Chevrolet 2010 Impala Owner's Manual page 158

Resuming a Set Speed
If cruise control is set at a desired speed and the
brakes are applied, this shuts off the cruise control.
However, it does not need to be reset.
Once your vehicle reaches a speed of about 40 km/h
(25 mph) or more, press the +RES button on the
steering wheel. The vehicle goes back to the previously
selected speed and stays there.
Increasing Speed While Using Cruise
Control
To increase the cruise speed while using cruise control:
•
Press and hold the +RES button on the steering
wheel until the desired speed is reached, then
release it.
•
To increase vehicle speed in small increments,
press the +RES button. Each time this is done,
the vehicle goes about 1.6 km/h (1 mph) faster.
4-8
Reducing Speed While Using Cruise
Control
To reduce your speed while using cruise control:
•
Press and hold the SET– button on the steering
wheel until the desired lower speed is reached,
then release it.
•
To slow down in very small amounts, press the
SET– button on the steering wheel briefly. Each
time this is done, the vehicle goes about 1.6 km/h
(1 mph) slower.
Passing Another Vehicle While Using
Cruise Control
Use the accelerator pedal to increase vehicle speed.
When you take your foot off the pedal, the vehicle
will slow down to the cruise speed you set earlier.
Using Cruise Control on Hills
How well the cruise control will work on hills depends
upon the vehicle speed, load and the steepness of the
hills. When going up steep hills, you might have to
step on the accelerator pedal to maintain your speed.
When going downhill, you might have to brake or shift
to a lower gear to keep your speed down. If the brakes
are applied the cruise control will turn off.