2000 Chevy Malibu
2 Answers
How long since a tune-up? Any applicable trouble codes? If it dies after a second or 2, check your security system. If you think it might be fuel, use a gage and check proper fuel pressure, 52--59 psi, so if your right in the middle, should be fine. Key on engine off. Just my opinion.
Just to add, make sure battery has a full charge and connections all good.