Buick 2009 Enclave - Manual (Page 90)

Electronic Range
Select (ERS) Mode
ERS mode allows you to choose the
top-gear limit of the transmission
and the vehicle’s speed while driving
down hill or towing a trailer. The
vehicle has an electronic shift
position indicator within the
instrument panel cluster. When
using the ERS Mode a number will
display next to the L, indicating
the current gear that has been
selected.
To use this feature:
1. Move the shift lever to L (Low).
2. Press the plus/minus button
located on the shift lever, to
increase or decrease the gear
range available.
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 3-42 and DIC Operation and
Displays on page 3-43 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 following.
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