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Should a low tire condition occur on any of the four
active road tire(s), you should stop as soon as possible,
and inflate the low tire(s) that is in a different color on the
graphic display to the vehicle’s recommended cold tire
pressure displayed in theInflate to XXXmessage.
NOTE: When filling warm tires, the tire pressure may
need to be increased up to an additional 4 psi (30 kPa)
above the recommended cold placard pressure in order
to turn the Tire Pressure Monitoring Telltale Light off.
The system will automatically update, the graphic dis-
play of the pressure value(s) will return to its original
color and the Tire Pressure Monitoring Telltale Light will
extinguish once the updated tire pressure(s) have been
received. The vehicle may need to be driven for up to 20
minutes above 15 mph (24 km/h) to receive this infor-
mation.SERVICE TPM SYSTEM Warning
The Tire Pressure Monitoring Telltale Light will flash on
and off for 75 seconds, and remain on solid when a
system fault is detected. The system fault will also sound
a chime. The DID will display a “SERVICE TPM SYS-
TEM” message for a minimum of five seconds. This
message is then followed by a graphic display, with “- -“
in place of the pressure value(s), indicating which Tire
Pressure Monitoring Sensor(s) is not being received.
If the ignition switch is cycled, this sequence will repeat,
providing the system fault still exists. If the system fault
no longer exists, the Tire Pressure Monitoring Telltale
Light will no longer flash, the SERVICE TPM SYSTEM
message will not be present, and a pressure value will be
displayed instead of dashes. A system fault can occur by
any of the following:
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1. Jamming due to electronic devices or driving next tofacilities emitting the same Radio Frequencies as the
TPM sensors.
2. Installing some form of aftermarket window tinting that affects radio wave signals.
3. Lots of snow or ice around the wheels or wheel housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM sensors. NOTE:
•
There is no tire pressure monitoring sensor in the spare
tire. The TPMS will not be able to monitor the tire
pressure. If you install the spare tire in place of a road
tire that has a pressure below the low-pressure warn-
ing limit, upon the next ignition switch cycle, the Tire
Pressure Monitoring Telltale Light will remain ON, a
chime will sound, and the DID will still display a
different color pressure value in the graphic display.
An Inflate to XXX message will still be displayed.
• After driving the vehicle for up to 20 minutes above
15 mph (24 km/h), the Tire Pressure Monitoring
Telltale Light will flash on and off for 75 seconds and
then remain on solid. In addition, the DID will display
a “SERVICE TPM SYSTEM message for a minimum of
five seconds and then display dashes (- -) in place of
the pressure value. For each subsequent ignition
switch cycle, a chime will sound, the Tire Pressure
5
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Page 566 of 723

rear axle systems (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 in-
creased durability does not necessarily increase the vehi-
cle’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 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
564 STARTING AND OPERATING
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Trailer Towing Weights (Maximum Trailer Weight Ratings)
Engine/
Transmission GCWR (Gross
Combined Wt. Rat- ing) Frontal Area
Max. GTW (Gross
Trailer Wt.) Max. Trailer Tongue
Wt. (See Note)
6.4L Automatic 12,600 lbs (5 715 kg)55 sq ft (5.11 sq m) 7,200 lbs (3 265 kg) 720 lbs (327 kg)
Refer to local laws for maximum trailer towing speeds.
NOTE:
• The trailer tongue weight must be considered as part
of the combined weight of occupants and cargo, and
should never exceed the weight referenced on the Tire
and Loading Information placard. Refer to “Tire–
Safety Information” in “Starting and Operating” for
further information.
• The manufacturer does not recommend using the run
flat feature while driving a vehicle loaded at full
capacity or towing a trailer.
Trailer Hitch Receiver Cover Removal
(SRT Models) — If Equipped
Your vehicle may be equipped with a trailer hitch re-
ceiver cover, this must be removed to access the trailer
hitch receiver (if equipped). This hitch receiver cover is
located at the bottom center of the rear fascia.
1. Turn the two locking retainers located at the bottom of the hitch receiver cover a 1/4 turn counterclockwise.
570 STARTING AND OPERATING
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CAUTION!
If the trailer weighs more than 1,000 lbs (453 kg)
loaded, it should have its own brakes and they
should be of adequate capacity. Failure to do this
could lead to accelerated brake lining wear, higher
brake pedal effort, and longer stopping distances.
• Do not interconnect the hydraulic brake system or
vacuum system of your vehicle with that of the trailer.
This could cause inadequate braking and possible
personal injury.
• An electronically actuated trailer brake controller is
required when towing a trailer with electronically
actuated brakes. When towing a trailer equipped with
a hydraulic surge actuated brake system, an electronic
brake controller is not required. •
Trailer brakes are recommended for trailers over
1,000 lbs (453 kg) and required for trailers in excess of
1,653 lbs (749 kg).
Towing Requirements — Tires
• Proper tire inflation pressures are essential to the safe
and satisfactory operation of your vehicle. Refer to
“Tires – General Information” in “Starting And Oper-
ating” for proper tire inflation procedures.
• Check the trailer tires for proper tire inflation pres-
sures before trailer usage.
• Check for signs of tire wear or visible tire damage
before towing a trailer. Refer to “Tires – General
Information” in “Starting And Operating” for proper
inspection procedure.
• When replacing tires, refer to “Tires – General Infor-
mation” in “Starting And Operating” for proper tire
5
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WHAT TO DO IN EMERGENCIES
CONTENTS
HAZARD WARNING FLASHERS ...........582
IF YOUR ENGINE OVERHEATS ............582
WHEEL AND TIRE TORQUE
SPECIFICATIONS ..................... .583
▫ Torque Specifications ...................584
JACKING AND TIRE CHANGING ..........585
▫ Run Flat Tires ....................... .586
▫ Jack Location ....................... .586
▫ Spare Tire Stowage ....................587
▫ Preparations For Jacking ................587 ▫
Jacking Instructions ...................588
▫ Road Tire Installation ..................595
JUMP-STARTING ..................... .596
▫ Preparations For Jump-Start ..............596
▫ Jump-Starting Procedure ................598
FREEING A STUCK VEHICLE .............600
MANUAL PARK RELEASE ................602
TOWING A DISABLED VEHICLE ...........606
6
Page 588 of 723
WARNING!(Continued)
lift the vehicle for service purposes. The vehicle
should be jacked on a firm level surface only.
Avoid ice or slippery areas.
Run Flat Tires
This vehicle is equipped with “run flat” tires. Run flat
tires allow the vehicle to be driven approximately 50
miles (80km) at 55 mph (88km/h). Tire service should be
obtained to avoid prolonged run flat feature usage.
WARNING!
Do not exceed 50 mph (80 km/h) if the “Tire Pressure
Monitoring Telltale Light” is illuminated. Vehicle
handling and braking may be reduced. You could
have a collision and be severely or fatally injured.
Jack Location
The scissor-type jack and tire changing tools are located
in rear cargo area, below the load floor.
Jack Storage Location
586 WHAT TO DO IN EMERGENCIES
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WARNING!(Continued)
•Do not get under the vehicle when it is on a jack. If
you need to get under a raised vehicle, take it to a
service center where it can be raised on a lift.
• Only use the jack in the positions indicated and for
lifting this vehicle during a tire change.
• If working on or near a roadway, be extremely
careful of motor traffic.
• To assure that spare tires, flat or inflated, are
securely stowed, spares must be stowed with the
valve stem facing the ground.
CAUTION!
Do not attempt to raise the vehicle by jacking on
locations other than those indicated in the Jacking
Instructions for this vehicle.
Jack Warning Label
6
WHAT TO DO IN EMERGENCIES 589