My daughters car is a 2008 Impala and I only see it when it needs work. It currently has a problem where both rear power door locks do not work from any control or the remote. She thinks they failed at about the same time, but not 100% sure. At first I presumed that it was the actuators since I've heard they are known to fail early. Then I stumbled across a video on youtube talking about a common failure in GM products where a splice in the wiring harness in the front passenger doorway can corrode. I'll check that first, but if I have to replace the actuator/lock assemblies how difficult is that? Would I need to remove the window and regulator? Anyone else experience this issue - and what was your solution? Lastly - not under warranty as it has about 70k miles. Thanks!