3G alternator

[snipes243]

So I'm having some problems with them. Last year I killed 2 of these stupid things but now I have a weird issue. When I first put the alternator on it will out out like 13.5 volts. But after I go drive the best I get is like 12.9. I have double and triple checked the wiring and the mega fuse. I took the alternator to the auto parts store and it checks out there. So I look at the common denominator for all my issues and it's the same belt. It tight and doesn't squeal,But looks worn. Could a worn belt slip but not squeal?


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