Buick 2010 Lacrosse Owner's Manual page 263

SET/ (Set/Coast): Move the
thumbwheel down to set a speed or
to decrease the speed.
To set a speed:
1. Press to turn the cruise
control system on. The indicator
light in the instrument panel
cluster comes on.
2. Get to the speed desired.
3. Move the thumbwheel down
toward SET/ and release it.
The desired set speed briefly
appears in the instrument panel
cluster.
4. Take your foot off the accelerator
pedal.
When the brakes are applied, the
cruise control shuts off.
Resuming a Set Speed
If the brakes are applied or the
Cancel button is pressed while the
cruise control is at a set speed, the
cruise control disengages without
erasing the set speed from memory.
Once the vehicle reaches about
40 km/h (25 mph) or more, move the
thumbwheel up toward RES/+
briefly . The vehicle returns to the
speed selected previously and stays
there.
Increasing Speed While Using
Cruise Control
If the cruise control system is
already engaged,
Move the thumbwheel up toward
RES/+ and hold it until the
vehicle accelerates to the
desired speed, and then
release it.
To increase the speed in small
amounts, move the thumbwheel
up toward RES/+ briefly and
then release it. Each time this is
done, the vehicle goes about
1.6 km/h (1 mph) faster.
Driving and Operating
Reducing Speed While Using
Cruise Control
If the cruise control system is
already engaged,
Move the thumbwheel toward
SET/ and hold until the desired
lower speed is reached, then
release it.
To slow down in very small
amounts, move the thumbwheel
toward SET/ briefly and then
release it. 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 the vehicle's speed. When
you take your foot off the pedal, the
vehicle will slow down to the
previously set cruise control speed.
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