When coming to a stop the motor shuts down. to take off again you have to put it in neutral to restart. it then takes 2 or more tries to keep it going once you shift to drive.

IDLE Sentsor

Try doing the following.

Engine stalling issue at low speeds

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

It sounds like your alternator might be starting to go bad and the Battery Light is coming on because it is not charging the battery correctly. Have your Alternator checked with a volt meter, it should be reading 13 to 14 volts if working correctly. If not, replace your alternator.

it sounds like you have fuel starvation. try cleaning out your carbourator

It keeps burning out blower resistors because of the blower motor drawing to much amperage so you will need to replace the resistor and blower motor

Does it shut off completely? How long does it take before it will restart?
Does this only happen when the engine is hot?
Has this problem gotten worse from a previous problem?
Do you always allow the fuel to get very low like below 1/8th of a tank?
Does it normally run well?
Better hot than cold or better cold than hot?

I had the same issue with another GM and never got it resolved except by replacing the battery.
Finally put it one that keeps good voltage while park or running.
Wall mart sells a $20 alternator and battery checking device you plug into a power socket.
Its digital read out is better for my eyes than the dash board one and has idiot color codes red yellow and green,

Some batteries seem to get shorted cells and that lower voltage can lead to engine shutdown even while driving. You would think a good alternator would keep the engine running but these new low rpm designs with heavy load...

This is all experience and I do not claim to be a GM tech.

MY 2002 RAINIER DOES THE SAME THING I HAVE BEEN TOLD IT IS THE THROTTLE BODY. I NEED TO CLEAN IT OR REPLACE IT. I HAVE THE 4.2 AND YOU CAN GET ONE FOR $200 PLUS SHIPPING. THE THROTTLE BODY STARVES THE CAR FOR AIR CAUSING THE IDLE, AND SHUT DOWN PROBLEMS. I AM GOING TO TRY IT THIS WEEKEND.

Check the O2 sensor wiring just above the right axle, sometimes it comes loose and rubs on the axle.