I have a 2003 Cadillac Seville STS and none of controls (windows, window lock, door lock, mirrors, driver memory) on the driver side door work. The Windows on both back door work just fine and the door lock on the passenger side door work however the window on the passenger door dose not work. I bought a replacement module for the driver side door I installed it and nothing I believe that I just need to take it in to get it programmed. However, I was wondering if anyone has any suggestions or troubleshooting I can do to be sure that it was in fact the module before I take it in and pay to have it programmed only to learn it was something else all along. I have a volt and ohms reader just not sure which wires to test and what to test for.