/3500 Series) 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 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


(Continued)


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313


Warning (Continued)


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.


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.


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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.


Lane Keep Assist (LKA) (1500 Series) If equipped, LKA may help avoid crashes due to unintentional lane departures. It may assist by gently turning the steering wheel if the vehicle approaches a detected lane marking without using a turn signal in that direction. It may also provide a Lane Departure Warning (LDW) system alert as the lane marking is crossed. The LKA system will not assist or provide an LDW alert if it detects that you are actively steering. Override LKA by turning the steering wheel. LKA uses a


camera to detect lane markings between 60 km/h (37 mph) and 180 km/h (112 mph).


{ Warning The LKA system does not continuously steer the vehicle. It may not keep the vehicle in the lane or give a Lane Departure Warning (LDW) alert, even if a lane marking is detected. The LKA and LDW systems may not:


. Provide an alert or enough


steering assist to avoid a lane departure or 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 proper condition, or if the sun shines directly into the camera.


. Detect road edges.


(Continued)


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Warning (Continued)


. Detect lanes on winding or


hilly roads.


If LKA only detects lane markings on one side of the road, it will only assist or provide an LDW alert when approaching the lane on the side where it has detected a lane marking. Even with LKA and LDW, you must steer the vehicle. 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 LKA in bad weather conditions.


{ Warning


Using LKA while towing a trailer or on slippery roads could cause loss of control of the vehicle and a crash. Turn the system off.


How the System Works The LKA camera sensor is on the windshield ahead of the rearview mirror. To turn LKA on and off, press A on the center stack.


When on, A is green if LKA is available to assist and provide LDW alerts. It may assist by gently turning the steering wheel and display A as amber if the vehicle approaches a detected lane marking without using a turn signal in that


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315


direction. It may also provide an LDW alert by flashing A amber as the lane marking is crossed. 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. The LKA system does not continuously steer the vehicle. If LKA does not detect active driver steering, an alert and chime may be provided. Move the steering wheel to dismiss. When the System Does Not Seem to Work Properly The system performance may be affected by: . Close vehicles ahead. . Sudden lighting changes, such


as when driving through tunnels.


. Banked roads. . Roads with poor lane markings,


such as two-lane roads.


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If the LKA system is not functioning properly when lane markings are clearly visible, cleaning the windshield may help. LKA assistance and/or 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 LKA off if these conditions continue.


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.


If the vehicle has a yellow fuel cap, E85 or FlexFuel can be used in the vehicle. See E85 or FlexFuel 0 318. 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.


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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.


California Fuel Requirements If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that


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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 (Check Engine Light) 0 139. 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.


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


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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 0 316. 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 0 316.


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. 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 0 319.


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.


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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 use a cell phone


while refueling.


. Do not reenter the vehicle


while pumping fuel.


(Continued)


Warning (Continued)


. Keep children away from


the fuel pump and never let children pump fuel.


. Fuel can spray out if the fuel


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


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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 0 318. 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. { Warning


Overfilling the fuel tank by more than three clicks of a standard fill nozzle may cause:


. Vehicle performance issues, including engine stalling and damage to the fuel system.


. Fuel spills. . Potential fuel fires.


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Be careful not to spill fuel. 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 0 441. 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 (Check Engine Light) 0 139. The TIGHTEN GAS CAP message displays on the Driver Information Center (DIC) if the fuel cap is not properly installed. See Fuel System Messages 0 154 for more information.


{ 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 (Check Engine Light) 0 139.


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 keep it in contact with the fill opening until filling is complete.


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Warning (Continued)


. 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.


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 0 436. For towing the vehicle behind another vehicle such as a motor home, see Recreational Vehicle Towing 0 436.


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.


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321


. 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.


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Warning (Continued)


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 0 283.


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. 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.


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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 0 290. 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 0 373. 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.


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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.


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Maintenance when Trailer Towing The vehicle needs service more often when pulling a trailer. See Maintenance Schedule 0 452. 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. If the vehicle is bi-fuel, see the bi-fuel supplement. Do not tow a trailer during break-in. See New Vehicle Break-In 0 275.


{ 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 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.


Caution


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 0 267 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.


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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. 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 pickup models 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.


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Ask your dealer for trailering information or advice. 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.


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1500/2500/3500 Series Pickups – SAE J2807 Compliant


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; 8-speed automatic transmission with Enhanced Towing Package 5.3L V8
6.2L V8
6.2L V8


1500 Series 2WD Crew Cab Standard Box


4.3L V6 (b)


3.23
4.10
3.08
3.42


3.23
3.08
3.42
3.42


3.73
3.23
3.42


3.23


Maximum Trailer


Weight (c)


2 722 kg (6,000 lb) 2 087 kg (4,600 lb) 3 130 kg (6,900 lb) 4 037 kg (8,900 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)


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)


5 035 kg (11,100 lb) 4 264 kg (9,400 lb) 5 443 kg (12,000 lb)


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


2 449 kg (5,400 lb)


4 990 kg (11,000 lb)


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Vehicle


Axle Ratio


5.3L V8
5.3L V8
5.3L V8; 8-speed automatic transmission with Enhanced Towing Package 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; 8-speed automatic transmission with Enhanced Towing Package 5.3L V8
6.2L V8
6.2L V8


3.08
3.42
3.42


3.73
3.23
3.42


3.23
3.08
3.42
3.42


3.73
3.23
3.42


Maximum Trailer


Weight (c)


2 858 kg (6,300 lb) 4 218 kg (9,300 lb) 4 944 kg (10,900 lb)


GCWR (a)


5 443 kg (12,000 lb) 6 804 kg (15,000 lb) 7 575 kg (16,700 lb)


4 990 kg (11,000 lb) 4 218 kg (9,300 lb) 5 398 kg (11,900 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)


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


5 035 kg (11,100 lb) 4 218 kg (9,300 lb) 5 443 kg (12,000 lb)


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


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Vehicle


Axle Ratio


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) 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; 8-speed automatic transmission with Enhanced Towing Package 5.3L V8
6.2L V8


3.23
3.08
3.42


3.42
3.08
3.42


3.42
3.08
3.42
3.42


3.73
3.23


Maximum Trailer


Weight (c)


2 676 kg (5,900 lb) 3 084 kg (6,800 lb) 4 445 kg (9,800 lb)


3 447 kg (7,600 lb) 2 994 kg (6,600 lb) 3 901 kg (8,600 lb)


3 221 kg (7,100 lb) 2 812 kg (6,200 lb) 4 173 kg (9,200 lb) 4 899 kg (10,800 lb)


GCWR (a)


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


5 806 kg (12,800 lb) 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)


4 944 kg (10,900 lb) 4 173 kg (9,200 lb)


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


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Vehicle


Axle Ratio


6.2L V8


1500 Series 4WD Crew Cab Standard Box


4.3L V6 (b) 5.3L V8
5.3L V8
5.3L V8; 8-speed automatic transmission with Enhanced Towing Package 5.3L V8
6.2L V8
6.2L V8


1500 Series 4WD Crew Cab Short Box (b)


4.3L V6
5.3L V8
5.3L V8
5.3L V8; 8-speed automatic transmission with Enhanced Towing Package


3.42


3.42
3.08
3.42
3.42


3.73
3.23
3.42


3.42
3.08
3.42
3.42


Maximum Trailer


Weight (c)


GCWR (a)


5 352 kg (11,800 lb)


8 029 kg (17,700 lb)


3 175 kg (7,000 lb) 2 767 kg (6,100 lb) 4 128 kg (9,100 lb) 4 853 kg (10,700 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)


4 899 kg (10,800 lb) 4 128 kg (9,100 lb) 5 307 kg (11,700 lb)


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


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


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Vehicle


Axle Ratio


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


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


3.73
3.23
3.42


3.42
3.08
3.42


3.73
4.10
4.10


3.73
4.10
4.10


3.73


Maximum Trailer


Weight (c)


4 899 kg (10,800 lb) 4 128 kg (9,100 lb) 5 307 kg (11,700 lb)


GCWR (a)


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)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


4 672 kg (10,300 lb)


7 530 kg (16,600 lb)


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Vehicle


Axle Ratio


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


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


4.10
4.10


3.73
4.10
4.10


3.73
4.10
4.10


3.73
4.10
4.10


3.73
4.10


Maximum Trailer


Weight (c)


6 577 kg (14,500 lb) 6 713 kg (14,800 lb)


GCWR (a)


9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


4 491 kg (9,900 lb) 6 532 kg (14,400 lb) 6 532 kg (14,400 lb)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


4 400 kg (9,700 lb) 6 486 kg (14,300 lb) 6 441 kg (14,200 lb)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb)


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Vehicle


Axle Ratio


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


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) 6.0L V8 (Single Rear Wheels) 6.0L V8 (Dual Rear Wheels)


4.10


3.73
4.10
4.10


3.73
4.10
4.10


3.73
4.10
4.10


3.73
4.10
3.73


Maximum Trailer


Weight (c)


GCWR (a)


6 350 kg (14,000 lb)


9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


4 354 kg (9,600 lb) 6 346 kg (14,100 lb) 6 346 kg (14,100 lb)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


5 897 kg (10,100 lb) 6 577 kg (14,500 lb) 4 445 kg (9,800 lb)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 7 530 kg (16,600 lb)


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Vehicle


Axle Ratio


6.0L V8 (Dual Rear Wheels)


3500 Series 2WD Crew Cab Standard Box


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


3.73
4.10


3.73
4.10


Maximum Trailer


Weight (c)


GCWR (a)


6 486 kg (14,300 lb)


9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


4 400 kg (9,700 lb) 6 441 kg (14,200 lb) 4 218 kg (9,300 lb)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 7 530 kg (16,600 lb)


6 260 kg (13,800 lb)


9 571 kg (21,100 lb)


4 354 kg (9,600 lb) 6 396 kg (14,100 lb)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb)


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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 (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) 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)


3.73
4.10


3.73
4.10


3.73
4.10
4.10


3.73
4.10
3.73
4.10


3.73


Maximum Trailer


Weight (c)


GCWR (a)


4 445 kg (9,800 lb) 6 486 kg (14,300 lb)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb)


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


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 9 571 kg (21,100 lb)


4 264 kg (9,400 lb) 6 305 kg (13,900 lb) 4 082 kg (9,000 lb) 6 123 kg (13,500 lb)


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) 7 530 kg (16,600 lb) 9 571 kg (21,100 lb)


4 173 kg (9,200 lb)


7 530 kg (16,600 lb)


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Axle Ratio


4.10


Maximum Trailer


Weight (c)


GCWR (a)


6 214 kg (13,900 lb)


9 571 kg (21,100 lb)


Vehicle


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


3.73
4.10


7 530 kg (16,600 lb) 9 571 kg (21,100 lb) (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 pickup box delete vehicles, choose an appropriate hitch and load the truck and trailer within the limits of GCWR, GVWR, and RGAWR.


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


Vehicle


Axle Ratio


Maximum Trailer


Weight (c)


GCWR (a)


3500 Series Chassis Cab 2WD/4WD


6.0L V8
6.0L V8


14 107 kg (31,100 lb) 14 107 kg (31,100 lb) (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) Maximum Trailer Weight cannot be provided because total vehicle weight is unknown. (c) Choose an appropriate hitch and load the truck and trailer within the limits of GCWR, GVWR, and RGAWR.


3.73
4.10


(b) (b)


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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 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.


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Vehicle Series


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


Hitch Type


Maximum Tongue


Weight


Weight-Carrying 363 kg (800 lb)


Weight-Distributing Weight-Carrying or Weight-Distributing Weight-Carrying or Weight-Distributing Fifth-Wheel Gooseneck Fifth-Wheel Gooseneck


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


907 kg (2,000 lb)


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 Axle Weight Rating). See “Total Weight on the Vehicle's Tires” later in this section.


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337


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. 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 0 267. 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


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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 tow vehicle and trailer axles. Fifth-wheel and gooseneck hitches may also be used. See “Weight of the Trailer Tongue” under Trailer Towing 0 324 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.


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