Buick 2007 Terraza Owner's Manual page 180

Reducing Speed While Using
Cruise Control
There are two ways to reduce the vehicle's speed
while using cruise control:
•
Push the cruise control lever downward toward
the minus (set/coast/decelerate) position until
a lower speed is reached, then release it.
•
To slow down in very small amounts, push
the cruise control lever downward toward the
minus (set/coast/decelerate) position briefly.
Each time this is done, the vehicle will slow
down approximately one mph (1.6 km/h).
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 cruise control
speed set earlier.
Using Cruise Control on Hills
How well the cruise control will work on hills
depends upon the vehicle's speed, its load, and
the steepness of the hills. When going up steep
hills, the accelerator pedal might have to be
used in order to maintain the vehicle's speed.
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When going downhill, the brakes might have to be
applied, or the transaxle might have to be shifted
to a lower gear to keep the vehicle's speed down.
Doing either of these things will take the vehicle out
of cruise. It may be better not to use the cruise
control if the brakes constantly have to be applied,
or the vehicle continuously needs to be shifted to
a lower gear.
Cancelling Cruise Control
To cancel a cruise control session, pull the cruise
control lever forward, or step lightly on the
brake pedal.
Doing either of these things will only end the
current cruise control session, but the set speed
will be retained in memory.
Push the button at the end of the cruise control
lever to turn the system off.
Erasing Speed Memory
When the cruise control or the ignition is turned
off, the cruise control set speed memory is erased.