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chasing more electrical issues and have some ???

jonathon07

New Member
Joined
Mar 17, 2021
Messages
6
2007 5.3 ly5. 365k miles dod delete, diablo predator 2 running stock tune with no dod, new battery ,new alternator

so a small history of what I am seeing or dealing with. I am having issues with one part making other parts malfunction. I had a collapsed dod lifter that made the transmission shudder and shift hard. I rebuilt the motor with a dod delete and the trans came back to life. just recently I had an anomaly where my fuel pump fuse cooked itself and did not burn out in the middle but rather on one post and I still had continuity across the top of the fuse but not at the posts then about a week later the led display in my gauges burnt up which I attributed to a age and possible being as it is part of a bigger problem.

I also had an issue with the radio not turning off when I open the drivers door I now have a p0443and p0463, and can not fill the tank so I changed the vent solenoid and did not fix my issue with the tank but it temporarily fixed the radio issue until 2 days ago. is my truck just aging that badly or am I chasing a weird electrical issue.
I would much rather take the proper approach to figuring this put rather than throw parts at it. i have a field piece 670 meter and a logic probe? where do i start from here? tia
 
First check all the ground wires and there is a bunch...

causeif one goes bad then those electrical things try to find ground another way which can be other components.
 
the 07 ly5 seems to be the hardest thing to find wiring diagrams. it is almost definitely a ground issue because I hit a pot hole and the whole truck came back to life. but this leaves me with the same issue of needing good information. what is the best manual to buy? I know I can fix all this poop. I do it all day long with industrial plc systems but I design and install everything my self so I know the system inside and out. my problem with this 07 ly5 is finding info function and design of the systems
 
Jonathon, see attached. Does this help?
 

Attachments

  • engine electrical.pdf
    2.4 MB · Views: 6
  • ground distribution.pdf
    952.6 KB · Views: 6
  • power distribution.pdf
    283.4 KB · Views: 4
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