GMC 2010 T-Series Owner's Manual page 87

Setting Cruise Control
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SET: Press this button at the end of the
multifunction lever to set the cruise control speed.
+ RES : Resumes the set speed.
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WARNING:
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.
This button located at
the lower left side of the
instrument panel, turns
the cruise control on
and off.
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1. Press the button to turn the cruise control on.
The light inside the switch will turn on.
2. Get up to the desired speed.
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3. Press in the SET button at the end of the lever
and release it.
4. Take your foot off the accelerator pedal.
Resuming a Set Speed
If the cruise control is set at a desired speed and the
brake or the clutch is applied, this shuts off the cruise
control. But it does not need to be reset.
Using the accelerator pedal, increase the vehicle's
speed to 40 km/h (25 mph) or more. The cruise control
does not work below this speed.
Move the band on the lever to the +RES position and
release it. The vehicle will accelerate to the previously
set speed.
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