Hey all, I am new to the forums and just bought my first Chevy truck. It's awesome! A 2005 Suburban Z71. I did drive Jeeps for a long time cuz a family member works there, but was tired of them and wanted a real truck! I have a problem with the factory nav/cd system on the truck. I already talked with the dealer and they said it would be a bout $500 to refurbish the nav/cd player. I know new ones are like 2k from GM - not happening! So, what I was wondering is if I should stick with the factory GM nav/cd system or can I go with an AM system? I want to leave the option open of using the onstar system sometime in the future, but what I don't know is how the factory nav system ties into the onstar. Are AM systems able to utilize the onstar? Thanks for any help!