I was at Walmart waiting on my wife. When she came I started the car and had a beeping sound I noticed my door was not closed all the way. I drove maybe 150 feet. When I happened to look down I noticed no oil pressure. Killed it right away. Well I guess there is a sensor or something in the pan that when it hits 175lbs it shuts down the pump. If that's true I don't know but it would be nice if it shut down the motor not the pump. Or even a different tone for when it happens. Now the motor has to come out send the short block out to a machine shop and have it repaired. Lots of money this car was like new low miles. It's a 2011SS Hurst Edition same as new.

 

That doesn't make much sense,I could see maybe some sort of bypass if too much pressure and I confess I don't know the newer motors well but last I new oil pumps were run off the cam not electric.
What makes you think the motor needs rebuilt did it seize up? Was it knocking?
I've never heard of anything like this before.

 

https://ls1tech.com/forums/generatio...p-failure.html

 

Not sure where the "high pressure" thing is coming from? Oil pressure going up can indicate a spun bearing but even then there is a pressure relief valve that should not let it go over 80 PSI. It is just a spring and a valve, if pressure get high enough the valve opens and dumps oil into the pan. As the pressure drops the valve closes. This happens all the time at high RPMs. As stated above it is a mechanical pump, it can not be turned on or off. The PCM can shut down the engine but that would be considered a safety issues. GM would much rather pay to replace your motor then get sued because you lost power steering at a very bad time. On all the system I am aware of "no oil pressure" can cause a no start but not a shut down. On older cars the fuel pump would run for 5 seconds after the car started and if the oil pressure sensor did not send a signal it would just turn off the FUEL pump before you had a chance to get going. Maybe that is the confusion.

LS3 oil pump failure is common and a well known issue. Guys that run the the cars hard have been replacing them even before they fail. The problem does not exist in newer higher end pumps. Once the pump is replaced the weakness it gone. In most cases with a low RPM low load failure you just need to replace the pump. If the pump would fail at 6500 RPM then it would damage itself pretty quickly. You can drain the oil and see if it has metal in it. It will look like glitter all through the oil. You may have gotten lucky that the failure happened a low RPMs. 5 hours of labor and a $200 pump is a lot better than a 7K engine.