I have a 2003 Hummer H2, I have electrical power under the hood, battery is new and good. I dont have any electrical power in the interior, no lights, no radio, no ignition power etc. I do have power at the fuse box...

Any help would be extremely appreciated.

 

bump....

can't believe that nobody has any suggestions or idea what the problem is.....

 

I'm bumping this because I'm curious what would cut out all of the power to the interior.
I wish I could tell you, but I don't have a clue.

This probably sounds obvious, but is there any way the wiring harness was damaged or came loose at some point?

Does anyone have any ideas?

 

it's hard to guess why it happened with your truck when you lost all interior lights the same time! Stupid suggestion: Did you check all fuses responsible for all those interior lights? Or may be it's some damage to the wire harness, like Synthetickiller mentioned?

 

Bad ignition switch maybe?

 

Just wondering if you've had any leaks/water issues?

I had a problem where when I signalled right my hazards would intermittently come on.
After much reading. One of the common issues was water had gotten into the interior fuse box. Although the fuses looked good and no water damage was apparent. The inside of the fuse box was corroded And had to be replaced. This may be your issue.
With my issue I removed the affected fuses. Cleaned them up and put some dielectric grease on the pins and so far so good.

Really hope it isn't your fuse box. But since we're stabbing in the dark. Thought I would add my two cents.

 

The weird part is that I have power to the fuse box inside drivers door.....but no power beyond that....not even to the cigarette lighter

 

Here is the back story to this.....

I travel for work....I have a battery disconnect at the terminal so that the hummer doesn't slow drain....(known hummer issue)....

I came home from work....connected terminal....tried to start truck...."tick, tick"....thought okay maybe battery is dead....

hooked up battery charger....used boost feature on charger 150a....truck...."tick...then nothing"....battery started to boil.....battery was fully charged already.....

now no power inside....does the H2 have a main fusible link somewhere that I'm missing....