This could be a bad sensor or you may have lost actual oil pressure in the engine.
How often does this happen?
Does the oil pressure stay low or does it come back to normal wile driving?
Does the engine make any abnormal noise when this happens?
I'm hoping for a bad sensor. It happens as I drive and then returns to normal pressure. There is no unusual noises and the temp remains the same. The oil is good since I just took it to GM today and had it changed.
It do not always say stop engine oil pressure is low but every now and then it does.
it happens evry so often driving about thirty minutes to work maybe three times at the most. Drops to 0 and slowly climbs back up to 80. rarely stay on 40 or anything else.