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Fuse box (underhood)

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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 engine fuse box is different from 05/06. So is diagram. 03/04 PCM -Power Control Module 05/06 ECM Engine Control Module, just an example.

05/06 R has 200 times more software and an engine fuse box production problem.

How to Library on 05 Engine fuse box broken wire that ONLY happens when engine compartment is HOT! Let cool, R start and runs until it gets to HOT again. I have repair lots and lots of them. Have some in stock, repaired.

Look up FUSE BOX REPAIR


This also covers the the 7mm jack screws and how important that they are tight.

Every few years I remove, one by one every fuse and relay in my fuse box, why? 16yrs old.

Dicktator
 

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@the_real_camby, you may be onto something. If you haven't already replaced the 125 amp fuse, that's the next thing I would do. Easy and inexpensive. A number of threads discuss them becoming flaky and going bad (@Dicktator can tell you more). We carry a spare at all times. Of course, clean the terminals as @SWT RYD suggests while you're at it. Our local parts stores didn't carry them, so ordered it from Amazon.


Thanks for keeping us posted!

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What and where are all those wires going to in the Rear Fuse Box??

Dicktator
 

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Okay, I am not sure I would do it that way because you are on the Rear Fuse Box fuse which is the 125amp.

If something were to happen, it could take out your Rear Fuse Box.

Just concern about Multiplex wiring and rear fuse box.

Red wire close to fender is to Battery, sure Mike's fan has fuse and your LED lights also.

There is a PP on How to for "spare" fuses in rear fuse box. Look up SPARE FUSE LOCATIONS

My 2 cents

Dicktator
 
I checked and all of the added connections running to the under hood fuse box and they are fused.

I've used your directions for adding accessories in the rear fuse box as well including our dash cam, the LED lighting for the Windjammer and our backup camera.

I think I'll leave well enough alone otherwise, if it ain't broke and all. At least for now.

Thanks Dicktator!

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Sounds like you have it under control. Sorry I just wanted to help.

Dicktator