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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. 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.
NOTE: The GCWR rating includes a 150 lbs (68 kg)
allowance for the presence of a driver.
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. Refer to “Vehicle Loading/Vehicle Certifica-
tion Label” in “Starting and Operating” for further
information.
308 STARTING AND OPERATING
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WARNING! (Continued)
3. GAWR
4. Trailer tongue weight rating for the trailer hitch
utilized (This requirement may limit the ability to
always achieve 10% of trailer tongue weight as a
percentage of total trailer weight).
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 informa-
tion on tread wear indicators and for proper inspection
procedure.
•When replacing tires, refer to “Tires – General Infor-
mation” in “Starting and Operating” for information
on replacement tires and for proper tire replacement
procedures. Replacing tires with a higher load carry-
ing capacity will not increase the vehicle’s GVWR and
GAWR limits.
Towing Requirements – Trailer Brakes
•
Donot 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.
5
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•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).
CAUTION!
If the trailer weighs more than 1,000 lbs (450 kg)
loaded, it should have its own brakes with adequate
braking 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
hydraulic 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 an
accident.
•Towing any trailer will increase your stopping
distance. When towing, you should allow for ad-
ditional space between your vehicle and the ve-
hicle in front of you. Failure to do so could result
in an accident.
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.
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Page 441 of 444

Life of Tires.......................... 282
Load Capacity ..................... 272,273
Pressure Monitor System (TPMS) ........... 285
Pressure Warning Light .................. 155
Quality Grading ....................... 421
Radial .............................. 279
Replacement ......................... 282
Rotation ............................ 284
Safety ........................... 266,276
Sizes ............................... 268
Snow Tires ........................... 284
Spare Tire ........................... 323
Spinning ............................ 280
Tread Wear Indicators ................... 281
Tongue Weight/Trailer Weight .............. 312
Towing ............................... 307
Disabled Vehicle ....................... 335
Guide .............................. 311
Recreational .......................... 318 Weight
.............................. 311
Traction .............................. 250
Trailer Towing .......................... 307
Cooling System Tips .................... 318
Hitches ............................. 310
Minimum Requirements ................. 313
Trailer and Tongue Weight ............... 312
Trailer Towing Guide ..................... 311
Trailer Weight .......................... 311
Transaxle Additives ............................ 370
Automatic .................... 12,238,241,368
Autostick ............................ 248
Filter ............................... 370
Maintenance ......................... 368
Operation ........................... 241
Overdrive ........................... 246
Selection of Lubricant ................... 394
Transmission ..................... See Transaxle
440 INDEX