Will the oil sensor switch shut the engine down

How to Reset the Oil Life on Buick Rendezvous This should help.

The IPC illuminates the LOW OIL PRESSURE indicator in the message center when the powertrain control module (PCM) detects low engine oil pressure, and the signal circuit is low. The IPC receives a class 2 message requesting illumination message from the PCM.
No it can't shut down the engine !
No

Engine Stalling Due to Mass Air Flow/Crankshaft Position ...

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Buick LeSabre Engine Stalling Due to Mass Air Flow/Crankshaft Position Sensor Failure. This is a verified problem based on 124 reports. Learn more ... 1994 Buick LeSabre90,000Visitor ... The engine just shut down today , its like its not firing.

Change your oil sensor

Copy and paste,here's your problem,the sensor is screwed into engine by oil filter,http://www.autozone.com/autozone/parts/2004-Buick-Rainier-2WD/Oil-Pressure-Switch/_/N-jldd5Z8znc6?filterByKeyWord=oil+pressure+switch&fromString=search

all car well have a oil pressure sensor, the oil pressure sensor is what lets you know, you have good oil pressure, if light comes on low oil pressure, need to turn off engine before major engine damage occurs, the oil pressure switch will be next to the oil filter, screw into the engine block, your car also has a oil pan sensor, called oil level sensor, that one screw into the side of the oil pan, it let you know when your some what low on oil.

It is most likely a crank sensor!!!!!!! i am 99.9999% positive that this is the culprit. I am a mechanic and this is the first thing i would check with your description.

Clean battery cables and replace bolts. The cam sensor manet will not cause it to cut off.

oh thats the change oil light expect it every 3500 to 4500 miles they glow.. you can usually reset it by holding down the trip button with the car off and then turn the key to the II position where everything lights up
so read me >>>>>
Buick Rainier 2004-06, Buick Rendezvous 2002-05 w/o (DIC) Driver Information Center
Turn the ignition to ON without starting the engine. Fully press and release the accelerator pedal three time in five seconds. If the CHANGE OIL SOON’ indicator flashes two times, the system is resetting. Turn the key to OFF, then start the vehicle. If the CHANGE OIL SOON indicator comes on and stays on for five seconds, repeat the procedure.
Buick Rainier 2004-05 wI (DIC) Driver Information Center
The DIC display is located on the instrument panel cluster above the steering wheel. The DIG buttons are located on the steering wheel. Press button with the gas pump symbol to display engine oil life. Press button with the arrow symbol to reset engine oil life display.
Buick Rendezvous 2002-06 wI (DIC) Driver Information Center
To reset Service Reminder Indicator, turn ignition on with engine not running. Press the MODE button until DIC reads oil life left hold SET to reset. Press and hold the SET button until 100% is displayed. You will hear three chimes and the change oil message will go out. If the CHANGE ENGINE OIL’ message comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the procedure.

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.