One problem related to brake disc pads has been reported for the 2000 Chevrolet K3500. The most recently reported issues are listed below.
I purchased a new 2000 chevy 3500 4 door dully. It now has 67,000 miles. The truck has worn out seven sets of brakes and at this moment it needs the 8th set plus the front rotors are cracked from excessive heat and need to be replaced. Even with new brake pads the truck will not stop as it should you must drive it like your driving in snow. I seldom drive it over 55 miles per hour unless I am on the open road with no cars in sight. I have had no accidents just several close calls. But that is a result only of my defensive driving habits. I purchased this truck for heavy hauling but the truck won't stop itself much less a loaded trailer. The dealer was happy to put new brakes on as long as the general was paying the bill but now that the 3 years 36,000 has expired it's just me and my check book.