GMC 2001 Safari Owner's Manual page 118

Setting Cruise Control
CAUTION:
If you leave your cruise control switch on when
you're not using cruise, you might hit a button
and go into cruise when you don't 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. Get up to the speed you want.
4. Take your foot off the accelerator pedal.
3. Press in the SET button
at the end of the lever
and release it.
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.
You'll go right back up to your chosen speed and
stay there.
If you hold the switch at R/A, 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 R/A.
Once you're going about
25 mph (40 km/h) or more,
you can move the cruise
control switch from ON to
R/A briefly.
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