In this video, I go over how to fix the GX470 with Mark Levinson Sound. Mine is a 2006 with navigation.

Tools needed:
(Don’t need all of these, but included in case I missed anything)

8, 10, 12, 14mm sockets
T15, T20, T25 Torx
Phillips (+) screwdriver

If you have any questions or are interested in my GX, please post below!