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Aztek Alternator replacement 2003 Aztek 3.4 V6 105 amp

How do you replace the (105 amp) alternator in a 2003 Aztek 3.4L? I determined that it's the alternator as I have a new battery that delivers 12.5 VDC with the engine off. The alternator produces 14.8 volts while the engine is running and will intermittently kick out so I am back to the 12.5 VDC from the battery. I believe it to be the regulator. Anyway, it looks pretty straight forward but I thought I'd post this while waiting for my fingers to thaw out (wife has garage all piled with crap for an upcoming move...).

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