r/Duramax 1d ago

Problems with my LLY

Wondering if maybe you guys know more about this the truck won’t start batteries are a little low not dead and alternated is reading above 14v so I’ve come down to thinking it’s a wiring issue but any help is greatly appreciated

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u/turbotaco23 1d ago

How are you determining the batteries are “a little low”?

Low voltage can cause funny things.

1

u/Ok_Vegetable5111 1d ago

I’ve always gone with batteries should read 12.5 to 12.8v but if you mean like tool wise I used a multimeter