06 Avalanche Poor Reception

[jtstacy77]

I have an 06 avalanche and the radio reception is horrible compared to all other vehicles I have. I bought the truck used and the reception has been poor since I bought it. Most of the time both front speakers can barely be heard and the left rear is the same way. Every once in a while the front ones will work. On top of that I can't use the onstar phone because of the speakers. Any help would be appreciated!

[gregrocks89]

Did you make sure your harness and antenna cable is not binding up on something?