I have had to replace the alt twice now and those were the symptoms that i was getting. First it was the low voltage, then the trac asst lights, and then the airbag light will go on. This happened both times. One question i have is, when your volt meter is not in the Norm area(around 14.4) when you rev the engine, does the volt meter go back to normal. Because if that is the problem than it is a 95% chance that it is the ALT. The last ALT i got is from NAPA. It is a Remanufactured one, but has a lifetime warranty on it. Its a 150 AMP ALT i believe. I know its a bit higher than the stock ones(135?). I believe i paid somewhere around 300 for it. I know that seems a little high, but what i have gone through already with alternators, i dont mind paying the extra 100 dollars or so for the LIFETIME warranty.