After filling up for the week, I noticed after a few days of driving that my 06 ss/sc isn't registering any loss of gas in the instrument gauge cluster. I would be very proud if my car was getting that great of mileage but the fact is, I know it should have gone down by now even by a few clicks.

So, I have a gas gauge stuck on "full". Any ideas what my problem could be? 56k miles. No trouble codes set either....:/ Thanks all that reply.

 

Its typical been doing it in mine since mile 0.

 

i would say this is an issue with almost all GM vehicles. I use to have an s-10 that would hit half a tank and stay there for 2-3 days then go to almost empty within 30 minutes of driving.
My families GMC Jimmy does the exact same thing. My Cobalt does the same thing as well.

 

I don't see that as being normal considering mine doesn't do that. I just personally think the low fuel light comes on too quickly.