GMC 1997 Safari Owner's Manual page 111

Passing Another Vehicle While Using Cruise Control
Use the accelerator pedal to increase your speed. When
you take your foot off the pedal, your vehicle will slow
down to the cruise control speed you set earlier.
Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load and the steepness of the hills.
When going up steep hills, you may want to step on the
accelerator pedal to maintain your speed. When going
downhill, you may have to brake or shift to a lower gear
to keep your speed down. Of course, applying the brake
takes you out of cruise control. Many drivers find this
to be too much trouble and don't use cruise control
on
steep hills.
Ending Cruise Control
There are
two
ways
to
turn off the cruise control:
Step lightly on the brake pedal.
0
Move the cruise switch to OFF.
Erasing Speed Memory
When you turn off the cruise control or the ignition,
your cruise control set speed memory is erased.
Lamps
Your lamp switch is on the driver's side of the
instrument panel.
Rotate the knob clockwise to the parking lamp symbol
to turn on the following:
Parking Lamps
Taillamps
License Plate Lamps
Instrument Panel Lights