Why does my 1998 monte carlo z34 die while driving?

Check your fuel filter...might be might not

This could be many things.

Does the vehicle receive regular service and tune ups?

That is air and fuel filters, as well as coil, plugs and wires?

It could as be your coil stating to go bad or it could be the gas filter or also check the gas pump that might be go bad to

I have a 1997 monte carlo z34 3.4 and she runs great but she stalls also if you find the reason for this let me know please @ freakybobbi@yahoo.com I have changed the mass are flow canister and the thrittle sensor im going to try replacing the fuel filter and if that dont work i going to have to take it to the shop

Without knowing more. I would guess that it is your alternator. Especially if it has been a recent thing. If you have a newer battery, it can hold enough charge that it seems ok at first, then once you really start using a lot of things the alternator can't keep up if it is old and worn out. Go to an Autozone or Advance or somewhere they can test it for you (I think they can test it without removing it now). Good Luck.