I have limited power at the master switcher on my 2011 G25x. The only switch that works is my driver side window. All other windows are dead, both the driver/passenger lock buttons are dead, and the back seat window switches are dead. I've tried to do some self diagnosis but my manual doesn't have a fuse map, so it's tough to figure out exactly what's wrong.

Does anyone happen to have any thoughts on this issue? I was told that it could be a BCM but those start at $140 for the part then go up to pay for labor/programming.