2004 Chevy Trailblazer electrical issues?

My power windows, stereo, Air condition, power doors, inside lights are not working even when the vehicle is start up What can this issue be I checked all my fuses, battery and alternater and they are good
Answers

bo

yes it could be the BCM but it also might be a bad ground

Anonymous

Check for trouble codes. Looks like a bad Body Control Module.

thebax2006

Did you check both fuse boxes?

Donald

A fusible link or high amp dedicated fuse in box under hood is blown.

Anonymous

Your computer (ECM) is ready to fail. That's the exact symptom I had before it quit altogether and wouldn't even crank over any more.