I have a 2003 SS and have tried two different handsfree kits using the tel1 connections on the back of EHU. In both cases the sound qulity is very poor through the car front speakers. The sound can be described as overamplified, scratchy and breaks up at times. The sound quality is not near as good as the onstar announcement. I currently am using a PARROT CK3100 bluetooth unit with audio isolation transformer in line with the tel1 inputs and bluetooth module line outputs. I get main power from the drivers side fuse panel, switched power and ground from the cigerette lighter. Mute works properly. I have read many posts on this forum about good sound quality and some that might be poor with tel1. My question to this forum is the following: Is this poor sound quality a problem with the EHU? It seems that it is because some have good sound while some may not? I am currently trying to get SAAB to exchange the unit but as one might expect I am running into trouble. I only have a few thousand miles left on the warranty.