Other Fuel System Fuel Gauge problems of the 2002 GMC Envoy

I have had a intermittent rumbling sound in the drivers compartment like the doors are not closed properly. I have checked doors closed but yet it still happens. Took back to dealership and they could not find a problem. The fuel gauge is reading incorrectly, at a half a tank of fuel the gas hand will intermittently move up or down. Also Nov. 2006 a high pitch squeal from the front of vehicle while driving between 1 and 40 mph.

Gas gauge was 1/4 tank off, returned to dealer to fix problem after running out of gas. Dealer replaced float/sender. Returned to dealer one hour later after attempting to fill tank with fuel and fuel poured out of top of tank. Dealer then claimed the fuel tank was defective and distorted by the factory, ordered new tank, replaced same. All is working now.