From day one, this vehicle shows the fuel gauge is not FULL when fill-up. It normally shows 7/8 of full tank. As soon as I drive less than 10 miles, gas needle drops to 3/4 full. At empty position, the vehicle only takes in 8 gallons (instead of 13). Basically, the gas gauge is 1/4 tank off from nearly FULL to EMPTY. I took it numerous times to the local Chevy dealership in Kokomo, Indiana (Eriks) for warranty service on this problem. They have tried re-calibration a few times. The last two times, they even changed the fuel tank, fuel pump, fuel sender but no success. Their recommendation is to keep on overfilling the gas tank after it is clicked off automatically. That was GM Engineering direction on fixing the problem not showing FULL. But that does not address the 1/4 tank off after 10 miles driven.

So very disappointed at GM and their fix. How hard is this to calibrate a gas tank and show reasonable accurate information on the gas gauge?

Bought car used at 9,000 miles. Was told it was a GM exec car. I am the first title holder. Noticed the first time I filled the tank that the gauge did not go to full mark. If I stayed at the pump and kept clicking the handle it would usually hit the mark, but just barely. After driving less than 20 miles, gauge would drop to 7/8 full. Then stay there a long time. Finally got tired of it and went to Dealer for help. Dealer says they replaced the tank unit, and did a TSB, even though my car was not within the VIN range. Dealer filled the tank and said it is now accurate. But it still does the same thing. There are many complaints on this issue on the web. But no fix. Dealer says its normal, but their loner cars and all my past GM vehicles don't act this way. I know its not a major issue, but it is annoying!

Dealership in Fremont Ohio will not do anything other than reset computer, which does not fix the problem. I’m sure if I had to pay the cost they would fix it immediately. Time for GM to step up and correct these known problems at their cost.

Update from Jan 4, 2019: In November I filed a complaint with Chevrolet Customer Assistance Center. Surprisingly they were in immediate contact with the dealership. The dealership had me bring the car in on Nov 15 and they had it until Nov 30. Chevrolet Customer Care was in phone contact with me a couple times a week updating me on the status as they were in contact with the dealership. The fix was to replace fuel level sensor and fuel pump module with components designed for a 2.0L engine application. The gauge now goes past full when tank is filled. We have not driven the car much since this was fixed but the gauge appears to be accurately showing the fuel level. Not sure why Chevrolet Customer Care took such an interest in my problem, but they sure stayed on top of this with the dealership with what appeared to be daily contact.