Help car wont start or do anything

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mr tahoe

mr tahoe

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Yup battery was checked and it passed, i even tried the battery on my tahoe
 

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ok, so it would make sense to me then that there is bad ground somewhere, I would get a simple volt/ohm meter out and start checking voltages all over, remove your ground cables and check them for continuity, scuff up the mounting post's and re-install, check voltage to starter, main fuse box, bcm, etc...
 
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mr tahoe

mr tahoe

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So I checked and i do have voltage to the outer fuse box but nothing to the interior fuse boxbut Whats driving me nuts is how on earth do i have power to my horn
 

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well then that is your shorted location, now to just narrow it down, there is a junction box inside the truck where your left foot would sit, covered with a black cover that pops off, I would start checking between there and the main fuse box.
 

swathdiver

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Do these auto have fusible links off the starter anymore? I popped a couple of those presumably due to bad grounds or just being a knucklehead and the car went dark.
 
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mr tahoe

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Hey guys could it be the main fuse box? I tried the fuse box from my tahoe it has a different code but I got power to the dash wouldn’t start or crank but I got power and when i put the sierra fuse box in the tahoe I get power and it cranks but does not start
 

PG01

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Hey guys could it be the main fuse box? I tried the fuse box from my tahoe it has a different code but I got power to the dash wouldn’t start or crank but I got power and when i put the sierra fuse box in the tahoe I get power and it cranks but does not start
Under hood fusebox? You used the top of the sierra on the hoe?
 

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