"Battery Not Charging" message

[stuart]

Originally Posted by blckshdw

I would try it by putting the positive probe on the positive output of the alternator to make sure the alternator is/isn't putting out the 14.5V it's supposed to when running.

To be clear I'm correct. There is only one output of any gauge on the alternator, a heavy black cable runs from it towards the battery. There is also a plug with two small gauge (20?) wires that goes into the wiring harness. The heavy cable is connected to the positive output you mention correct?

[stuart]

The area around my alternator is much more crowded than yours, I'd love to have the room to work like that! I tried my best to test at the back of the alternator but my DMM only has the sharp probes not alligators. I'm working by myself so I'm not confident in the readings (which were all over the scale.)

I'm afraid it's throw my hands up time. I've had this vehicle in the garage too long and to make matters worse MY daily driver threw a serpentine belt Saturday afternoon. So now my car and my wife's Envoy are idle. I just need to get this thing running so I'm seriously considering taking it to a garage as soon as my car is done. Wonder how far I can go in the Envoy with this problem, I mean without a battery charging?

[pboneox1]

Did you ever find the problem to this. My truck is doing the same thing and sounds like from what I can find it is the wirring to the PCM or the plug that is the problem as mine has 14 volts at times and then other times it does not charge and dies.