Question about 1999 GMC Yukon

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Ihave 1999 gmc yukon 5.7 vortex when starting crank up run then cut off what could be problem

Getting good fuel pressure and fire to plugs

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  • Master
  • 603 Answers

This problem you are having sounds like a crankshaft sensor going bad. Do you have a check engine light on, in your dash? Have your computer scanned, and cars computer will tell you what the problem is. GOOD LUCK FRIEND.

Posted on Dec 01, 2014

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  • GMC Master
  • 808 Answers

Well is the fuel pressure maintained after shut down it could be a anti-theft issue known as starts runs and dies with a factory style scanner on data screen shows gas enable yes/no or theft on/off theses are related to the ignition system watching the security light if blinking while running or after dies may indicate a broken wire in steering column.

Posted on Dec 03, 2014

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Posted on Jan 02, 2017

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SOURCE: 1999 chevy blazer fuel problem

probably not fuel filter . probably going to have to remove the upper intake and replace the fuel injector spider(fuel inj assebly) if it is droping fuel pressure it is leaking into the upper manifold

Posted on Nov 30, 2008

honeymokey
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SOURCE: My 1999 GMC Sierra wont start. It has the 5.3l V8

Sounds like a security problem that is preventing starting. It will run for a few seconds and then die.

Posted on Jun 09, 2009

  • 53 Answers

SOURCE: I have an 2001 Yukon 5.3 liter and about to do

IF U HAVE A BAD FUEL PUMP OR A FUEL
FILTER BUT THE FUEL PUMP BAD BECAUSE OF THE FILTER MORE THAN LIKELY SO I WOULD REPLACE BOTH IF THE PRESSURE IS NOT BETWEEN 45 PSI AND 55 PSI. GOOD LUCK CHEAPEST PLACE FOR A PUMP AND FILTER IS ADVANCE AUTO PARTS JUST REPLACED THE ONE IN MY TAHOE.

Posted on Sep 02, 2009

  • 1509 Answers

SOURCE: OK i have a 1999 gmc Yukon i just changed the fuel

I suppose that you mean it starts but doesn't continue to run. And if you try to start it right away it'll just crank. The fuel pump is on in crank but not in run ( maybe ). Find the fuel pump relay in the underhood fuse relay panel and use a test light to cheak the pins for power and ground. First with the test light hooked to a good ground, check to see if it works first ( touch the battery positive ) then touch all the pins of the relay ( removed ) One should be hot all the time ( if not the fuel pump fuse is blown) another should be hot with the key on. one of the others will be hot only in crank ( this is the fuel pump) The last other is ground with the engine running after started. The one thats hot in crank put power to it with a jumper wire and start the engine ( it'll run ) the fuel pump also gets turned on by the oil pressure switch and the fuel pump fuse is blown it'll also not run the engine. But it'll run right after it's cranked and quit

Posted on Nov 16, 2009

  • 2 Answers

SOURCE: 1996 s10 pickup 4.3 vortex . I have goog fuel

replcace filter? ,you say you have good pressure.have you checked your pressure with a guage? i had pressure but not enuff,really 96 4.3 vortex needs to be pretty high(check requierments at parts store) fuel pump is in the tank, cheapest one @ 235.00

Posted on Dec 18, 2010

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1 Answer

What runs the daytime lights, dash warning lights, and fuel pump. these seem to be the factors of why my truck only cranks but doesnt start.


Check all fuses and relay fuses. Then "crack" the fuel line to the injectors and crank to see if fuel is present. If fuel pressure is present, check for spark (Ensure no spilt fuel is around) by cranking with plug lead shorted off the spark plug.

May 21, 2014 | 1999 GMC Yukon

1 Answer

I have a 1999 yukon Denali and it won't start. I had a diagnostic done on it and the mechanic said the code was p0135. He went on to say it was the crank position sensor. So I replaced it however it still...


The code you are talking about is not likely to keep the truck from starting. Is the truck turning over , getting fire to the plugs, fuel to the throttle body and injectors. P0135- Oxy Sensor Heater Circ (bank1, Sensor. Does the fuel pump run and is the fuel filter clear and not blocked. Can you spray fuel into the throttle body and get it to start. If the guy charged you $900 to change a sensor I would fire his but.

May 28, 2017 | 1999 GMC Yukon Denali

1 Answer

My 2004 yukon xl wont start


You need spark at the right time, fuel pressure at the injectors, and normal compression.
Have the spark plugs been changed in the past couple of years ?
Have you checked the fuel pressure to see if it is enough ?
Have you sprayed carb cleaner into the throttle body to try to make the engine try to start ?
Does it sound like it has normal compression when cranking ?

Feb 09, 2013 | 2002 GMC Yukon XL

1 Answer

I have a 1999 GMC Yukon getting fuel, spark and even cranking good at times. Then if I turn it off for a while, I have to squirt a shot of starting fluid into the intake hole and it cranks over & over...


If you have to spray fluid into it then it sounds like the fuel presseure is not there, get a fuel pressure gauge and see what the pressure reading is, then leave it hooked up for what ever time it takes to not start, before you try to start it check the pressure, if it has dropped then your fuel injector/s or fuel regulator is leaking, crank the engine after taking the reading, the fuel pressure should come back, 60-66 PSI, Vent the fuel tank vapors by loosening the fuel cap.Position the ignition switch and the A/C system in the off position. Install a fuel pressure gauge to the vehicles fuel pressure valve. and with the keyon, engine off verify the PSI reading on the gauge.
Anything less than 60 psi and your fuel pump is weak

Jul 28, 2011 | 1999 GMC Yukon

1 Answer

I have a 2003 yukon Problem with the GMC Yukon XL


What size engine ? 4.3 L vortex P0300 random misfire code is usually associated with vacuum leaks , but could also be low fuel pressure , plugged fuel filter , fuel pump problem , clogged injectors etc... doing fuel pressure an flow testing would confirm or eliminate that as a problem . Fuel injector balance testing would confirm or eliminate clogged injectors .

Mar 24, 2017 | 2003 GMC Yukon XL

1 Answer

Need help with my 99 gmc yukon! replaced map sensor, and idle air control module. getting gas to shaffer valve, getting spark to the spark plugs. yellow fire.


Im guessing the vehicle wont start? If so you shouldnt rule out fuel just because your getting fuel to the shrader valve, these vehicle require a certain amount of fuel pressure to run, im guessing around 60psi, so i would check fuel pressure, if ok keep in mind that these vehicles also had a problem with early failure on the fuel injectors, GM sells a new design injector set up for them.

Nov 24, 2009 | 1999 GMC Yukon

2 Answers

I have a 1999 gmc Yukon it is getting fuel and spark i even sprayed starter fluid in the intake but it still wont start it turns over good but wont start


ok make sure you have good fuel pressure
you must have good spark must fire a spark tester
if all that is good then check compression
and don't use STARTER FLUID on a GAS ENGINE it can blow a hole through the piston
hope this helps

Nov 12, 2009 | 1999 GMC Yukon

1 Answer

My GMC yukon XL 2001 engine runs after 4 times of cranking.


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

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