GMC 1993 Safari Owner's Manual page 94

Features & Controls
To Sei Cruise Control
Move the Cruise switch to ON.
I
*
I f you leave your Cruise Control switch on when you're not
using
L
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 it.
I
Get up to the speed you want.
Push in the
set button at the end of the lever and release it.
Take your foot
off the accelerator pedal.
2-36