Buick 2004 Regal Owner's Manual page 107

Setting Cruise Control
CAUTION:
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If you leave your cruise control on when you
are not using cruise, you might hit a button
and go into cruise when you do not want to.
You could be startled and even lose control.
Keep the cruise control switch off until you
want to use cruise control.
1. Move the cruise control switch to ON.
2. Accelerate to the speed you want.
3. Push in the SET button at the end of the lever and
release it. The CRUISE light on the instrument
panel cluster will come on.
4. Take your foot off the accelerator pedal.
Resuming a Set Speed
Suppose you set the cruise control at a desired speed
and then you apply the brake. This, of course, shuts
off the cruise control. But you do not need to reset it.
Once you are going about 25 mph (40 km/h) or
more, move the cruise control switch from ON to R/A
(Resume/Accelerate) briefly. The vehicle will accelerate
to the previous chosen speed and stay there.
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