Turn the key off and on for three times and that should prime the system.
It is in the gas tank.
The 2010 Chevrolet Impala runs on flex-fuel (FFV).
The 2009 Chevrolet Impala runs on flex-fuel (FFV).
The 2006 Chevrolet Impala runs on flex-fuel (FFV).
The 2007 Chevrolet Impala runs on flex-fuel (FFV).
The 2012 Chevrolet Impala runs on flex-fuel (unleaded/E85).
The 2011 Chevrolet Impala runs on flex-fuel (unleaded/E85).
The 2008 Chevrolet Impala runs on flex-fuel (unleaded/E85).
The 2013 Chevrolet Impala runs on flex-fuel (unleaded/E85).
There are 2 fuel lines. One is a pressure line to the injectors and the other is a return to the tank.
A 2000 Chevrolet Impala may stop running and show no error codes if it has simply run out of gas. The vehicle's computer is capable of detecting errors with all systems in the vehicle which should otherwise present an error code.
The 2004 Chevrolet Impala runs on regular unleaded.