Manual mode, Manual mode -27 – GMC 2011 Acadia User Manual

Page 299

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GMC Acadia/Acadia Denali Owner Manual - 2011

Driving and Operating

9-27

This is normal and is due to
the torque converter designed
to improve fuel economy and
performance. Use the brake to
hold the vehicle on a hill. Do not
use the accelerator pedal.

L (Low): This position gives
you access to gear ranges. This
provides more engine braking but
lower fuel economy than D (Drive).
You can use it on very steep hills,
or in deep snow or mud.

Manual Mode

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) (With DIC
Buttons) on page 5‑25
or Driver
Information Center (DIC) (Without
DIC Buttons) on page 5‑30
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.

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