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: 130,586 mi (70,000 mi - 171,760 mi)
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?!?!?!
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.?
At around 70,000 miles I ran out of gas on the freeway as the fuel gauge registered 1/4 tank.