Question about 2007 GMC Yukon

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2001 gmc yukon starts then chokes out

Seems like an air or fuel problem

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  • GIVHRR May 11, 2010

    is the security light flashing when it starts and stalls?

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Knock Sensors under the intake manifold. There are 2. Replace both, it takes 3 or four hours to pull apart the manifold and re-install. All fuel lines have to be disconnected and needs a special tool. While you have the intake off, spray 3 or 4 cans of throttle body cleaner thru the plastic manifold. The parts only take ten minutes to replace, once you get to them. Make sure you use good 100% silicone on the new ones so it does not happen again. Once you get it back together, it will run like a champ. Hope this helps

Posted on Jul 06, 2009

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Posted on Jan 02, 2017

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1 Answer

2001 gmc yukon gets no fuel while driving and shuts down


Check your fuel pressure it should be 50-55 psi.Sounds like the fuel pump is to weak.

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Start with the simple and replace the fuel filter. The fuel filter may have reached the end of it's life time and is dirty causing the issues you have. The worst is the fuel pump it self has gone bad and needs to be replaced, the fuel pump should be producing 62 to 65 PSI when the engine is started and should drop no more then 5 PSI when the engine is running. You can check the fuel pressure at the shredder valve with a fuel pressure gauge. Good luck and keep me posted, be glad to help get your Yukon running 100% again.

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Oct 08, 2009 | 2001 GMC Yukon XL

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1 Answer

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Try turning key to on only, not start, 2 or 3 times first then try to start. If it starts good first try, then I'd change my fuel filter & then have fuel pressure tested if fuel filter didn't help. You may be looking at a new pump, but lets do filter & test fuel pressure first.

Jul 06, 2009 | 2001 GMC Yukon XL

1 Answer

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