Hummer H3T Automobile User Manual


 
Do not tow a trailer at all during
the first 500 miles (800 km) the
new vehicle is driven. The
engine, axle or other parts could
be damaged.
Then, during the first 500 miles
(800 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.
Vehicles with an automatic
transmissions can tow in
D (Drive). Shift the transmission
to a lower gear if the
transmission shifts too often
under heavy loads and/or hilly
conditions. For vehicles with
a manual transmission, it is better
not to use the highest gear.
This vehicle has a Hill Start
Assist feature, which may
be useful when the vehicle is
stopped on a grade. See Braking
on page 4-3 for more information.
Three important considerations have
to do with weight:
The weight of the trailer
The weight of the trailer tongue
The weight on the vehicle’s tires
Weight of the Trailer
How heavy can a trailer safely be?
It depends on how the rig is
used. For example, speed, altitude,
road grades, outside temperature
and how much the vehicle is used to
pull a trailer are all important. It
can depend on any special
equipment on the vehicle, and the
amount of tongue weight the vehicle
can carry. See “Weight of the
Trailer Tongue” later in this section
for more information.
Driving Your Vehicle 4-43