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Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-13688912) -
2020 - CRC - 6/11/19
Driving and Operating 169
To set ACC:
1. Press
].
2. Get up to the desired speed.
3. Press and release SET–.
4. Remove your foot from the
accelerator.
After ACC is set, it may immediately
apply the brakes if a vehicle ahead
is closer than the selected
following gap.
The ACC indicator displays on the
instrument cluster. When ACC is
active, the indicator turns green.
Be mindful of speed limits,
surrounding traffic speeds, and
weather conditions when selecting
the set speed.
Resuming a Set Speed
If the ACC is set at a desired speed
and then the brakes are applied,
ACC is disengaged without erasing
the set speed from memory.
To begin using ACC again, press
+RES. The vehicle returns to the
previous set speed.
Increasing Speed While ACC is at
a Set Speed
If ACC is already activated, do one
of the following:
.
Use the accelerator to get to the
higher speed. Press SET–.
Release the control and the
accelerator pedal. The vehicle
will now cruise at the higher
speed.
When the accelerator pedal is
pressed, ACC will not brake
because it is overridden.
A warning message will appear
on the Driver Information Center
(DIC). See Vehicle Messages
0 112.
.
Press and hold +RES until the
desired set speed appears on
the display, then release it.
.
To increase vehicle speed in
small increments, briefly press
+RES. For each press the
vehicle goes 5 km/h (1 mph)
faster.
When it is determined that there is
no vehicle ahead or the vehicle is
beyond the selected following gap,
then the vehicle speed will increase
to the set speed.
The speedometer reading can be
displayed in either English or metric
units. See Instrument Cluster 0 96.
The increment value used depends
on the units displayed.
Reducing Speed While ACC is at a
Set Speed
If ACC is already activated, do one
of the following:
.
Use the brake to get to the
desired lower speed. Release
the brake and press SET−. The
vehicle will now cruise at the
lower speed.
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