GMC 15919282 Automobile User Manual


 
When you shift from D (Drive) to
L (Low), the transmission will shift to
a pre-determined lower gear range.
The highest gear available for
this pre-determined range is
displayed next to the L in the DIC.
See Driver Information Center
(DIC) on page 3-47 and DIC
Operation and Displays (With DIC
Buttons) on page 3-47 or DIC
Operation and Displays (Without
DIC Buttons) on page 3-53 for more
information. The number displayed
in the DIC is the highest gear
that the transmission will be allowed
to operate in. This means that all
gears below that number are
available. For example, when
4 (Fourth) is shown next to the L,
1 (First) through 4 (Fourth) gears
are automatically shifted by the
vehicle. the transmission will
not shift into 5 (Fifth) until the
+ (Plus) button is used or you shift
back into D (Drive).
While in L (Low), the transmission
will prevent shifting to a lower
gear range if the engine speed is
too high. You have a brief period of
time to slow the vehicle. If vehicle
speed is not reduced within the time
allowed, the lower gear range
shift will not be completed. You must
further slow the vehicle, then
press the (Minus) button to the
desired lower gear range.
Automatic Engine Grade braking is
not available when the ERS is
active. It is available in D (Drive) for
both normal and Tow/Haul mode.
While using the ERS, cruise control
and the tow/haul mode can be
used. See Tow/Haul Mode on
page 2-26 for more information.
Tow/Haul Mode
_
(Tow/Haul): The vehicle may
have a Tow/Haul mode.
The button is located on the
instrument panel under the climate
controls.
Push the button to activate the
system. Push it again to deactivate
the system. You can use this
feature to assist when towing or
hauling a heavy load.
When Tow/Haul is activated the
Tow/Haul symbol will come on the
instrument panel cluster. See
“Tow/Haul Mode” under Towing a
Trailer on page 4-24 for more
information.
2-26 Features and Controls