Pontiac 1998 Trans Sport Owner's Manual page 168

You'll go right back up to your chosen speed and
stay there.
If you hold the switch at WA 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.
Increasing Speed While Using Cruise Control
There
are
two ways to go to a higher speed:
0
e
Use the accelerator pedal to get to the higher speed.
Push the SET button at the end of the lever, then
release the button and the accelerator pedal. You'll
now cruise at the higher speed.
Move the cruise switch from ON to WA. Hold it
there until you get up to the speed you want, and
then
release
the
switch.
(To increase
your speed in
very small amounts, move the switch to WA for less
than half a second and then release it. Each time
you do this, your vehicle will go about 1 mph
(1.6
km/h)
faster.)
The accelerate feature will work whether or not you
have set an initial cruise control speed.
Reducing Speed While Using Cruise Control
There are two ways to reduce speed while using
cruise control:
0
Push in the SET button at the end of the lever until
you reach the lower speed you want, then release it.
To slow down in very small amounts, push the SET
button for less than half a second. Each time you do
this, you'll go 1 mph (1.6
km/h)
slower.
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.
2-57