When I purchased the vehicle it came with the problem. We had the mechanism in the gas tank changed hoping that would help but it didn't. Fill the tank up, get in the car and turn it on and it only shows 3/4 of a tank. Have no idea how much gas is there or how far I can go on a tank of gas. Constantly stopping to fill it up because I don't want to run out. Really annoying. Chevy needs to take care of these types of problems that happen to owners and get it fixed since it is a problem across the board. When you look on the internet and right there are the two problems you are dealing with for your own vehicle and many others have the same complaint it should be Chevy's responsibility!