My 2001 Chevrolet 1500 Suburban has a high pitched sound, almost a ringing, coming from the fuel tank area. DO you have any suggestions as to what the cause of this may be?
The only thing that can cause this condition inside the fuel tank would be the fuel pump. Have a certified mechanic inspect the noise condition to see if a repair would be needed.
I don't know if you are the original owner but there is a fuel module modification that is a recall. Have the dealership check service records to see if your vehicle was repaired in the past for this condition.