I have a Pontiac Grand Am 2000, my fuel gauge was working just fine until I changed the fuel pump. It indicates that it has a full tank. What should I do.
I changed my fuel pump due to the fact that it wasn't starting, but before that the fuel
gauge was working just fine. Now it indicates that the tank is full what should I do.
Possibly the harness or connector got messed when the pump was changed. The same harness feeds the pump and gauge. Or, you are the latest victim of 'corrosive fuel' according to TSB GM. http://www.grandamgt.com/forum/showthread.php?t=22264 Changing out the sending unit is easy, but check the harness first.