OK for those with the tech pkg. Bluetooth etc. Say I wanna disconnect the battery for service/reset comp. etc. will I lose my phone settings/radio settings/address book yada yada. or does the ecm have a backup battery?( like a pc to store time/date etc.) I'm at work and the manual is in the truck and I don't have the time for search. Thinking I don't wanna go thru the hassle of resetting all my phone info/addresses if I don't have to. Thanks in advance.