I have a 2003 Chevrolet Express van (custom), with four wheel disk and ABS brakes. The brake warning light (not ABS) is continously flashing and analarm bell (ping-ping-ping) will sound continuosly (but only ping's when the vehicle is in motion). The manuals I've looked at indicate that it could be low brake fluid or the emergency brake is on. The fluid is fine and the emergency brake releases fine. I've taken it to Belle Tire and they couldn't figure it out. Before I take it to the Chevrolet dealer and pay through the nose, I thought I'd throw this out there for all of you internet gear heads. Let me know if anyone has any suggestions. Thanks.