i tried to have the pdmi module installed by my local chevy dealer to install ipod usb jack. so controls on steering wheel can be used, and so music info will be displayed in radio window when i pod is playing music. and will also charge ipod. it is set now with ear bud audio plug that is what came with vehicle new which is why i have to update.dealer was unable to install module claiming there were compatibility issues. they had car four days and no results. they gave up all there records say the module should work! the kit cost like 280.00 and 1.5 hours to install and they could not do it they also claim i was the first in the country to have this issue.