I have a 2011 chevy suburban that had check engine light come on and when I took it to auto zone to check the code it came back as the oil pressure switch... the only thing is the gauge didnt show low oil didnt get hot. I check oil and it was reading fine.. but as I drove it and turn the corner the oil pressure light came on. What do I need to fix??? Could it be the whole motor?

 

Could be the pressure transducer. I've had to replace one, but it was reading high, stuck on either pegged out, or 80. I don't know aht size engine you have, but the one I replaced on an 03 suburban 5.3L came with a screen that goes in underneath, you could have something like that plugged partially.

 

if it was driving then why would you throw away the motor?

Low oil isn't the only cause for low pressure. It could be a failing pump, a blockage, or it could be a failing pressure sender too. You can test the sensor with a meter. I can't remember the proper ohm reading, but I'm sure google can tell you.

 

I would first replace the pressure switch and change the oil and filter.

 

...and replace the mesh screen under the oil pressure sender/switch.