Does the 2012 impala have access to
the fuel pump through the trunk or
under the seat? Or does the fuel tank
absolutely have to be dropped?
No. 2000 to 2005. After that, you have to lower or remove the gas tank. To many owners were doing this themselves and the auto industry couldn't make money if the owner did it. Hope this helps.
Does 06 Impala have fuel pump access hole