I have a 2003 Trailblazer and I have found 2 of the 3 fuse boxes that I've been told it has. Was told 2 are under the hood and one under the drivers side rear seat, I have found the one on the drivers side under the hood and the one under the seat but can not find the other one under the hood please help!?

 

I don't recall a 2nd 'fuse box' under the hood on my old '04 Rainier (same thing as a short wheel base TB).