Does the2005 model impala have the same problem with the wire inside the back pass. Door soider joint going bad and loosing power to the amp as in the 02 I saw on a forum in here. Please. Let me know if so we're about the connection is located

 

Not sure if helps?

It's a 2003 Impala, didn't really saw what the actual problem is from your post.

 

There is no sound coming out of the speakers. The radio has power but the factory amp in the trunk doesn't have power. Hence no sound.. I read that in the 02 that problem is common and it is caused by a connection in the wires running to the trunk. The one ruin that is faulty is under the carpet in the pack passenger floorboard. Or at least in an 2002 impala.
I have a 2005 impala with the same problem. Can anyone tell me if the fix is the same???? I'd like to know b4 I start pulling my car apart. Lol thank you for any help , sorry my first post was unclear ..