Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello My name is*****'ll see if I can help.
Have you checked it for any codes yet? It sounds like you likely have a high pressure pump issue or a fuel pressure regulator type issue. the other possibility is bad fuel. Though it sounds like you likely know enough that it is preob not poor fuel. here is an issue I have seen from time to time cause situations like yours.