GMC 2009 Sierra - Manual (Page 148)

The cruise control buttons
are located on left side of
the steering wheel.
T
(On/Off): This button can both activate and turn
off the system. The indicator light is on when cruise
control is on and turns off when cruise control is off.
+ RES (Resume/Accelerate): Press this button
to make the vehicle accelerate or resume to a previously
set speed.
SET
−
(Set/Coast): Press this button to set the speed
or make the vehicle decelerate.
[
(Cancel): Press this button to cancel cruise control
without erasing the set speed from memory.
Setting Cruise Control
Cruise control will not work if the parking brake is set, or
if the master cylinder brake fluid level is low.
The cruise control light on the instrument panel cluster
will come on after the cruise control has been set to
the desired speed.
{ CAUTION:
If you leave your cruise control on when you
are not using cruise, you might hit a button
and go into cruise when you do not want to.
You could be startled and even lose control.
Keep the cruise control switch off until you
want to use cruise control.
1. Press the cruise control On/Off button.
2. Get up to the desired speed.
3. Press the SET − button located on the steering
wheel and release it.
4. Take your foot off the accelerator.
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