
172STARTING AND OPERATING
VEHICLE LOADING
GROSS VEHICLE WEIGHT RATING
(GVWR)
The GVWR is the total permissible weight of your vehicle
including driver, passengers, vehicle, options and cargo.
The label also specifies maximum capacities of front and
rear Gross Axle Weight Rating (GAWR). Total load must be
limited so GVWR and front and rear GAWR are not
exceeded.
PAYLOAD
The payload of a vehicle is defined as the allowable load
weight a truck can carry, including the weight of the driver,
all passengers, options and cargo.
GROSS AXLE WEIGHT RATING (GAWR)
The GAWR is the maximum permissible load on the front
and rear axles. The load must be distributed in the cargo
area so that the GAWR of each axle is not exceeded.
Each axle GAWR is determined by the components in the
system with the lowest load carrying capacity (axle,
springs, tires or wheels). Heavier axles, or suspension
components sometimes specified by purchasers for
increased durability, do not necessarily increase the
vehicle's GVWR.
TIRE SIZE
The tire size on the Vehicle Certification Label represents
the actual tire size on your vehicle. Replacement tires
must be equal to the load capacity of this tire size.
RIM SIZE
This is the rim size that is appropriate for the tire size
listed.
INFLATION PRESSURE
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full Gross Axle Weight Rating
(GAWR).
CURB WEIGHT
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
LOADING
The actual total weight and the weight of the front and rear
of your vehicle at the ground can best be determined by
weighing it when it is loaded and ready for operation. The entire vehicle should first be weighed on a commercial
scale to ensure that the Gross Vehicle Weight Rating
(GVWR) has not been exceeded. The weight on the front
and rear of the vehicle should then be determined
separately to be sure that the load is properly distributed
over the front and rear axle. Weighing the vehicle may
show that the Gross Axle Weight Rating (GAWR) of either
the front or rear axles has been exceeded but the total
load is within the specified GVWR. If so, weight must be
shifted from front to rear or rear to front as appropriate
until the specified weight limitations are met. Store the
heavier items down low and be sure that the weight is
distributed equally. Stow all loose items securely before
driving.
Improper weight distributions can have an adverse effect
on the way your vehicle steers and handles and the way
the brakes operate.
WARNING!
Do not load your vehicle any heavier than the GVWR or
the maximum front and rear GAWR. If you do, parts on
your vehicle can break, or it can change the way your
vehicle handles. This could cause you to lose control.
Overloading can shorten the life of your vehicle.
23_DT_OM_EN_USC_t.book Page 172

STARTING AND OPERATING173
TRAILER TOWING
In this section you will find safety tips and information on
limits to the type of towing you can reasonably do with your
vehicle. Before towing a trailer, carefully review this
information to tow your load as efficiently and safely as
possible.
To maintain the New Vehicle Limited Warranty coverage,
follow the requirements and recommendations in this
manual concerning vehicles used for trailer towing.
COMMON TOWING DEFINITIONS
The following trailer towing related definitions will assist
you in understanding the following information:
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total allowable weight of your vehicle.
This includes driver, passengers, cargo and tongue
weight. The total load must be limited so that you do not
exceed the GVWR
Úpage 172.
Gross Trailer Weight (GTW)
The GTW is the weight of the trailer plus the weight of all
cargo, consumables and equipment (permanent or
temporary) loaded in or on the trailer in its “loaded and
ready for operation” condition.
The recommended way to measure GTW is to put your fully
loaded trailer on a vehicle scale. The entire weight of the
trailer must be supported by the scale.
Gross Combination Weight Rating (GCWR)
The GCWR is the total allowable weight of your vehicle and
trailer when weighed in combination.
Gross Axle Weight Rating (GAWR)
The GAWR is the maximum capacity of the front and rear
axles. Distribute the load over the front and rear axles
evenly. Make sure that you do not exceed either front or
rear GAWR
Úpage 172.
Tongue Weight (TW)
The TW is the downward force exerted on the hitch ball by
the trailer. You must consider this as part of the load on
your vehicle.
Trailer Frontal Area
The frontal area is the maximum height multiplied by the
maximum width of the front of a trailer.
Trailer Sway Control (TSC)
The TSC can be a mechanical telescoping link that can be
installed between the hitch receiver and the trailer tongue
that typically provides adjustable friction associated with
the telescoping motion to dampen any unwanted trailer
swaying motions while traveling.
The electronic TSC (If equipped) recognizes a swaying
trailer and automatically applies individual wheel brakes
and/or reduces engine power to attempt to eliminate the
trailer sway.
Weight-Carrying Hitch
A weight-carrying hitch supports the trailer tongue weight,
just as if it were luggage located at a hitch ball or some
other connecting point of the vehicle. These kinds of
hitches are commonly used to tow small and medium
sized trailers.
WARNING!
If the gross trailer weight is 5,000 lb (2,267 kg) or
more, it is recommended to use a weight-distributing
hitch to ensure stable handling of your vehicle. If you
use a standard weight-carrying hitch, you could lose
control of your vehicle and cause a collision.
WARNING!
It is important that you do not exceed the maximum
front or rear GAWR. A dangerous driving condition can
result if either rating is exceeded. You could lose control
of the vehicle and have a collision.
4
23_DT_OM_EN_USC_t.book Page 173

174STARTING AND OPERATING
Weight-Distributing Hitch
A weight-distributing system works by applying leverage
through spring (load) bars. They are typically used for
heavier loads to distribute trailer tongue weight to the tow
vehicle's front axle and the trailer axle(s). When used in
accordance with the manufacturer's directions, it provides
for a more level ride, offering more consistent steering and
brake control, thereby enhancing towing safety. The
addition of a friction/hydraulic sway control also dampens
sway caused by traffic and crosswinds and contributes
positively to tow vehicle and trailer stability. Trailer Sway
Control and a weight-distributing (load equalizing) hitch
are recommended for heavier Tongue Weights (TW) and
may be required depending on vehicle and trailer
configuration/loading to comply with GAWR requirements.
Without Weight-Distributing Hitch (Incorrect) With Weight-Distributing Hitch (Correct)
Improper Adjustment Of Weight-Distributing Hitch (Incorrect)
WARNING!
An improperly adjusted weight-distributing hitch
system may reduce handling, stability and braking
performance and could result in a collision.
Weight-distributing systems may not be compatible
with surge brake couplers. Consult with your hitch
and trailer manufacturer or a reputable Recreational
Vehicle dealer for additional information.
23_DT_OM_EN_USC_t.book Page 174

STARTING AND OPERATING175
RECOMMENDED DISTRIBUTION HITCH
ADJUSTMENT
Towing With Air Suspension — If Equipped
1. Verify that the vehicle is at the normal ride height.
NOTE:The vehicle must remain in the engine run position with all
doors closed while attaching a trailer for proper leveling of
the air suspension system.
2. Position the truck to be ready to connect to the trailer
(do not connect the trailer).
3. Enable tire jack mode through the instrument cluster or touchscreen radio settings. Tire jack mode will be
canceled and the procedure must be restarted if the
vehicle is driven at speeds above 5 mph (8 km/h).
4. Measure the height from the top of the front wheel opening on the fender to ground; this is height H1.
Measuring Height (H)
5. Attach the trailer to the vehicle without the weight-distributing bars connected.
6. Measure the height from the top of the front wheel opening on the fender to the ground; this is height H2.
7. Install and adjust the tension in the weight-distributing bars per the manufacturer’s
recommendations so that the height of the front
fender is approximately (H2-H1)/3+H1
(about 1/3 the difference between H2 and H1 above
normal ride height [H1]). 8. Use the instrument cluster or touchscreen radio
settings and switch off tire jack mode. Make sure the
truck returns to normal ride height. Perform a visual
inspection of the trailer and weight-distributing hitch
to confirm the manufacturer’s recommendations
have been met.
9. The truck can now be driven.
NOTE:For all towing conditions, we recommend towing with
Tow/Haul mode engaged.
Measurement Example Example Height (mm)
H1 925
H2 946
H2-H1 21
(H2-H1)/3 7
(H2-H1)/3 + H1 932
4
23_DT_OM_EN_USC_t.book Page 175

176STARTING AND OPERATING
TRAILER HITCH TYPE AND MAXIMUM TRAILER WEIGHT
The following chart provides the maximum trailer weight a given factory equipped trailer hitch type can tow and should be used to assist you in selecting the correct trailer hitch for your
intended towing condition.
All trailer hitches should be professionally installed on
your vehicle.
Class III Bumper Hitch Access
Remove the cap with a trim stick or screwdriver to access
the Class III hitch attachment.
NOTE:Be careful not to scratch the bumper step pad.
Class III Bumper Hitch Access
TRAILER TOWING WEIGHTS
(M
AXIMUM TRAILER WEIGHT RATINGS)
NOTE:For trailer towing information (maximum trailer weight
ratings) refer to the following website addresses:
ramtrucks.com/towing/towing-guide
ramtruck.ca (Canada)
rambodybuilder.com
TRAILER AND TONGUE WEIGHT
Weight Distribution
Trailer Hitch Type and Maximum Trailer Weight
Hitch Type Max. Trailer Weight / Max. Tongue Weight
Class III Bumper Hitch - 1500 Model 5,000 lb (2,267 kg) / 500 lb (226 kg)
Class IV - 1500 Model 12,750 lb (5,783 kg) / 1,275 lb (578 kg)
Refer to the “Trailer Towing Weights (Maximum Trailer Weight Ratings)” for the Maximum Gross Trailer Weight (GTW) towable for your given drivetrain.
23_DT_OM_EN_USC_t.book Page 176

STARTING AND OPERATING177
Consider the following items when computing the weight
on the rear axle of the vehicle:
The tongue weight of the trailer.
The weight of any other type of cargo or equipment put
in or on your vehicle.
The weight of the driver and all passengers.
NOTE:Remember that everything put into or on the trailer adds
to the load on your vehicle. Also, additional
factory-installed options or dealer-installed options must
be considered as part of the total load on your vehicle.
Refer to the Tire And Loading Information Placard for the
maximum combined weight of occupants and cargo for
your vehicle.
TRAILER REVERSE STEERING
C
ONTROL — IF EQUIPPED
Feature Overview
Trailer Reverse Steering Control (TRSC) is a feature that
will assist the driver when backing up a trailer. By turning
the knob located on the center stack, you can more
accurately control the direction the trailer will go. The driver controls the accelerator and the brake while
steering with the use of the Trailer Reverse Steering
Control knob. The trailer is steered according to the
direction the knob is turned.
This feature will also allow the driver to back up a vehicle
and trailer in a straight line when the knob is rested in its
center position.
Minimal setup is required to use this feature.
Set Up:
To use the system, hitch your trailer to the truck and
ensure all electrical wiring is connected
Úpage 182.
The system will automatically calibrate an attached trailer
during normal forward driving with no additional action
needed from the driver. If the vehicle has not had enough
time to automatically calibrate after connecting a trailer,
you will see a “Calibrate Trailer” message in the
instrument cluster when pressing the TRSC button to
activate the system. If this is the case, perform the
following maneuver to calibrate the trailer:
Drive forward at least 100 ft (30 m), perform a 90 degree
turn and return to a straight position for at least another
100 ft (30 m). Perform another 90 degree turn, followed
by another straight drive of at least 100 ft (30 m). Check
that the system has calibrated by pushing the TRSC
button.
NOTE:The 90 degree turns could be in either the left or right
direction.
Trailer Reverse Steering Control Calibration
1 — Straight 100 ft (30 m) 2 — Intersection turn with radius 50-65 ft (15-20 m) in
either direction
3 — Straight 100 ft (30 m)4 — Intersection turn with radius 50-65 ft (15-20 m) in
either direction
5 — Straight 100 ft (30 m)6 — Straight 100 ft (30 m), making sure to align vehicle/trailer to path center line
7 — Feature is active, turn knob left or right to back the
trailer up
4
23_DT_OM_EN_USC_t.book Page 177

STARTING AND OPERATING179
(Continued)
Some trailers (such as boat trailers) will need to
recalibrate while loaded and unloaded.
NOTE:
The system may not detect a trailer in low light condi -
tions. In sunny conditions, the performance may be
degraded as shadows pass over the trailer.
The driver is always responsible for safe operation of
truck and trailer.
The driver is always in control of the truck as well as the
trailer and is responsible for controlling the throttle and
brakes.
The system may not function when the camera lens is
blocked, blurred (covered with water, snow, ice, dirt,
etc) and will not work unless the tailgate is upright and
fully latched.
TOWING REQUIREMENTS
To promote proper break-in of your new vehicle drivetrain
components, the following guidelines are recommended. Perform the maintenance listed in the Scheduled
Servicing section for the proper maintenance intervals
Úpage 333. When towing a trailer, never exceed the
GAWR or GCWR ratings.
Towing Requirements — Tires
Do not attempt to tow a trailer while using a compact
spare tire.
Do not drive more than 50 mph (80 km/h) when towing
while using a full size spare tire.
Proper tire inflation pressures are essential to the safe
and satisfactory operation of your vehicle.
Check the trailer tires for proper tire inflation pressures
before trailer usage.
Check for signs of tire wear or visible tire damage
before towing a trailer.
Replacing tires with a higher load carrying capacity will
not increase the vehicle's GVWR and GAWR limits.
For further information
Úpage 370.
CAUTION!
Do not tow a trailer at all during the first 500 miles
(805 km) the new vehicle is driven. The engine, axle
or other parts could be damaged.
Then, during the first 500 miles (805 km) that a
trailer is towed, do not drive over 50 mph (80 km/h)
and do not make starts at full throttle. This helps the
engine and other parts of the vehicle wear in at the
heavier loads.
WARNING!
Make certain that the load is secured in the trailer
and will not shift during travel. When trailering cargo
that is not fully secured, dynamic load shifts can
occur that may be difficult for the driver to control.
You could lose control of your vehicle and have a
collision.
When hauling cargo or towing a trailer, do not over -
load your vehicle or trailer. Overloading can cause a
loss of control, poor performance or damage to
brakes, axle, engine, transmission, steering, suspen -
sion, chassis structure or tires.
Safety chains must always be used between your
vehicle and trailer. Always connect the chains to the
hook retainers of the vehicle hitch. Cross the chains
under the trailer tongue and allow enough slack for
turning corners.
Vehicles with trailers should not be parked on a
grade. When parking, apply the parking brake on the
tow vehicle. Put the tow vehicle transmission in
PARK. For four-wheel drive vehicles, make sure the
transfer case is not in NEUTRAL. Always, block or
"chock" the trailer wheels.
GCWR must not be exceeded.
Total weight must be distributed between the tow
vehicle and the trailer such that the following four
ratings are not exceeded :
GVWR
GTW
GAWR
Tongue weight rating for the trailer hitch utilized
WARNING!
4
23_DT_OM_EN_USC_t.book Page 179

184STARTING AND OPERATING
TOWING TIPS
Before towing, practice turning, stopping, and backing up
the trailer in an area located away from heavy traffic.
Automatic Transmission
The DRIVE range can be selected when towing. The
transmission controls include a drive strategy to avoid
frequent shifting when towing. However, if frequent
shifting does occur while in DRIVE, select TOW/HAUL
mode or select a lower gear range (using the Electronic
Range Select (ERS) shift control).
NOTE:Using TOW/HAUL mode or selecting a lower gear range
(using the ERS shift control) while operating the vehicle
under heavy loading conditions will improve performance
and extend transmission life by reducing excessive
shifting and heat build up. This action will also provide
better engine braking.
Tow/Haul Mode
To reduce potential for automatic transmission
overheating, activate TOW/HAUL mode when driving in
hilly areas, or select a lower gear range (using the (ERS)
shift control) on more severe grades.
Cruise Control — If Equipped
Do not use on hilly terrain or with heavy loads.
When using the Cruise Control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
Use Cruise Control in flat terrain and with light loads to
maximize fuel efficiency.
Air Suspension System
To aid in attaching/detaching the trailer from the vehicle,
the air suspension system can be used Úpage 134.
Selecting Tow/Haul or connecting a trailer with an
Integrated Trailer Brake Module (ITBM) will disable
Automatic Aero mode to avoid height changes while
towing and shifting loads or tongue weights.
NOTE:The vehicle must remain in the engine running position
while attaching a trailer for proper leveling of the air
suspension system.
SNOWPLOW
Snowplow Prep Packages are available as a factory
installed option. These packages include components
necessary to equip your vehicle with a snowplow.
NOTE:Before installation of a snowplow it is highly recom -
mended that the owner/installer obtain and follow the
recommendations contained within the current Body
Builder’s Guide. See an authorized dealer, installer or
snowplow manufacturer for this information. There are
unique electrical systems that must be connected to
properly ensure operator safety and prevent overloading
vehicle systems.
WARNING!
Attaching a snowplow to this vehicle could adversely
affect performance of the airbag system in a collision.
Do not expect that the airbag will perform as described
earlier in this manual.
CAUTION!
The “Lamp Out” indicator could illuminate if exterior
lamps are not properly installed.
23_DT_OM_EN_USC_t.book Page 184