Chevrolet avalanche 2002 用户手册

Tow/haul is a feature that assists when pulling a heavy
trailer or a large or heavy load. The purpose of the
tow/haul mode is to:
D Reduce the frequency and improve the predictability

of transmission shifts when pulling a heavy trailer or
a large or heavy load.

D Provide the same solid shift feel when pulling a

heavy trailer or a large or heavy load as when the
vehicle is unloaded.

D Improve control of vehicle speed while requiring less

throttle pedal activity when pulling a heavy trailer or
a large or heavy load.

Your vehicle is equipped with a button at the end of the
shift lever which when pressed enables tow/haul. When
the button is pressed, a light on the instrument panel will
illuminate to indicate that tow/haul has been selected.
Tow/haul may be turned off by pressing the button
again, at which time the indicator light on the instrument
panel will turn off. The vehicle will automatically turn
off tow/haul every time it is started.

Tow/haul is designed to be most effective when 
the vehicle and trailer combined weight is at least 
75% of the vehicle’s Gross Combined Weight Rating
(GCWR). See “Weight of the Trailer” later in this
section. Tow/haul is most useful under the following
driving conditions:
D When pulling a heavy trailer or a large or heavy load

through rolling terrain.

D When pulling a heavy trailer or a large or heavy load

in stop and go traffic.

D When pulling a heavy trailer or a large or heavy load

in busy parking lots where improved low speed
control of the vehicle is desired.

Operating the vehicle in tow/haul when lightly loaded or
with no trailer at all will not cause damage. However,
there is no benefit to the selection of tow/haul when the
vehicle is unloaded. Such a selection when unloaded
may result in unpleasant engine and transmission
driving characteristics and reduced fuel economy.
Tow/haul is recommended only when pulling a heavy
trailer or a large or heavy load.