03 lb7 injector wiring schematic??

[bmft0216]

03 lb7
Looking for a wiring schematic for all the injectors where they all run to and from!
Im having codes p0201/0204/0206/0207 with p2146 also a p0307 cyl 7 misfire
Can all this be related cause of the misfire on #7, could that be bad injector causing all this problem? Im new to forum and duramax. Customer said had injectors replaced maybe 2 years ago not sure at what milage they where replaced.
Id rather check all wiring connection before tearing all the mess of past hands on it to pull valve cover! Thanks

 

[TheBac]

Moved to LB7 section.

Could be bad FICM. Search that batch of codes in this section. Its been discussed before.

 

[2004LB7]

I just uploaded some for another guy the other day

FICM wiring?

Just got sent to figure out why the #1 fuse keeps blowing on a 2004 3500 cab chassis. They suspected the ficm is bad. I pulled both connectors on the ficm and still blows fuse. I read that the harness can short to the alt. bracket so I looked and sure enough there were arc marks on the bracket...

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