Chevrolet 2007 Colorado Owner's Manual page 167

+ (Resume/Accelerate): Move the lever to this
position to make the vehicle accelerate or resume
to a previously set speed.
rT
(Set): Press this button to set the speed.
With cruise control, the vehicle 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).
Cruise control will not work if the parking brake
is set, or if the master cylinder brake fluid level
is low.
If the brakes are applied, the cruise control
will shut off.
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.
If your vehicle has the Traction Control System
(TCS) and it begins to limit wheel spin while
the cruise control is on, the cruise control will
automatically disengage. See Traction Control
System (TCS) on page 253. When road conditions
allow you to safely use it again, you can turn
cruise control back on.
167