GMC 2007 Savana - Manual (Page 151)

Cruise Control
If your vehicle has cruise control, you can maintain
a speed of about 25 mph (40 km/h) or more without
keeping your foot on the accelerator. This can really
help on long trips. Cruise control does not work at
speeds below about 25 mph (40 km/h).
If you apply your brakes, the cruise control will
disengage.
{ CAUTION:
Cruise control can be dangerous where
you cannot drive safely at a steady speed.
So, do not use your cruise control on
winding roads or in heavy traffic.
Cruise control can be dangerous on
slippery roads. On such roads, fast
changes in tire traction can cause
excessive wheel slip, and you could lose
control. Do not use cruise control on
slippery roads.
9 (Off): This position turns the system off.
R
(On): This position activates the system.
S
(Resume/Accelerate): Push the lever to this
symbol to make the vehicle accelerate or resume
to a previously set speed.
T
(Set): Press this button to set the speed.
151