Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
which motor? how many miles?
likely the oil pump is getting weak.. I would manually thread in a hand held gauge before cracking the motor open... its generally one of 3 thing oil pump or internal issue, gauge issue or oil pressure switch failure...start with a oil pressure check with a hand held gauge threaded into the port in the motor
change the oil pressure switch that's at it without buying a oil pressure gauge