I have a 2003 trailblazer ext v8. My fuse box is bad and I can not for the life of me figure out how to fix it. Or where to buy a new one. It first started with the car not want to start. I have to use a jumper wire were the relay goes sometimes to start it. Then the AC stopped working everything is good except it's not getting the signal from the relay. Then the fule pump. I can jump it to and it will run just fine. I don't not drive it that way. Then today I got codes for my injectors. And the car ran really rough. I messed with the fuses and it ran just fine. I know it's the box and the connectors to the box. I just can not fine one for my year and a v8. Please if someone know where to get this let me know.

 

I used to have an 03 Trailblazer. The fuse box had a relay melt and damage the box. It was still under warranty at the time and the dealer would not fix it under warranty saying it was not covered. I called Chevrolet and complained and they told the dealer it was covered and I had it replaced for free. Anyway, Ebay has used ones or you can try your local junkyards.