this is a 2003 Chevrolet radio it has
been unlocked which means that you don't
need to take it to a dealer to get it
programmed if you want to switch it from
car to car if you hook it up to power it
will work the way this is done is it's
there's a modification you have to do to
the main circuit board the effects the
only negative effects of this are that
there is a tape symbol in the corner of
the screen and when you turn the radio
on it flashes Cal earth I think that
means calibration error it knows that
the it doesn't have all all of its
factory settings but other than that it
works as it would in in the factory
installation the benefits of this is you
don't need to pay the dealer to program
a vehicle if you're going to install the
vehicle and install the radio in a
vehicle it wasn't meant for or you can
hook it up like this in a garage to
listen to the radio but all the
functions work the tuning the presets
the CD player that's pretty simple you
have to have soldering skills and know a
little bit about electronics to to
switch it to this mode but it's
definitely worth it
you