Seeing the radio and lights did that,I would bet there is a bad ground

 

you have a second pcm i take it? did you swap the stock one back in? what about the ignition switch,in many gm model's when it goes bad everything goes haywire...

 

Yea I have the truck stock PCM also and then one with the tune one it.

Today when I shut the truck off the radio went off right away and the radar dector reset, put the key back in and it cam back on. I was woundering if the ignition had some to do with it?!?!

How much do the ignition cost any one know?

 

Checking grounds and ignition switch are good places to start, maybe even a bad battery cable...