Will not stay running, shuts off immediately

Tiny
JARVIS FLUELLYN
  • MEMBER
  • 1997 GMC YUKON
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 238,000 MILES
I crank the SUV up, it starts then immediately cuts off. I have changed the fuel filter and added gas and still will not crank, What do I do now?
Thursday, May 23rd, 2019 AT 7:28 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome to 2CarPros.

If it starts then shuts off, have you checked to see if the fuel pressure is within the manufacturer's specs? Also, have you checked to see if spark is lost to the spark plugs?

I am going to provide two different links. One explains how to check fuel pressure and the other spark.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Also, make sure the security light isn't staying on.

Let me know what you find or if you have other questions.

Joe

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Thursday, May 23rd, 2019 AT 5:50 PM

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