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exceed the GVWR. Refer to “Vehicle Loading/Vehicle
Certification Label” in “Starting and Operating” for
further information.
Gross Trailer Weight (GTW)
The GTW is the weight of the trailer plus the weight of all
cargo, consumables and equipment (permanent or tem-
porary) loaded in or on the trailer in itsloaded 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 permissible 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 the front
or rear GAWR. Refer to “Vehicle Loading/Vehicle Certi-
fication Label” in “Starting and Operating” for further
information.
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.
5
STARTING AND OPERATING 503
Page 512 of 656

Towing Requirements — Tires
•Do not attempt to tow a trailer while using a compact
spare tire.
• 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 the
proper inspection procedure.
•
When replacing tires, refer to “Tires – General Informa-
tion” in “Starting and Operating” for proper tire replace-
ment procedures. Replacing tires with a higher load
carrying capacity will not increase the vehicle’s GVWR
and GAWR limits.
Towing Requirements — Trailer Brakes
• 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 (450 kg) and required for trailers in excess of
2,000 lbs (907 kg).
510 STARTING AND OPERATING
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CAUTION!
If the trailer weighs more than 1,000 lbs (450 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.
WARNING!
•Do not connect trailer brakes to your vehicle’s hydrau-
lic brake lines. It can overload your brake system and
cause it to fail. You might not have brakes when you
need them and could have a collision.
•Towing any trailer will increase your stopping dis-
tance. When towing, you should allow for additional
space between your vehicle and the vehicle in front of
you. Failure to do so could result in a collision.
Towing Requirements — Trailer Lights And Wiring
Whenever you pull a trailer, regardless of the trailer size,
stop lights and turn signals on the trailer are required for
motoring safety.
The Trailer Tow Package may include a four-pin and
seven-pin wiring harness. Use a factory approved trailer
harness and connector.
NOTE:Do not cut or splice wiring into the vehicle’s
wiring harness.
The electrical connections are all complete to the vehicle,
but you must mate the harness to a trailer connector.
Refer to the following illustrations.
5
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Page 651 of 656

Sunglasses Storage........................273
Sun Roof ...............................283
Sun Visor Extension .......................123
Supplemental Restraint System - Airbag ..........61
Sway Control, Trailer .......................451
System, Remote Starting .....................28
Tachometer ............................. .308
Telescoping Steering Column .................249
Temperature Control, Automatic (ATC) ..........401
Temperature Gauge, Engine Coolant ............310
Text Messaging .......................... .162
Tilt Steering Column .......................249
Time Delay, Headlight ..................... .237
Tire and Loading Information Placard ...........464
TIREFIT ............................... .522
Tire Markings ............................458
Tire Rotation ............................ .568
Tires...................................111 Aging (Life of Tires)
.....................478
Air Pressure .......................... .468
Chains ...............................481
Changing ............................ .532
Compact Spare ........................ .475
General Information .....................468
High Speed .......................... .471
Inflation Pressures .......................470
Jacking ...............................532
Life of Tires .......................... .478
Load Capacity ........................ .464
Pressure Monitor System (TPMS) ............483
Pressure Warning Light ...................308
Quality Grading ........................629
Radial ...............................472
Replacement .......................... .479
Rotation ............................. .482
Safety ...............................458
Sizes ............................... .459
10
INDEX 649