Pontiac 2003 Montana Owner's Manual page 189

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 from ON to
R/A (resume/accelerate) briefly.
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.
Increasing Speed While Using Cruise
Control
There are two ways to go to a higher speed:
Use the accelerator pedal to get to the higher
speed. Press 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 R/A. 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 briefly 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
have set an initial cruise control speed.
Reducing Speed While Using Cru
Control
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There are two ways to reduce speed while using cruise
control:
Press 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, press the SET
button briefly. Each time you do this, you'll go about
1 mph (1.6 km/h) slower.
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