I have a 2000 S-10 Extreme and have just recently noticed that my fuel gauge reads empty when there's a full tank. Then there's times when it reads full. It reads full or empty no matter how much gas is in the tank.
I've heard that chevy will put an additive in your tank to solve the problem because they blame it on additives from gas companies. I've also heard that it's due to a faulty sender unit. So which is it?