Oldsmobile 1998 Silhouette Owner's Manual page 159

3. Push in the SET button at the end of the lever and
release it
.
4. Take your foot off the accelerator pedal.
Resuming a Set Speed
Suppose you set your cruise control at a desired speed
and then you apply the brake. This, of course, shuts off
the cruise control. But you don't need to reset it. Once
you're going about 25 mph (40 km/h) or more, you can
move the cruise control switch from ON to
RESUME/ACCEL @/A) for about half a second.
You'll go right back up to your chosen speed and
stay there.
If you hold the switch at R/A longer than half a second,
the vehicle will keep going faster until you release the
switch or apply the brake. So unless you want to go
faster, don't hold the switch at WA.
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