Fuel pump whine is a common occurance in the 99-01 GM trucks. I wouldn't worry about it as it is a faulty plastic bearing in the pump. If it gets too bad and you can't hear the radio have it replaced.
It is a major job as the tank has to be dropped. NOT for a home mechanic. I expect it will cost about $300+ Good Luck!
Wednesday, March 29th, 2006 AT 4:57 PM