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I have continuity on some fuses and.not on others. I only.get a scratchy sound from.multimeter. 04 envoy 4.2
 

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Use a test light. VOMs - especially DVOMs are not capable of differentiating from a charged capacitor of a full-on 12V battery source. Digitals 'float' and report oddball voltages when they aren't even hooked up to a circuit - just because of their inherent super-sensitivity.

Be Ye very careful about potential back-probing a low voltage circuit that cannot EVER see 12V! They are 5VDC only - same's true of a digital signal circuit - they will go nipples-up if you hit them with 12V.

Although a DVOM is considered Hi-Z and are supposed to be really safe on low voltages too, it's a chance you don't have to take unless you truly, actually, really, accurately understand what you are probing.
 
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