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Fuse box (underhood)

19K views 79 replies 20 participants last post by  nj6969  
I was told all years are the same. On the SSR the fuse diagram is under it. Trailblazer will fit but fuse diagram is different.
03-04 fuse box is NOT the same as the 05-06. The layout is different and the decal under the lid is different

Mike
 
Please note that the 125 amp fuse has nothing to do with engine starting. It Is there to protect the main feed line to the cabin fuse box.

My vote is to find a good used 03-04 engine fuse box and replace yours. When you do, I would highly recommend you inspect the electrical connectors that plug into the bottom of the fuse box. Water ingress into the fuse box is insidious.

Mike