![GMC Sierra Denali Classic 2007 Owner'S Manual Download Page 306](http://html.mh-extra.com/html/gmc/sierra-denali-classic-2007/sierra-denali-classic-2007_owners-manual_2235554306.webp)
Your vehicle may be equipped with a switch on
the shift lever which when pressed enables
Tow/Haul. When the switch 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 switch again, at
which time the indicator light on the instrument
panel cluster 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 percent 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:
•
When pulling a heavy trailer or a large or
heavy load through rolling terrain.
•
When pulling a heavy trailer or a large or
heavy load in stop and go traffic.
•
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.
Weight of the Trailer
How heavy can a trailer safely be?
It depends on how you plan to use your rig.
For example, speed, altitude, road grades, outside
temperature and how much your vehicle is used
to pull a trailer are all important. It can also depend
on any special equipment that you have on your
vehicle, and the amount of tongue weight the
vehicle can carry. See “Weight of the Trailer
Tongue” later in this section for more information.
306
Summary of Contents for Sierra Denali Classic 2007
Page 6: ...These are some examples of symbols that may be found on the vehicle 6 ...
Page 82: ... NOTES 82 ...
Page 141: ... NOTES 141 ...
Page 142: ...Instrument Panel Overview 142 ...
Page 320: ... NOTES 320 ...
Page 440: ...440 ...
Page 463: ...Engine Drive Belt Routing A Air Conditioning Compressor 463 ...