Electrical issues?
 

I have an 06 Trailblazer and over the weekend I discovered what I thought was my tailgate and rear window not unlocking when I tried with my remote or using the door switch. I had this problem last year which turned out to be the mechanism just sticking and binding which I was able to fix so I assumed this was happening again. However before I had a chance to start working on anything I discovered my rear wiper, rear washer and rear defogger weren't working and my license plate light wasn't either. I have also noticed my radio is not staying on after the vehicle is turned off like it normally does as it's shutting off as soon as the ignition is turned off. Any help or suggestions is greatly appreciated.