It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.Google+
Car Problem Reports
Chevrolet Avalanche 1500 Fuel Level Sensor Failure
Chevrolet Avalanche 1500 Problem
Average Mileage: 133,952 mi (70,000 mi - 171,760 mi)
Visitor, 2004 Chevrolet Avalanche 1500, 150,000 mi
Gas gauge shows various levels of gas each time the key is turned on. Gauge moves slowly up or down when driving stopping at times.
Don't know if problem is with gauge or sensor.?
Visitor, 2002 Chevrolet Avalanche 1500, 109,956 mi
At approximately 12 gallons remaining in the tank, I begin to get "low Fuel" warnings and actual fuel gauge will appear to register below "E", then will ease back up to between 1/2 and 1/4 tank within a few minutes.
Visitor, 2003 Chevrolet Avalanche 1500, 162,000 mi
my gage on dash does not read at all it tells me i am low on fuel when I just filled it up it seems stuck
Visitor, 2004 Chevrolet Avalanche 1500, 171,760 mi
I put $50 dollars worth of gas in my tank, around 12 gallons, and when I left the gas station I had a nearly half a tank. (I believe it holds 30 gallons including the reserve.) Not even 24 hours later and not that much driving shows me on my reserve tank again! WTF?!?!?!
At around 70,000 miles I ran out of gas on the freeway as the fuel gauge registered 1/4 tank.