GMC 1996 Suburban Owner's Manual page 98

easing Speed While Using Cruise Control
Passing Another Vehicle While Using Cruise Control
There are two ways to
go
to a higher speed:
0
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 control 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 RIA for
less than half a second. Each time you do this, your
vehicle will go about 1 mph (1.6 km/h) faster.)
Reducing Speed While Using Cruise Control
There are two ways to reduce your speed while using
cruise control:
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
button for less than half a second. Each time you do
this, you'll go 1 mph (1.6 km/h) slower.
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 have to step on the
accelerator pedal to maintain your speed. If the
steepness of the hill causes the vehicle speed to drop
more than 15 mph (24 km/h) below the set speed, your
cruise control will automatically disengage. 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.
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