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is something wrong


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Posted

im not sure if its just the way the truck is or something is wrong. I have a 2007 Silverado classic, sometimes my voltage rests at 12.8 and sometimes iit rest at 14.6. this is driving and at idle. like when I first start up the truck for the first time it will be at 14.6. then my next start up will be 12.8. then the next will be 14.6. should I be worried

Posted

Yeah something is funky then. It sounds like your alt isn't turning on. I'm assuming all connections are tight?

How old is the alt?

Posted

I don't think the brushes in an alt would go bad in 5 years. But I guess anything is possible. Can you get a new alt and swap it in to see if that resolves the problem? Also check the fuse box. My car has a 15a fuse for the alt sense wire. Make sure the connections are clean if yours has such a fuse

Posted

You can always find a place that has some sort of 30 day return policy. If it's not the issue just return it

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