GMC Jimmy 2004 Owner's Manual page 142

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.
OFF: Move the switch to this position to turn the cruise
control off.
ON: Move the switch to this position to turn the cruise
control on.
3-10
The cruise control system
is located on the end of
the turn signal/multifunction
lever.
R/A (Resume/Accelerate): Move the switch to this
position to maintain a desired speed after braking.
SET: Press this button at the end of the lever to set
your desired speed.
1. Move the cruise control switch to ON.
2. Get up to the speed you want.
3. Press 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 briefly from
ON to R/A (Resume/Accelerate).
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.