Manual Mode - GMC ACADIA 2017 Owner's Manual

economy than D (Drive). You can
use it on very steep hills, or in deep
snow or mud. See Manual
Mode 0 235.
Operating Modes : The
transmission may operate in a lower
gear than normal to improve vehicle
performance. The engine speed
may be higher and there may be an
increase in noise during the
following conditions:
When climbing a grade.
When driving downhill.
When driving in hot
temperatures, or at high altitude.

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 downhill or towing a trailer.
The vehicle has an electronic shift
position indicator within the
instrument cluster. When using the
ERS mode a number will display
next to the L, indicating the highest
gear available for the range
selected.
To use this feature:
1. Move the shift lever to L (Low).
2. Press + (Plus) or (Minus) 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
Driving and Operating
next to the L in the DIC. See Driver
Information Center (DIC) (Base and
Midlevel) 0 141 or Driver Information
Center (DIC) (Uplevel) 0 144. 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).
If the transmission is in 6 (Sixth)
gear when L (Low) is selected, a
downshift to 4 (Fourth) will be
commanded. If in 5 (Fifth) through
2 (Second) a single downshift will
occur.
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