Hello, I have a 97 camaro automatic with 78,000 miles. When i start my car cold in the morning it makes this sound that sounds like a chain hitting metal or a clinging sound. It makes a louder sound sometimes when i let off the gas and put on the brakes. The sound seems to go away after the car heats up. I recently had a overheating problem. Could this have caused the coolant pump bearings to go bad? Thanks for your help.