Hello, i have a 2003 Impala which the fuel guage dont work! LIKE EVEY OTHER DAMN GM CAR!! i believe it to be the sending unit, is there an access panel to the fuel pump under the rear seat or in the trunk? or am i going to have to drop the tank?????

 

No need to drop the tank....http://impalahq.naioa.com/index2.html

 

You can get to it from inside the trunk.

 

there is an access hole under the spape tire