My AVIC 90BT was acting up, specifically it was getting stuck on a station in Sirius mode. I have it installed in a 2005 Chevy Trailblazer. I read on here about fuses and pulled the radio fuse for my vehicle. Upon replacement, everything seemed to work just fine, until this weekend (in Canada) it remained black when starting my car. I took my dash apart and replaced the 10A fuse in the back of the unit itself, but this did not bring it back to life? Thoughts?

If you can get a test light from a local auto parts store... you need to verify the ground, +12v constant and switched power leads. If it all checks out it is the unit which has an issue.

Joe