I have a brand new battery, alternator, and cam shaft sensor on a 2002 trailblazer. The vehicle requires a jump daily and if the vehicle is running, and I turn the a/c on, the motor will stall and then shut down.

run fault codes and check foe crank/cam shaft position sensor problems
voltage is good ( 14.5-14.8 max)

Keeping it short and simple. Check your battery voltage, looking for about 12.4 vdc with the vehicle not running, about 14.3 vdc with the engine running. It sounds like you may have a bad alternator. Depending on what your voltage readings are will determine what's going on. Do you have to jump the battery to start it again? If you jump it and can start it. Then take the jumper cables off and can't start it then your battery is bad because it won't hold a charge. If you can start it without a jump and it just dies that would most probably be an alternator. Keep it simple to start, first battery then alternator. Beyond that you may have a way bigger electrical issue.

have it checked for cam shaft sensor

what exactly is the question ?

If your battery charge light is on and your car is dying after u have already have it running u need a new alternator. If it stays running after started but it will not start again unless jumped you need a new battery.

it is the sensor that is being pointed at in the cylinder head

Oil pressure switch is bad.

no each one has its own job,
crank sensor is counting crank shaft rpms
cam sensor is counting cam shaft rpms
is there any lights coming on just as this is happening?
i think you should have the fuel pressure checked when it dies out,you need at least 50psi at fuel rail

I replaced the Cam Shaft Sensor. I also cleaned the Throttle Body with carb cleaner. I had my wife hold down the accelerator, while running I sprayed down the throttle plate and the entire area around it. Now my TB finally idles smoothly, and it hasn't died yet!! Check engine light is gone and I passed the emissions test!! Yea!!!