My radio has poor reception in AM and FM. Does any body have this problem? I have compared it to other cars that I have and there is a definite problem. I took it to the dealer and they told me after they did some updates to try it out. There was no change. The Dealer tells me that if the update does not work that they need to replace the antenna under the back bumper and they will need a couple of days for ordering and replacement. Before I took delivery of the car the dealer had to take the bumper off to install the spoiler. I am wondering if the antenna connection was improperly installed. Anybody else have this problem with poor reception and if so do you have a rear spoiler? I am also wondering if the antenna is poorly grounded.