Sometimes its spot on accurate. Sometimes, I KNOW there's a full tank and it shows only a 1/4 full....then it'll bounce up to full eventually. Sometimes after driving long distances it still shows 1/2 a tank when I know thats not accurate. Other times it will show bone dry empty a day after a fill-up. I've heard of the sending units in the gas tank going bad, and there may be a liquid product to run through the tank to fix things. Any experiences here? Fixes?
2005 Aveo with about 130K miles.