2001 Silverado Brake Warning Light Question

Release the EMERGENCY BRAKE

Unless the Brake fluid in the master is low, the Float in the master could be stuck down! If you have really dirty brake fluid it can build up crud in there and cause the float to stick. Is the brake fluid dark black? It should be really light brown in color almost clear when new. There are ways to get the float unstuck. Then flush the system out if that's the problem.

It's not the emergengy brake. The light flashes when the emergency brake pedal is depressed even slightly. Thanks. I'lll check the float in the master cylinder tomorrow. I appreciate the suggestion. Mark

I am not sure of the design. but often there is a pressure switch between the two halves of the brake lines (each feeds two wheels) to detect loss of pressure in one side. Ususally this switch is internal to the master cylinder but may be external. Some of them, once upset will have to be reset. Sorry I am not more familiar with this particular one. I would look for any minor leaks near anything they worked on, like all four caliper connections, or take it back to them.