I have been having problems with my 2009 Chevy Silverado check engine light keeps coming on saying I'm having low oil pressure. They changed out my oil pressure sensor and also replaced the oil pump. My check engine light keeps coming on. Anyone else having this issue?

 

You can try a mechanical oil pressure gauge to verify if the oil pressure is actually low. How many miles are on the truck? Has regular oil changes been done on the truck? When the new sensor was installed, was the screen cleaned or changed?