Cruise Control problems of the 2005 Chevrolet Silverado 2500

While driving my vehicle on a city street at approximately 45 miles per hour, I set the cruise control to maintain the 45 mile per hour speed. After less than 60 seconds, the cruise control cause the vehicle to accelerate rapidly to 85 miles per hour. Stepping on the brake at first did not cancel the cruise control. When it did finally cancel, I continue to drive manually. The cruise control then took over again and cause the vehicle to accelerate rapidly, exceeding the speed limit. Once again, the brakes were applied and the cruise control cancelled. The cruise control was turned off at the main switch on the turn signal stem. Later on, the cruise control was turned back on and tested again with the same results. After the third attempt to set the cruise control at 45 mph, the cruise would not set at all. The vehicle was taken to an independent repair shop. They were not able to find any specific electrical problems. But they did indicate that the cruise control module itself would probably be at fault. If the cruise control switch is left in the on position, but the cruise is not set, it may randomly take over the throttle and accelerate or sometimes hold its own speed for several minutes at different rates of speed. This creates a hazardous situation for all occupants of the vehicle along with others that may be in the path of the truck when it randomly accelerates. As of the time of this writing, a solution has not been found to correct this situation.