Dealing with an '01 Impala having a charging type issue.... the battery keeps going dead, you'll be driving, and sitting at a light and engine will die, you'll be driving down the interstate and the engine will die....it has had 2 new batteries, and 2 alternators....but the battery keeps going dead...... when it cuts off while driving it'* similar to an alternator issue..... and seems to still be putting out at least 13.5-14 volts..... what else can i look at?

Did you verify output with a meter or your gage? You might have two issues goin on.

meter... i will get my test light tomorrow afternoon and check for leeches.....but it should no die once started............... wonder if i have an ecm going bad?

If your charging above 13 volts your charging system is working fine. Is the battery light on? Im thinking you have a module staying awake causing a draw. Perform a draw test on the battery with your meter. 25 milliamps is the most you want to see.

Wait, did I read that wrong?

Are you saying, when the engine dies, the battery is still at 13-14 volts?

that what it seemed like to me, there are a ton of things that can cause it to die just driving. CKP, maf, icm are the common ones

Working fine today....output of alt. just fine..... could not duplicate problem.... I'm beginning to suspect it may be a bad ground, faulty battery cable or the like I need to check.... it'll just die out of the blue occasionally and not restart without being jumped.... I may have 2 issues, a weak battery, and an internally corroded battery cable....or the like.

A faulty battery cable, or a weak battery will not make the car die while already running, if your alternator is good you can totally disconnect a battery cable while it is running, and it will still run.
I'd not try to do that tough, as you could get a really nasty shock.

I think Justin is right, it is either the crank sensor, ICM, or MAF.

Some of the things I have seen cause a GM vehicle die when running include a bad ignition switch and a failing fuel pump. If you have the voltage and it does not turn over after dieing, a ignition switch (which is separate from the ignition key) may be something to keep in mind.