2008 Chevrolet Colorado Owner's Manual - Page 145

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 4-5. When road conditions allow you to safely use it again, you can turn cruise control back on. 3-11