STARTING AND OPERATING 179
WARNING!
Some trailers (such as boat trailers) will need to
recalibrate while loaded and unloaded.
Perform the maintenance listed in the Scheduled
Servicing section for the proper maintenance intervals
Ú page 333. When towing a trailer, never exceed the
GAWR or GCWR ratings.
Total weight must be distributed between the tow
vehicle and the trailer such that the following four
ratings are not exceeded:
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.
WARNING!
GVWR
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.
The driver is always responsible for safe operation of
truck and trailer.
GTW
GAWR
The driver is always in control of the truck as well as the
trailer and is responsible for controlling thethrottle and
brakes.
Tongue weight rating for the trailer hitch utilized
4
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 — Tires
Do not attempt to tow a trailer while using a compact
spare tire.
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.
Donotdrive more than 50 mph (80 km/h) when towing
while using a full size spare tire.
TOWING REQUIREMENTS
To promote proper break-in of your new vehicle drivetrain
components, the following guidelines are recommended.
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.
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.
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.
Check for signs of tire wear or visible tire damage
before towing a trailer.
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.
Replacing tires with a higher load carrying capacity will
not increase the vehicle's GVWR and GAWR limits.
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.
For further information Ú page 370.
GCWR must not be exceeded.
(Continued)